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f8deab8522
delve/service/dap/server_test.go
Suzy Mueller f8deab8522
service/dap: fix goroutine id selection for hardcoded breakpoints (#2748) 
* service/dap: fix goroutine id selection for hardcoded breakpoints

Determining the stopped goroutine id on a breakpoint required
checking for breakpoints since some may be tracepoints. However,
there may be goroutines stopped on hardcoded breakpoints with
no breakpoint. We fix this by checking for runtime.breakpoint or
StopReason=proc.StopHardcodedBreakpoint.
2021-10-29 19:40:16 -07:00

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package dap
import (
"bufio"
"flag"
"fmt"
"io"
"io/ioutil"
"math/rand"
"net"
"os"
"os/exec"
"path/filepath"
"reflect"
"regexp"
"runtime"
"strconv"
"strings"
"testing"
"time"
"github.com/go-delve/delve/pkg/goversion"
"github.com/go-delve/delve/pkg/logflags"
"github.com/go-delve/delve/pkg/proc"
protest "github.com/go-delve/delve/pkg/proc/test"
"github.com/go-delve/delve/service"
"github.com/go-delve/delve/service/api"
"github.com/go-delve/delve/service/dap/daptest"
"github.com/go-delve/delve/service/debugger"
"github.com/google/go-dap"
)
const stopOnEntry bool = true
const hasChildren bool = true
const noChildren bool = false
const localsScope = 1000
const globalsScope = 1001
var testBackend string
func TestMain(m *testing.M) {
logOutputVal := ""
if _, isTeamCityTest := os.LookupEnv("TEAMCITY_VERSION"); isTeamCityTest {
logOutputVal = "debugger,dap"
}
var logOutput string
flag.StringVar(&logOutput, "log-output", logOutputVal, "configures log output")
flag.Parse()
logflags.Setup(logOutput != "", logOutput, "")
protest.DefaultTestBackend(&testBackend)
os.Exit(protest.RunTestsWithFixtures(m))
}
// name is for _fixtures/<name>.go
func runTest(t *testing.T, name string, test func(c *daptest.Client, f protest.Fixture)) {
runTestBuildFlags(t, name, test, protest.AllNonOptimized)
}
// name is for _fixtures/<name>.go
func runTestBuildFlags(t *testing.T, name string, test func(c *daptest.Client, f protest.Fixture), buildFlags protest.BuildFlags) {
fixture := protest.BuildFixture(name, buildFlags)
// Start the DAP server.
serverStopped := make(chan struct{})
client := startDAPServerWithClient(t, serverStopped)
defer client.Close()
test(client, fixture)
<-serverStopped
}
func startDAPServerWithClient(t *testing.T, serverStopped chan struct{}) *daptest.Client {
server, _ := startDAPServer(t, serverStopped)
client := daptest.NewClient(server.config.Listener.Addr().String())
return client
}
func startDAPServer(t *testing.T, serverStopped chan struct{}) (server *Server, forceStop chan struct{}) {
// Start the DAP server.
listener, err := net.Listen("tcp", ":0")
if err != nil {
t.Fatal(err)
}
disconnectChan := make(chan struct{})
server = NewServer(&service.Config{
Listener: listener,
DisconnectChan: disconnectChan,
})
server.Run()
// Give server time to start listening for clients
time.Sleep(100 * time.Millisecond)
// Run a goroutine that stops the server when disconnectChan is signaled.
// This helps us test that certain events cause the server to stop as
// expected.
forceStop = make(chan struct{})
go func() {
defer func() {
if serverStopped != nil {
close(serverStopped)
}
}()
select {
case <-disconnectChan: // Stop triggered internally
case <-forceStop: // Stop triggered externally
}
server.Stop()
}()
return server, forceStop
}
func verifyServerStopped(t *testing.T, server *Server) {
t.Helper()
if server.listener != nil {
if server.listener.Close() == nil {
t.Error("server should have closed listener after shutdown")
}
}
verifySessionStopped(t, server.session)
}
func verifySessionStopped(t *testing.T, session *Session) {
t.Helper()
if session == nil {
return
}
if session.conn == nil {
t.Error("session must always have a set connection")
}
verifyConnStopped(t, session.conn)
if session.debugger != nil {
t.Error("session should have no pointer to debugger after shutdown")
}
if session.binaryToRemove != "" {
t.Error("session should have no binary to remove after shutdown")
}
}
func verifyConnStopped(t *testing.T, conn io.ReadWriteCloser) {
t.Helper()
if conn.Close() == nil {
t.Error("client connection should be closed after shutdown")
}
}
func TestStopNoClient(t *testing.T) {
for name, triggerStop := range map[string]func(s *Server, forceStop chan struct{}){
"force": func(s *Server, forceStop chan struct{}) { close(forceStop) },
"accept error": func(s *Server, forceStop chan struct{}) { s.config.Listener.Close() },
} {
t.Run(name, func(t *testing.T) {
serverStopped := make(chan struct{})
server, forceStop := startDAPServer(t, serverStopped)
triggerStop(server, forceStop)
<-serverStopped
verifyServerStopped(t, server)
})
}
}
func TestStopNoTarget(t *testing.T) {
for name, triggerStop := range map[string]func(c *daptest.Client, forceStop chan struct{}){
"force": func(c *daptest.Client, forceStop chan struct{}) { close(forceStop) },
"read error": func(c *daptest.Client, forceStop chan struct{}) { c.Close() },
"disconnect": func(c *daptest.Client, forceStop chan struct{}) { c.DisconnectRequest() },
} {
t.Run(name, func(t *testing.T) {
serverStopped := make(chan struct{})
server, forceStop := startDAPServer(t, serverStopped)
client := daptest.NewClient(server.config.Listener.Addr().String())
defer client.Close()
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
triggerStop(client, forceStop)
<-serverStopped
verifyServerStopped(t, server)
})
}
}
func TestStopWithTarget(t *testing.T) {
for name, triggerStop := range map[string]func(c *daptest.Client, forceStop chan struct{}){
"force": func(c *daptest.Client, forceStop chan struct{}) { close(forceStop) },
"read error": func(c *daptest.Client, forceStop chan struct{}) { c.Close() },
"disconnect before exit": func(c *daptest.Client, forceStop chan struct{}) { c.DisconnectRequest() },
"disconnect after exit": func(c *daptest.Client, forceStop chan struct{}) {
c.ContinueRequest(1)
c.ExpectContinueResponse(t)
c.ExpectTerminatedEvent(t)
c.DisconnectRequest()
},
} {
t.Run(name, func(t *testing.T) {
serverStopped := make(chan struct{})
server, forceStop := startDAPServer(t, serverStopped)
client := daptest.NewClient(server.config.Listener.Addr().String())
defer client.Close()
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
fixture := protest.BuildFixture("increment", protest.AllNonOptimized)
client.LaunchRequest("debug", fixture.Source, stopOnEntry)
client.ExpectInitializedEvent(t)
client.ExpectLaunchResponse(t)
triggerStop(client, forceStop)
<-serverStopped
verifyServerStopped(t, server)
})
}
}
func TestSessionStop(t *testing.T) {
verifySessionState := func(t *testing.T, s *Session, binaryToRemoveSet bool, debuggerSet bool, disconnectChanSet bool) {
t.Helper()
if binaryToRemoveSet && s.binaryToRemove == "" || !binaryToRemoveSet && s.binaryToRemove != "" {
t.Errorf("binaryToRemove: got %s, want set=%v", s.binaryToRemove, binaryToRemoveSet)
}
if debuggerSet && s.debugger == nil || !debuggerSet && s.debugger != nil {
t.Errorf("debugger: got %v, want set=%v", s.debugger, debuggerSet)
}
if disconnectChanSet && s.config.DisconnectChan == nil || !disconnectChanSet && s.config.DisconnectChan != nil {
t.Errorf("disconnectChan: got %v, want set=%v", s.config.DisconnectChan, disconnectChanSet)
}
}
for name, stopSession := range map[string]func(s *Session, c *daptest.Client, serveDone chan struct{}){
"force": func(s *Session, c *daptest.Client, serveDone chan struct{}) {
s.Close()
<-serveDone
verifySessionState(t, s, false /*binaryToRemoveSet*/, false /*debuggerSet*/, false /*disconnectChanSet*/)
},
"read error": func(s *Session, c *daptest.Client, serveDone chan struct{}) {
c.Close()
<-serveDone
verifyConnStopped(t, s.conn)
verifySessionState(t, s, true /*binaryToRemoveSet*/, true /*debuggerSet*/, false /*disconnectChanSet*/)
s.Close()
},
"disconnect before exit": func(s *Session, c *daptest.Client, serveDone chan struct{}) {
c.DisconnectRequest()
<-serveDone
verifyConnStopped(t, s.conn)
verifySessionState(t, s, true /*binaryToRemoveSet*/, false /*debuggerSet*/, false /*disconnectChanSet*/)
s.Close()
},
"disconnect after exit": func(s *Session, c *daptest.Client, serveDone chan struct{}) {
c.ContinueRequest(1)
c.ExpectContinueResponse(t)
c.ExpectTerminatedEvent(t)
c.DisconnectRequest()
<-serveDone
verifyConnStopped(t, s.conn)
verifySessionState(t, s, true /*binaryToRemoveSet*/, false /*debuggerSet*/, false /*disconnectChanSet*/)
s.Close()
},
} {
t.Run(name, func(t *testing.T) {
listener, err := net.Listen("tcp", ":0")
if err != nil {
t.Fatalf("cannot setup listener required for testing: %v", err)
}
defer listener.Close()
acceptDone := make(chan struct{})
var conn net.Conn
go func() {
conn, err = listener.Accept()
close(acceptDone)
}()
time.Sleep(10 * time.Millisecond) // give time to start listening
client := daptest.NewClient(listener.Addr().String())
defer client.Close()
<-acceptDone
if err != nil {
t.Fatalf("cannot accept client requireed for testing: %v", err)
}
session := NewSession(conn, &Config{
Config: &service.Config{DisconnectChan: make(chan struct{})},
StopTriggered: make(chan struct{})}, nil)
serveDAPCodecDone := make(chan struct{})
go func() {
session.ServeDAPCodec()
close(serveDAPCodecDone)
}()
time.Sleep(10 * time.Millisecond) // give time to start reading
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
fixture := protest.BuildFixture("increment", protest.AllNonOptimized)
client.LaunchRequest("debug", fixture.Source, stopOnEntry)
client.ExpectInitializedEvent(t)
client.ExpectLaunchResponse(t)
stopSession(session, client, serveDAPCodecDone)
verifySessionStopped(t, session)
})
}
}
func TestForceStopWhileStopping(t *testing.T) {
serverStopped := make(chan struct{})
server, forceStop := startDAPServer(t, serverStopped)
client := daptest.NewClient(server.config.Listener.Addr().String())
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
fixture := protest.BuildFixture("increment", protest.AllNonOptimized)
client.LaunchRequest("exec", fixture.Path, stopOnEntry)
client.ExpectInitializedEvent(t)
client.Close() // depending on timing may trigger Stop()
time.Sleep(time.Microsecond)
close(forceStop) // depending on timing may trigger Stop()
<-serverStopped
verifyServerStopped(t, server)
}
// TestLaunchStopOnEntry emulates the message exchange that can be observed with
// VS Code for the most basic launch debug session with "stopOnEntry" enabled:
// - User selects "Start Debugging": 1 >> initialize
// : 1 << initialize
// : 2 >> launch
// : << initialized event
// : 2 << launch
// : 3 >> setBreakpoints (empty)
// : 3 << setBreakpoints
// : 4 >> setExceptionBreakpoints (empty)
// : 4 << setExceptionBreakpoints
// : 5 >> configurationDone
// - Program stops upon launching : << stopped event
// : 5 << configurationDone
// : 6 >> threads
// : 6 << threads (Dummy)
// : 7 >> threads
// : 7 << threads (Dummy)
// : 8 >> stackTrace
// : 8 << error (Unable to produce stack trace)
// : 9 >> stackTrace
// : 9 << error (Unable to produce stack trace)
// - User evaluates bad expression : 10 >> evaluate
// : 10 << error (unable to find function context)
// - User evaluates good expression: 11 >> evaluate
// : 11 << evaluate
// - User selects "Continue" : 12 >> continue
// : 12 << continue
// - Program runs to completion : << terminated event
// : 13 >> disconnect
// : << output event (Process exited)
// : << output event (Detaching)
// : 13 << disconnect
// This test exhaustively tests Seq and RequestSeq on all messages from the
// server. Other tests do not necessarily need to repeat all these checks.
func TestLaunchStopOnEntry(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
// 1 >> initialize, << initialize
client.InitializeRequest()
initResp := client.ExpectInitializeResponseAndCapabilities(t)
if initResp.Seq != 0 || initResp.RequestSeq != 1 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=1", initResp)
}
// 2 >> launch, << initialized, << launch
client.LaunchRequest("exec", fixture.Path, stopOnEntry)
initEvent := client.ExpectInitializedEvent(t)
if initEvent.Seq != 0 {
t.Errorf("\ngot %#v\nwant Seq=0", initEvent)
}
launchResp := client.ExpectLaunchResponse(t)
if launchResp.Seq != 0 || launchResp.RequestSeq != 2 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=2", launchResp)
}
// 3 >> setBreakpoints, << setBreakpoints
client.SetBreakpointsRequest(fixture.Source, nil)
sbpResp := client.ExpectSetBreakpointsResponse(t)
if sbpResp.Seq != 0 || sbpResp.RequestSeq != 3 || len(sbpResp.Body.Breakpoints) != 0 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=3, len(Breakpoints)=0", sbpResp)
}
// 4 >> setExceptionBreakpoints, << setExceptionBreakpoints
client.SetExceptionBreakpointsRequest()
sebpResp := client.ExpectSetExceptionBreakpointsResponse(t)
if sebpResp.Seq != 0 || sebpResp.RequestSeq != 4 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=4", sebpResp)
}
// 5 >> configurationDone, << stopped, << configurationDone
client.ConfigurationDoneRequest()
stopEvent := client.ExpectStoppedEvent(t)
if stopEvent.Seq != 0 ||
stopEvent.Body.Reason != "entry" ||
stopEvent.Body.ThreadId != 1 ||
!stopEvent.Body.AllThreadsStopped {
t.Errorf("\ngot %#v\nwant Seq=0, Body={Reason=\"entry\", ThreadId=1, AllThreadsStopped=true}", stopEvent)
}
cdResp := client.ExpectConfigurationDoneResponse(t)
if cdResp.Seq != 0 || cdResp.RequestSeq != 5 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=5", cdResp)
}
// 6 >> threads, << threads
client.ThreadsRequest()
tResp := client.ExpectThreadsResponse(t)
if tResp.Seq != 0 || tResp.RequestSeq != 6 || len(tResp.Body.Threads) != 1 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=6 len(Threads)=1", tResp)
}
if tResp.Body.Threads[0].Id != 1 || tResp.Body.Threads[0].Name != "Dummy" {
t.Errorf("\ngot %#v\nwant Id=1, Name=\"Dummy\"", tResp)
}
// 7 >> threads, << threads
client.ThreadsRequest()
tResp = client.ExpectThreadsResponse(t)
if tResp.Seq != 0 || tResp.RequestSeq != 7 || len(tResp.Body.Threads) != 1 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=7 len(Threads)=1", tResp)
}
// 8 >> stackTrace, << error
client.StackTraceRequest(1, 0, 20)
stResp := client.ExpectInvisibleErrorResponse(t)
if stResp.Seq != 0 || stResp.RequestSeq != 8 || stResp.Body.Error.Format != "Unable to produce stack trace: unknown goroutine 1" {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=8 Format=\"Unable to produce stack trace: unknown goroutine 1\"", stResp)
}
// 9 >> stackTrace, << error
client.StackTraceRequest(1, 0, 20)
stResp = client.ExpectInvisibleErrorResponse(t)
if stResp.Seq != 0 || stResp.RequestSeq != 9 || stResp.Body.Error.Id != UnableToProduceStackTrace {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=9 Id=%d", stResp, UnableToProduceStackTrace)
}
// 10 >> evaluate, << error
client.EvaluateRequest("foo", 0 /*no frame specified*/, "repl")
erResp := client.ExpectInvisibleErrorResponse(t)
if erResp.Seq != 0 || erResp.RequestSeq != 10 || erResp.Body.Error.Id != UnableToEvaluateExpression {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=10 Id=%d", erResp, UnableToEvaluateExpression)
}
// 11 >> evaluate, << evaluate
client.EvaluateRequest("1+1", 0 /*no frame specified*/, "repl")
evResp := client.ExpectEvaluateResponse(t)
if evResp.Seq != 0 || evResp.RequestSeq != 11 || evResp.Body.Result != "2" {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=10 Result=2", evResp)
}
// 12 >> continue, << continue, << terminated
client.ContinueRequest(1)
contResp := client.ExpectContinueResponse(t)
if contResp.Seq != 0 || contResp.RequestSeq != 12 || !contResp.Body.AllThreadsContinued {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=12 Body.AllThreadsContinued=true", contResp)
}
termEvent := client.ExpectTerminatedEvent(t)
if termEvent.Seq != 0 {
t.Errorf("\ngot %#v\nwant Seq=0", termEvent)
}
// 13 >> disconnect, << disconnect
client.DisconnectRequest()
oep := client.ExpectOutputEventProcessExited(t, 0)
if oep.Seq != 0 || oep.Body.Category != "console" {
t.Errorf("\ngot %#v\nwant Seq=0 Category='console'", oep)
}
oed := client.ExpectOutputEventDetaching(t)
if oed.Seq != 0 || oed.Body.Category != "console" {
t.Errorf("\ngot %#v\nwant Seq=0 Category='console'", oed)
}
dResp := client.ExpectDisconnectResponse(t)
if dResp.Seq != 0 || dResp.RequestSeq != 13 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=13", dResp)
}
client.ExpectTerminatedEvent(t)
})
}
// TestAttachStopOnEntry is like TestLaunchStopOnEntry, but with attach request.
func TestAttachStopOnEntry(t *testing.T) {
if runtime.GOOS == "freebsd" {
t.SkipNow()
}
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
// Start the program to attach to
cmd := exec.Command(fixture.Path)
stdout, err := cmd.StdoutPipe()
if err != nil {
t.Fatal(err)
}
cmd.Stderr = os.Stderr
if err := cmd.Start(); err != nil {
t.Fatal(err)
}
// Wait for output.
// This will give the target process time to initialize the runtime before we attach,
// so we can rely on having goroutines when they are requested on attach.
scanOut := bufio.NewScanner(stdout)
scanOut.Scan()
if scanOut.Text() != "past main" {
t.Errorf("expected loopprog.go to output \"past main\"")
}
// 1 >> initialize, << initialize
client.InitializeRequest()
initResp := client.ExpectInitializeResponseAndCapabilities(t)
if initResp.Seq != 0 || initResp.RequestSeq != 1 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=1", initResp)
}
// 2 >> attach, << initialized, << attach
client.AttachRequest(
map[string]interface{}{"mode": "local", "processId": cmd.Process.Pid, "stopOnEntry": true, "backend": "default"})
initEvent := client.ExpectInitializedEvent(t)
if initEvent.Seq != 0 {
t.Errorf("\ngot %#v\nwant Seq=0", initEvent)
}
attachResp := client.ExpectAttachResponse(t)
if attachResp.Seq != 0 || attachResp.RequestSeq != 2 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=2", attachResp)
}
// 3 >> setBreakpoints, << setBreakpoints
client.SetBreakpointsRequest(fixture.Source, nil)
sbpResp := client.ExpectSetBreakpointsResponse(t)
if sbpResp.Seq != 0 || sbpResp.RequestSeq != 3 || len(sbpResp.Body.Breakpoints) != 0 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=3, len(Breakpoints)=0", sbpResp)
}
// 4 >> setExceptionBreakpoints, << setExceptionBreakpoints
client.SetExceptionBreakpointsRequest()
sebpResp := client.ExpectSetExceptionBreakpointsResponse(t)
if sebpResp.Seq != 0 || sebpResp.RequestSeq != 4 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=4", sebpResp)
}
// 5 >> configurationDone, << stopped, << configurationDone
client.ConfigurationDoneRequest()
stopEvent := client.ExpectStoppedEvent(t)
if stopEvent.Seq != 0 ||
stopEvent.Body.Reason != "entry" ||
stopEvent.Body.ThreadId != 1 ||
!stopEvent.Body.AllThreadsStopped {
t.Errorf("\ngot %#v\nwant Seq=0, Body={Reason=\"entry\", ThreadId=1, AllThreadsStopped=true}", stopEvent)
}
cdResp := client.ExpectConfigurationDoneResponse(t)
if cdResp.Seq != 0 || cdResp.RequestSeq != 5 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=5", cdResp)
}
// 6 >> threads, << threads
client.ThreadsRequest()
tResp := client.ExpectThreadsResponse(t)
// Expect main goroutine plus runtime at this point.
if tResp.Seq != 0 || tResp.RequestSeq != 6 || len(tResp.Body.Threads) < 2 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=6 len(Threads)>1", tResp)
}
// 7 >> threads, << threads
client.ThreadsRequest()
client.ExpectThreadsResponse(t)
// 8 >> stackTrace, << response
client.StackTraceRequest(1, 0, 20)
client.ExpectStackTraceResponse(t)
// 9 >> stackTrace, << response
client.StackTraceRequest(1, 0, 20)
client.ExpectStackTraceResponse(t)
// 10 >> evaluate, << error
client.EvaluateRequest("foo", 0 /*no frame specified*/, "repl")
erResp := client.ExpectInvisibleErrorResponse(t)
if erResp.Seq != 0 || erResp.RequestSeq != 10 || erResp.Body.Error.Id != UnableToEvaluateExpression {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=10 Id=%d", erResp, UnableToEvaluateExpression)
}
// 11 >> evaluate, << evaluate
client.EvaluateRequest("1+1", 0 /*no frame specified*/, "repl")
evResp := client.ExpectEvaluateResponse(t)
if evResp.Seq != 0 || evResp.RequestSeq != 11 || evResp.Body.Result != "2" {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=10 Result=2", evResp)
}
// 12 >> continue, << continue
client.ContinueRequest(1)
cResp := client.ExpectContinueResponse(t)
if cResp.Seq != 0 || cResp.RequestSeq != 12 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=12", cResp)
}
// TODO(polina): once https://github.com/go-delve/delve/issues/2259 is
// fixed, test with kill=false.
// 13 >> disconnect, << disconnect
client.DisconnectRequestWithKillOption(true)
// Disconnect consists of Halt + Detach.
// Halt interrupts command in progress, which triggers
// a stopped event in parallel with the disconnect
// sequence. It might arrive before or during the sequence
// or never if the server exits before it is sent.
msg := expectMessageFilterStopped(t, client)
client.CheckOutputEvent(t, msg)
msg = expectMessageFilterStopped(t, client)
client.CheckDisconnectResponse(t, msg)
client.ExpectTerminatedEvent(t)
// If this call to KeepAlive isn't here there's a chance that stdout will
// be garbage collected (since it is no longer alive long before this
// point), when that happens, on unix-like OSes, the read end of the pipe
// will be closed by the finalizer and the target process will die by
// SIGPIPE, which the rest of this test does not expect.
runtime.KeepAlive(stdout)
})
}
// Like the test above, except the program is configured to continue on entry.
func TestContinueOnEntry(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
// 1 >> initialize, << initialize
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
// 2 >> launch, << initialized, << launch
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
client.ExpectInitializedEvent(t)
client.ExpectLaunchResponse(t)
// 3 >> setBreakpoints, << setBreakpoints
client.SetBreakpointsRequest(fixture.Source, nil)
client.ExpectSetBreakpointsResponse(t)
// 4 >> setExceptionBreakpoints, << setExceptionBreakpoints
client.SetExceptionBreakpointsRequest()
client.ExpectSetExceptionBreakpointsResponse(t)
// 5 >> configurationDone, << configurationDone
client.ConfigurationDoneRequest()
client.ExpectConfigurationDoneResponse(t)
// "Continue" happens behind the scenes on another goroutine
client.ExpectTerminatedEvent(t)
// 6 >> threads, << threads
client.ThreadsRequest()
tResp := client.ExpectThreadsResponse(t)
if tResp.Seq != 0 || tResp.RequestSeq != 6 || len(tResp.Body.Threads) != 1 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=6 len(Threads)=1", tResp)
}
if tResp.Body.Threads[0].Id != 1 || tResp.Body.Threads[0].Name != "Dummy" {
t.Errorf("\ngot %#v\nwant Id=1, Name=\"Dummy\"", tResp)
}
// 7 >> disconnect, << disconnect
client.DisconnectRequest()
client.ExpectOutputEventProcessExited(t, 0)
client.ExpectOutputEventDetaching(t)
dResp := client.ExpectDisconnectResponse(t)
if dResp.Seq != 0 || dResp.RequestSeq != 7 {
t.Errorf("\ngot %#v\nwant Seq=0, RequestSeq=7", dResp)
}
client.ExpectTerminatedEvent(t)
})
}
// TestPreSetBreakpoint corresponds to a debug session that is configured to
// continue on entry with a pre-set breakpoint.
func TestPreSetBreakpoint(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
client.ExpectInitializedEvent(t)
client.ExpectLaunchResponse(t)
client.SetBreakpointsRequest(fixture.Source, []int{8})
sResp := client.ExpectSetBreakpointsResponse(t)
if len(sResp.Body.Breakpoints) != 1 {
t.Errorf("got %#v, want len(Breakpoints)=1", sResp)
}
bkpt0 := sResp.Body.Breakpoints[0]
if !bkpt0.Verified || bkpt0.Line != 8 || bkpt0.Id != 1 || bkpt0.Source.Name != filepath.Base(fixture.Source) || bkpt0.Source.Path != fixture.Source {
t.Errorf("got breakpoints[0] = %#v, want Verified=true, Line=8, Id=1, Path=%q", bkpt0, fixture.Source)
}
client.SetExceptionBreakpointsRequest()
client.ExpectSetExceptionBreakpointsResponse(t)
client.ConfigurationDoneRequest()
client.ExpectConfigurationDoneResponse(t)
// This triggers "continue" on a separate goroutine
client.ThreadsRequest()
// Since we are in async mode while running, we might receive messages in either order.
for i := 0; i < 2; i++ {
msg := client.ExpectMessage(t)
switch m := msg.(type) {
case *dap.ThreadsResponse:
// If the thread request arrived while the program was running, we expect to get the dummy response
// with a single goroutine "Current".
// If the thread request arrived after the stop, we should get the goroutine stopped at main.Increment.
if (len(m.Body.Threads) != 1 || m.Body.Threads[0].Id != -1 || m.Body.Threads[0].Name != "Current") &&
(len(m.Body.Threads) < 1 || m.Body.Threads[0].Id != 1 || !strings.HasPrefix(m.Body.Threads[0].Name, "* [Go 1] main.Increment")) {
t.Errorf("\ngot %#v\nwant Id=-1, Name=\"Current\" or Id=1, Name=\"* [Go 1] main.Increment ...\"", m.Body.Threads)
}
case *dap.StoppedEvent:
if m.Body.Reason != "breakpoint" || m.Body.ThreadId != 1 || !m.Body.AllThreadsStopped {
t.Errorf("got %#v, want Body={Reason=\"breakpoint\", ThreadId=1, AllThreadsStopped=true}", m)
}
default:
t.Fatalf("got %#v, want ThreadsResponse or StoppedEvent", m)
}
}
// Threads-StackTrace-Scopes-Variables request waterfall is
// triggered on stop event.
client.ThreadsRequest()
tResp := client.ExpectThreadsResponse(t)
if len(tResp.Body.Threads) < 2 { // 1 main + runtime
t.Errorf("\ngot %#v\nwant len(Threads)>1", tResp.Body.Threads)
}
reMain, _ := regexp.Compile(`\* \[Go 1\] main.Increment \(Thread [0-9]+\)`)
wantMain := dap.Thread{Id: 1, Name: "* [Go 1] main.Increment (Thread ...)"}
wantRuntime := dap.Thread{Id: 2, Name: "[Go 2] runtime.gopark"}
for _, got := range tResp.Body.Threads {
if got.Id != 1 && !reMain.MatchString(got.Name) && !(strings.Contains(got.Name, "runtime.") || strings.Contains(got.Name, "runtime/")) {
t.Errorf("\ngot %#v\nwant []dap.Thread{%#v, %#v, ...}", tResp.Body.Threads, wantMain, wantRuntime)
}
}
client.StackTraceRequest(1, 0, 20)
stResp := client.ExpectStackTraceResponse(t)
if stResp.Body.TotalFrames != 6 {
t.Errorf("\ngot %#v\nwant TotalFrames=6", stResp.Body.TotalFrames)
}
if len(stResp.Body.StackFrames) != 6 {
t.Errorf("\ngot %#v\nwant len(StackFrames)=6", stResp.Body.StackFrames)
} else {
checkFrame := func(got dap.StackFrame, id int, name string, sourceName string, line int) {
t.Helper()
if got.Id != id || got.Name != name {
t.Errorf("\ngot %#v\nwant Id=%d Name=%s", got, id, name)
}
if (sourceName != "" && got.Source.Name != sourceName) || (line > 0 && got.Line != line) {
t.Errorf("\ngot %#v\nwant Source.Name=%s Line=%d", got, sourceName, line)
}
}
checkFrame(stResp.Body.StackFrames[0], 1000, "main.Increment", "increment.go", 8)
checkFrame(stResp.Body.StackFrames[1], 1001, "main.Increment", "increment.go", 11)
checkFrame(stResp.Body.StackFrames[2], 1002, "main.Increment", "increment.go", 11)
checkFrame(stResp.Body.StackFrames[3], 1003, "main.main", "increment.go", 17)
checkFrame(stResp.Body.StackFrames[4], 1004, "runtime.main", "proc.go", -1)
checkFrame(stResp.Body.StackFrames[5], 1005, "runtime.goexit", "", -1)
}
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
if len(scopes.Body.Scopes) > 1 {
t.Errorf("\ngot %#v\nwant len(Scopes)=1 (Locals)", scopes)
}
checkScope(t, scopes, 0, "Locals", localsScope)
client.VariablesRequest(localsScope)
args := client.ExpectVariablesResponse(t)
checkChildren(t, args, "Locals", 2)
checkVarExact(t, args, 0, "y", "y", "0 = 0x0", "uint", noChildren)
checkVarExact(t, args, 1, "~r1", "", "0 = 0x0", "uint", noChildren)
client.ContinueRequest(1)
ctResp := client.ExpectContinueResponse(t)
if !ctResp.Body.AllThreadsContinued {
t.Errorf("\ngot %#v\nwant AllThreadsContinued=true", ctResp.Body)
}
// "Continue" is triggered after the response is sent
client.ExpectTerminatedEvent(t)
// Pause request after termination should result in an error.
// But in certain cases this request actually succeeds.
client.PauseRequest(1)
switch r := client.ExpectMessage(t).(type) {
case *dap.ErrorResponse:
if r.Message != "Unable to halt execution" {
t.Errorf("\ngot %#v\nwant Message='Unable to halt execution'", r)
}
case *dap.PauseResponse:
default:
t.Fatalf("Unexpected response type: expect error or pause, got %#v", r)
}
client.DisconnectRequest()
client.ExpectOutputEventProcessExited(t, 0)
client.ExpectOutputEventDetaching(t)
client.ExpectDisconnectResponse(t)
client.ExpectTerminatedEvent(t)
})
}
// checkStackFramesExact is a helper for verifying the values within StackTraceResponse.
// wantStartName - name of the first returned frame (ignored if "")
// wantStartLine - file line of the first returned frame (ignored if <0).
// wantStartID - id of the first frame returned (ignored if wantFrames is 0).
// wantFrames - number of frames returned (length of StackTraceResponse.Body.StackFrames array).
// wantTotalFrames - total number of stack frames available (StackTraceResponse.Body.TotalFrames).
func checkStackFramesExact(t *testing.T, got *dap.StackTraceResponse,
wantStartName string, wantStartLine, wantStartID, wantFrames, wantTotalFrames int) {
t.Helper()
checkStackFramesNamed("", t, got, wantStartName, wantStartLine, wantStartID, wantFrames, wantTotalFrames, true)
}
func checkStackFramesHasMore(t *testing.T, got *dap.StackTraceResponse,
wantStartName string, wantStartLine, wantStartID, wantFrames, wantTotalFrames int) {
t.Helper()
checkStackFramesNamed("", t, got, wantStartName, wantStartLine, wantStartID, wantFrames, wantTotalFrames, false)
}
func checkStackFramesNamed(testName string, t *testing.T, got *dap.StackTraceResponse,
wantStartName string, wantStartLine, wantStartID, wantFrames, wantTotalFrames int, totalExact bool) {
t.Helper()
if totalExact && got.Body.TotalFrames != wantTotalFrames {
t.Errorf("%s\ngot %#v\nwant TotalFrames=%d", testName, got.Body.TotalFrames, wantTotalFrames)
} else if !totalExact && got.Body.TotalFrames < wantTotalFrames {
t.Errorf("%s\ngot %#v\nwant TotalFrames>=%d", testName, got.Body.TotalFrames, wantTotalFrames)
}
if len(got.Body.StackFrames) != wantFrames {
t.Errorf("%s\ngot len(StackFrames)=%d\nwant %d", testName, len(got.Body.StackFrames), wantFrames)
} else {
// Verify that frame ids are consecutive numbers starting at wantStartID
for i := 0; i < wantFrames; i++ {
if got.Body.StackFrames[i].Id != wantStartID+i {
t.Errorf("%s\ngot %#v\nwant Id=%d", testName, got.Body.StackFrames[i], wantStartID+i)
}
}
// Verify the name and line corresponding to the first returned frame (if any).
// This is useful when the first frame is the frame corresponding to the breakpoint at
// a predefined line. Line values < 0 are a signal to skip the check (which can be useful
// for frames in the third-party code, where we do not control the lines).
if wantFrames > 0 && wantStartLine > 0 && got.Body.StackFrames[0].Line != wantStartLine {
t.Errorf("%s\ngot Line=%d\nwant %d", testName, got.Body.StackFrames[0].Line, wantStartLine)
}
if wantFrames > 0 && wantStartName != "" && got.Body.StackFrames[0].Name != wantStartName {
t.Errorf("%s\ngot Name=%s\nwant %s", testName, got.Body.StackFrames[0].Name, wantStartName)
}
}
}
// checkScope is a helper for verifying the values within a ScopesResponse.
// i - index of the scope within ScopesRespose.Body.Scopes array
// name - name of the scope
// varRef - reference to retrieve variables of this scope. If varRef is negative, the reference is not checked.
func checkScope(t *testing.T, got *dap.ScopesResponse, i int, name string, varRef int) {
t.Helper()
if len(got.Body.Scopes) <= i {
t.Errorf("\ngot %d\nwant len(Scopes)>%d", len(got.Body.Scopes), i)
}
goti := got.Body.Scopes[i]
if goti.Name != name || (varRef >= 0 && goti.VariablesReference != varRef) || goti.Expensive {
t.Errorf("\ngot %#v\nwant Name=%q VariablesReference=%d Expensive=false", goti, name, varRef)
}
}
// checkChildren is a helper for verifying the number of variables within a VariablesResponse.
// parentName - pseudoname of the enclosing variable or scope (used for error message only)
// numChildren - number of variables/fields/elements of this variable
func checkChildren(t *testing.T, got *dap.VariablesResponse, parentName string, numChildren int) {
t.Helper()
if got.Body.Variables == nil {
t.Errorf("\ngot %s children=%#v want []", parentName, got.Body.Variables)
}
if len(got.Body.Variables) != numChildren {
t.Errorf("\ngot len(%s)=%d (children=%#v)\nwant len=%d", parentName, len(got.Body.Variables), got.Body.Variables, numChildren)
}
}
// checkVar is a helper for verifying the values within a VariablesResponse.
// i - index of the variable within VariablesRespose.Body.Variables array (-1 will search all vars for a match)
// name - name of the variable
// evalName - fully qualified variable name or alternative expression to load this variable
// value - the value of the variable
// useExactMatch - true if name, evalName and value are to be compared to exactly, false if to be used as regex
// hasRef - true if the variable should have children and therefore a non-0 variable reference
// ref - reference to retrieve children of this variable (0 if none)
func checkVar(t *testing.T, got *dap.VariablesResponse, i int, name, evalName, value, typ string, useExactMatch, hasRef bool, indexed, named int) (ref int) {
t.Helper()
if len(got.Body.Variables) <= i {
t.Errorf("\ngot len=%d (children=%#v)\nwant len>%d", len(got.Body.Variables), got.Body.Variables, i)
return
}
if i < 0 {
for vi, v := range got.Body.Variables {
if v.Name == name {
i = vi
break
}
}
}
if i < 0 {
t.Errorf("\ngot %#v\nwant Variables[i].Name=%q (not found)", got, name)
return 0
}
goti := got.Body.Variables[i]
matchedName := false
if useExactMatch {
if strings.HasPrefix(name, "~r") {
matchedName = strings.HasPrefix(goti.Name, "~r")
} else {
matchedName = (goti.Name == name)
}
} else {
matchedName, _ = regexp.MatchString(name, goti.Name)
}
if !matchedName || (goti.VariablesReference > 0) != hasRef {
t.Errorf("\ngot %#v\nwant Name=%q hasRef=%t", goti, name, hasRef)
}
matchedEvalName := false
if useExactMatch {
matchedEvalName = (goti.EvaluateName == evalName)
} else {
matchedEvalName, _ = regexp.MatchString(evalName, goti.EvaluateName)
}
if !matchedEvalName {
t.Errorf("\ngot %q\nwant EvaluateName=%q", goti.EvaluateName, evalName)
}
matchedValue := false
if useExactMatch {
matchedValue = (goti.Value == value)
} else {
matchedValue, _ = regexp.MatchString(value, goti.Value)
}
if !matchedValue {
t.Errorf("\ngot %s=%q\nwant %q", name, goti.Value, value)
}
matchedType := false
if useExactMatch {
matchedType = (goti.Type == typ)
} else {
matchedType, _ = regexp.MatchString(typ, goti.Type)
}
if !matchedType {
t.Errorf("\ngot %s=%q\nwant %q", name, goti.Type, typ)
}
if indexed >= 0 && goti.IndexedVariables != indexed {
t.Errorf("\ngot %s=%d indexed\nwant %d indexed", name, goti.IndexedVariables, indexed)
}
if named >= 0 && goti.NamedVariables != named {
t.Errorf("\ngot %s=%d named\nwant %d named", name, goti.NamedVariables, named)
}
return goti.VariablesReference
}
// checkVarExact is a helper like checkVar that matches value exactly.
func checkVarExact(t *testing.T, got *dap.VariablesResponse, i int, name, evalName, value, typ string, hasRef bool) (ref int) {
t.Helper()
return checkVarExactIndexed(t, got, i, name, evalName, value, typ, hasRef, -1, -1)
}
// checkVarExact is a helper like checkVar that matches value exactly.
func checkVarExactIndexed(t *testing.T, got *dap.VariablesResponse, i int, name, evalName, value, typ string, hasRef bool, indexed, named int) (ref int) {
t.Helper()
return checkVar(t, got, i, name, evalName, value, typ, true, hasRef, indexed, named)
}
// checkVarRegex is a helper like checkVar that treats value, evalName or name as a regex.
func checkVarRegex(t *testing.T, got *dap.VariablesResponse, i int, name, evalName, value, typ string, hasRef bool) (ref int) {
t.Helper()
return checkVarRegexIndexed(t, got, i, name, evalName, value, typ, hasRef, -1, -1)
}
// checkVarRegex is a helper like checkVar that treats value, evalName or name as a regex.
func checkVarRegexIndexed(t *testing.T, got *dap.VariablesResponse, i int, name, evalName, value, typ string, hasRef bool, indexed, named int) (ref int) {
t.Helper()
return checkVar(t, got, i, name, evalName, value, typ, false, hasRef, indexed, named)
}
func expectMessageFilterStopped(t *testing.T, client *daptest.Client) dap.Message {
msg := client.ExpectMessage(t)
if _, isStopped := msg.(*dap.StoppedEvent); isStopped {
msg = client.ExpectMessage(t)
}
return msg
}
// validateEvaluateName issues an evaluate request with evaluateName of a variable and
// confirms that it succeeds and returns the same variable record as the original.
func validateEvaluateName(t *testing.T, client *daptest.Client, got *dap.VariablesResponse, i int) {
t.Helper()
original := got.Body.Variables[i]
client.EvaluateRequest(original.EvaluateName, 1000, "this context will be ignored")
validated := client.ExpectEvaluateResponse(t)
if original.VariablesReference == 0 && validated.Body.VariablesReference != 0 ||
original.VariablesReference != 0 && validated.Body.VariablesReference == 0 {
t.Errorf("\ngot varref=%d\nwant %d", validated.Body.VariablesReference, original.VariablesReference)
}
// The variable might not be fully loaded, and when we reload it with an expression
// more of the subvalues might be revealed, so we must match the loaded prefix only.
if strings.Contains(original.Value, "...") {
origLoaded := strings.Split(original.Value, "...")[0]
if !strings.HasPrefix(validated.Body.Result, origLoaded) {
t.Errorf("\ngot value=%q\nwant %q", validated.Body.Result, original.Value)
}
} else if original.Value != validated.Body.Result {
t.Errorf("\ngot value=%q\nwant %q", validated.Body.Result, original.Value)
}
}
// TestStackTraceRequest executes to a breakpoint and tests different
// good and bad configurations of 'stackTrace' requests.
func TestStackTraceRequest(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
var stResp *dap.StackTraceResponse
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{8, 18},
[]onBreakpoint{{
// Stop at line 8
execute: func() {
// Even though the stack frames do not change,
// repeated requests at the same breakpoint
// would assign next block of unique ids to them each time.
const NumFrames = 6
reqIndex := 0
frameID := func() int {
return startHandle + reqIndex
}
tests := map[string]struct {
startFrame int
levels int
wantStartName string
wantStartLine int
wantStartFrame int
wantFramesReturned int
wantFramesAvailable int
exact bool
}{
"all frame levels from 0 to NumFrames": {0, NumFrames, "main.Increment", 8, 0, NumFrames, NumFrames, true},
"subset of frames from 1 to -1": {1, NumFrames - 1, "main.Increment", 11, 1, NumFrames - 1, NumFrames, true},
"load stack in pages: first half": {0, NumFrames / 2, "main.Increment", 8, 0, NumFrames / 2, NumFrames, false},
"load stack in pages: second half": {NumFrames / 2, NumFrames, "main.main", 17, NumFrames / 2, NumFrames / 2, NumFrames, true},
"zero levels means all levels": {0, 0, "main.Increment", 8, 0, NumFrames, NumFrames, true},
"zero levels means all remaining levels": {NumFrames / 2, 0, "main.main", 17, NumFrames / 2, NumFrames / 2, NumFrames, true},
"negative levels treated as 0 (all)": {0, -10, "main.Increment", 8, 0, NumFrames, NumFrames, true},
"OOB levels is capped at available len": {0, NumFrames + 1, "main.Increment", 8, 0, NumFrames, NumFrames, true},
"OOB levels is capped at available len 1": {1, NumFrames + 1, "main.Increment", 11, 1, NumFrames - 1, NumFrames, true},
"negative startFrame treated as 0": {-10, 0, "main.Increment", 8, 0, NumFrames, NumFrames, true},
"OOB startFrame returns empty trace": {NumFrames, 0, "main.Increment", -1, -1, 0, NumFrames, true},
}
for name, tc := range tests {
client.StackTraceRequest(1, tc.startFrame, tc.levels)
stResp = client.ExpectStackTraceResponse(t)
checkStackFramesNamed(name, t, stResp,
tc.wantStartName, tc.wantStartLine, frameID(), tc.wantFramesReturned, tc.wantFramesAvailable, tc.exact)
reqIndex += len(stResp.Body.StackFrames)
}
},
disconnect: false,
}, {
// Stop at line 18
execute: func() {
// Frame ids get reset at each breakpoint.
client.StackTraceRequest(1, 0, 0)
stResp = client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stResp, "main.main", 18, startHandle, 3, 3)
},
disconnect: false,
}})
})
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
var stResp *dap.StackTraceResponse
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{8, 18},
[]onBreakpoint{{
// Stop at line 8
execute: func() {
// Even though the stack frames do not change,
// repeated requests at the same breakpoint
// would assign next block of unique ids to them each time.
const NumFrames = 6
var frames []dap.StackFrame
for start, levels := 0, 1; start < NumFrames; {
client.StackTraceRequest(1, start, levels)
stResp = client.ExpectStackTraceResponse(t)
frames = append(frames, stResp.Body.StackFrames...)
if stResp.Body.TotalFrames < NumFrames {
t.Errorf("got %#v\nwant TotalFrames>=%d\n", stResp.Body.TotalFrames, NumFrames)
}
if len(stResp.Body.StackFrames) < levels {
t.Errorf("got len(StackFrames)=%d\nwant >=%d\n", len(stResp.Body.StackFrames), levels)
}
start += len(stResp.Body.StackFrames)
}
// TODO check all the frames.
want := []struct {
wantName string
wantLine int
}{
{"main.Increment", 8},
{"main.Increment", 11},
{"main.Increment", 11},
{"main.main", 17},
{"runtime.main", 0},
{"runtime.goexit", 0},
}
for i, frame := range frames {
frameId := startHandle + i
if frame.Id != frameId {
t.Errorf("got %#v\nwant Id=%d\n", frame, frameId)
}
// Verify the name and line corresponding to the first returned frame (if any).
// This is useful when the first frame is the frame corresponding to the breakpoint at
// a predefined line. Line values < 0 are a signal to skip the check (which can be useful
// for frames in the third-party code, where we do not control the lines).
if want[i].wantLine > 0 && frame.Line != want[i].wantLine {
t.Errorf("got Line=%d\nwant %d\n", frame.Line, want[i].wantLine)
}
if want[i].wantName != "" && frame.Name != want[i].wantName {
t.Errorf("got Name=%s\nwant %s\n", frame.Name, want[i].wantName)
}
}
},
disconnect: false,
}, {
// Stop at line 18
execute: func() {
// Frame ids get reset at each breakpoint.
client.StackTraceRequest(1, 0, 0)
stResp = client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stResp, "main.main", 18, startHandle, 3, 3)
},
disconnect: false,
}})
})
}
func TestSelectedThreadsRequest(t *testing.T) {
runTest(t, "goroutinestackprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{20},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 20)
defaultMaxGoroutines := maxGoroutines
defer func() { maxGoroutines = defaultMaxGoroutines }()
maxGoroutines = 1
client.SetBreakpointsRequest(fixture.Source, []int{8})
client.ExpectSetBreakpointsResponse(t)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "breakpoint" || se.Body.ThreadId == 1 {
t.Errorf("got %#v, want Reason=%q, ThreadId!=1", se, "breakpoint")
}
client.ThreadsRequest()
oe := client.ExpectOutputEvent(t)
if !strings.HasPrefix(oe.Body.Output, "Too many goroutines") {
t.Errorf("got %#v, expected Output=\"Too many goroutines...\"\n", oe)
}
tr := client.ExpectThreadsResponse(t)
if len(tr.Body.Threads) != 2 {
t.Errorf("got %d threads, expected 2\n", len(tr.Body.Threads))
}
var selectedFound bool
for _, thread := range tr.Body.Threads {
if thread.Id == se.Body.ThreadId {
selectedFound = true
break
}
}
if !selectedFound {
t.Errorf("got %#v, want ThreadId=%d\n", tr.Body.Threads, se.Body.ThreadId)
}
},
disconnect: true,
}})
})
}
func TestHideSystemGoroutinesRequest(t *testing.T) {
tests := []struct{ hideSystemGoroutines bool }{
{hideSystemGoroutines: true},
{hideSystemGoroutines: false},
}
for _, tt := range tests {
runTest(t, "goroutinestackprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec",
"program": fixture.Path,
"hideSystemGoroutines": tt.hideSystemGoroutines,
"stopOnEntry": !stopOnEntry,
})
},
// Set breakpoints
fixture.Source, []int{25},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 25)
client.ThreadsRequest()
tr := client.ExpectThreadsResponse(t)
// The user process creates 10 goroutines in addition to the
// main goroutine, for a total of 11 goroutines.
userCount := 11
if tt.hideSystemGoroutines {
if len(tr.Body.Threads) != userCount {
t.Errorf("got %d goroutines, expected %d\n", len(tr.Body.Threads), userCount)
}
} else {
if len(tr.Body.Threads) <= userCount {
t.Errorf("got %d goroutines, expected >%d\n", len(tr.Body.Threads), userCount)
}
}
},
disconnect: true,
}})
})
}
}
// TestScopesAndVariablesRequests executes to a breakpoint and tests different
// configurations of 'scopes' and 'variables' requests.
func TestScopesAndVariablesRequests(t *testing.T) {
runTest(t, "testvariables", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showGlobalVariables": true, "backend": "default",
})
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
// Stop at first breakpoint
execute: func() {
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
startLineno := 66
if runtime.GOOS == "windows" && goversion.VersionAfterOrEqual(runtime.Version(), 1, 15) {
// Go1.15 on windows inserts a NOP after the call to
// runtime.Breakpoint and marks it same line as the
// runtime.Breakpoint call, making this flaky, so skip the line check.
startLineno = -1
}
checkStackFramesExact(t, stack, "main.foobar", startLineno, 1000, 4, 4)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals", localsScope)
checkScope(t, scopes, 1, "Globals (package main)", globalsScope)
// Globals
client.VariablesRequest(globalsScope)
globals := client.ExpectVariablesResponse(t)
checkVarExact(t, globals, 0, "p1", "main.p1", "10", "int", noChildren)
// Locals
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkChildren(t, locals, "Locals", 33)
checkVarExact(t, locals, 0, "baz", "baz", `"bazburzum"`, "string", noChildren)
ref := checkVarExact(t, locals, 1, "bar", "bar", `main.FooBar {Baz: 10, Bur: "lorem"}`, "main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
bar := client.ExpectVariablesResponse(t)
checkChildren(t, bar, "bar", 2)
checkVarExact(t, bar, 0, "Baz", "bar.Baz", "10", "int", noChildren)
checkVarExact(t, bar, 1, "Bur", "bar.Bur", `"lorem"`, "string", noChildren)
validateEvaluateName(t, client, bar, 0)
validateEvaluateName(t, client, bar, 1)
}
// reflect.Kind == Bool
checkVarExact(t, locals, -1, "b1", "b1", "true", "bool", noChildren)
checkVarExact(t, locals, -1, "b2", "b2", "false", "bool", noChildren)
// reflect.Kind == Int
checkVarExact(t, locals, -1, "a2", "a2", "6", "int", noChildren)
checkVarExact(t, locals, -1, "neg", "neg", "-1", "int", noChildren)
// reflect.Kind == Int8
checkVarExact(t, locals, -1, "i8", "i8", "1", "int8", noChildren)
// reflect.Kind == Int16 - see testvariables2
// reflect.Kind == Int32 - see testvariables2
// reflect.Kind == Int64 - see testvariables2
// reflect.Kind == Uint
// reflect.Kind == Uint8
checkVarExact(t, locals, -1, "u8", "u8", "255 = 0xff", "uint8", noChildren)
// reflect.Kind == Uint16
checkVarExact(t, locals, -1, "u16", "u16", "65535 = 0xffff", "uint16", noChildren)
// reflect.Kind == Uint32
checkVarExact(t, locals, -1, "u32", "u32", "4294967295 = 0xffffffff", "uint32", noChildren)
// reflect.Kind == Uint64
checkVarExact(t, locals, -1, "u64", "u64", "18446744073709551615 = 0xffffffffffffffff", "uint64", noChildren)
// reflect.Kind == Uintptr
checkVarExact(t, locals, -1, "up", "up", "5 = 0x5", "uintptr", noChildren)
// reflect.Kind == Float32
checkVarExact(t, locals, -1, "f32", "f32", "1.2", "float32", noChildren)
// reflect.Kind == Float64
checkVarExact(t, locals, -1, "a3", "a3", "7.23", "float64", noChildren)
// reflect.Kind == Complex64
ref = checkVarExact(t, locals, -1, "c64", "c64", "(1 + 2i)", "complex64", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
c64 := client.ExpectVariablesResponse(t)
checkChildren(t, c64, "c64", 2)
checkVarExact(t, c64, 0, "real", "", "1", "float32", noChildren)
checkVarExact(t, c64, 1, "imaginary", "", "2", "float32", noChildren)
}
// reflect.Kind == Complex128
ref = checkVarExact(t, locals, -1, "c128", "c128", "(2 + 3i)", "complex128", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
c128 := client.ExpectVariablesResponse(t)
checkChildren(t, c128, "c128", 2)
checkVarExact(t, c128, 0, "real", "", "2", "float64", noChildren)
checkVarExact(t, c128, 1, "imaginary", "", "3", "float64", noChildren)
}
// reflect.Kind == Array
ref = checkVarExact(t, locals, -1, "a4", "a4", "[2]int [1,2]", "[2]int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a4 := client.ExpectVariablesResponse(t)
checkChildren(t, a4, "a4", 2)
checkVarExact(t, a4, 0, "[0]", "a4[0]", "1", "int", noChildren)
checkVarExact(t, a4, 1, "[1]", "a4[1]", "2", "int", noChildren)
}
ref = checkVarExact(t, locals, -1, "a11", "a11", `[3]main.FooBar [{Baz: 1, Bur: "a"},{Baz: 2, Bur: "b"},{Baz: 3, Bur: "c"}]`, "[3]main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a11 := client.ExpectVariablesResponse(t)
checkChildren(t, a11, "a11", 3)
checkVarExact(t, a11, 0, "[0]", "a11[0]", `main.FooBar {Baz: 1, Bur: "a"}`, "main.FooBar", hasChildren)
ref = checkVarExact(t, a11, 1, "[1]", "a11[1]", `main.FooBar {Baz: 2, Bur: "b"}`, "main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a11_1 := client.ExpectVariablesResponse(t)
checkChildren(t, a11_1, "a11[1]", 2)
checkVarExact(t, a11_1, 0, "Baz", "a11[1].Baz", "2", "int", noChildren)
checkVarExact(t, a11_1, 1, "Bur", "a11[1].Bur", `"b"`, "string", noChildren)
validateEvaluateName(t, client, a11_1, 0)
validateEvaluateName(t, client, a11_1, 1)
}
checkVarExact(t, a11, 2, "[2]", "a11[2]", `main.FooBar {Baz: 3, Bur: "c"}`, "main.FooBar", hasChildren)
}
// reflect.Kind == Chan - see testvariables2
// reflect.Kind == Func - see testvariables2
// reflect.Kind == Interface - see testvariables2
// reflect.Kind == Map - see testvariables2
// reflect.Kind == Ptr
ref = checkVarExact(t, locals, -1, "a7", "a7", `*main.FooBar {Baz: 5, Bur: "strum"}`, "*main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a7 := client.ExpectVariablesResponse(t)
checkChildren(t, a7, "a7", 1)
ref = checkVarExact(t, a7, 0, "", "(*a7)", `main.FooBar {Baz: 5, Bur: "strum"}`, "main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a7val := client.ExpectVariablesResponse(t)
checkChildren(t, a7val, "*a7", 2)
checkVarExact(t, a7val, 0, "Baz", "(*a7).Baz", "5", "int", noChildren)
checkVarExact(t, a7val, 1, "Bur", "(*a7).Bur", `"strum"`, "string", noChildren)
validateEvaluateName(t, client, a7val, 0)
validateEvaluateName(t, client, a7val, 1)
}
}
// TODO(polina): how to test for "nil" (without type) and "void"?
checkVarExact(t, locals, -1, "a9", "a9", "*main.FooBar nil", "*main.FooBar", noChildren)
// reflect.Kind == Slice
ref = checkVarExact(t, locals, -1, "a5", "a5", "[]int len: 5, cap: 5, [1,2,3,4,5]", "[]int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a5 := client.ExpectVariablesResponse(t)
checkChildren(t, a5, "a5", 5)
checkVarExact(t, a5, 0, "[0]", "a5[0]", "1", "int", noChildren)
checkVarExact(t, a5, 4, "[4]", "a5[4]", "5", "int", noChildren)
validateEvaluateName(t, client, a5, 0)
validateEvaluateName(t, client, a5, 1)
}
ref = checkVarExact(t, locals, -1, "a12", "a12", `[]main.FooBar len: 2, cap: 2, [{Baz: 4, Bur: "d"},{Baz: 5, Bur: "e"}]`, "[]main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a12 := client.ExpectVariablesResponse(t)
checkChildren(t, a12, "a12", 2)
checkVarExact(t, a12, 0, "[0]", "a12[0]", `main.FooBar {Baz: 4, Bur: "d"}`, "main.FooBar", hasChildren)
ref = checkVarExact(t, a12, 1, "[1]", "a12[1]", `main.FooBar {Baz: 5, Bur: "e"}`, "main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a12_1 := client.ExpectVariablesResponse(t)
checkChildren(t, a12_1, "a12[1]", 2)
checkVarExact(t, a12_1, 0, "Baz", "a12[1].Baz", "5", "int", noChildren)
checkVarExact(t, a12_1, 1, "Bur", "a12[1].Bur", `"e"`, "string", noChildren)
validateEvaluateName(t, client, a12_1, 0)
validateEvaluateName(t, client, a12_1, 1)
}
}
ref = checkVarExact(t, locals, -1, "a13", "a13", `[]*main.FooBar len: 3, cap: 3, [*{Baz: 6, Bur: "f"},*{Baz: 7, Bur: "g"},*{Baz: 8, Bur: "h"}]`, "[]*main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a13 := client.ExpectVariablesResponse(t)
checkChildren(t, a13, "a13", 3)
checkVarExact(t, a13, 0, "[0]", "a13[0]", `*main.FooBar {Baz: 6, Bur: "f"}`, "*main.FooBar", hasChildren)
checkVarExact(t, a13, 1, "[1]", "a13[1]", `*main.FooBar {Baz: 7, Bur: "g"}`, "*main.FooBar", hasChildren)
ref = checkVarExact(t, a13, 2, "[2]", "a13[2]", `*main.FooBar {Baz: 8, Bur: "h"}`, "*main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a13_2 := client.ExpectVariablesResponse(t)
checkChildren(t, a13_2, "a13[2]", 1)
ref = checkVarExact(t, a13_2, 0, "", "(*a13[2])", `main.FooBar {Baz: 8, Bur: "h"}`, "main.FooBar", hasChildren)
validateEvaluateName(t, client, a13_2, 0)
if ref > 0 {
client.VariablesRequest(ref)
val := client.ExpectVariablesResponse(t)
checkChildren(t, val, "*a13[2]", 2)
checkVarExact(t, val, 0, "Baz", "(*a13[2]).Baz", "8", "int", noChildren)
checkVarExact(t, val, 1, "Bur", "(*a13[2]).Bur", `"h"`, "string", noChildren)
validateEvaluateName(t, client, val, 0)
validateEvaluateName(t, client, val, 1)
}
}
}
// reflect.Kind == String
checkVarExact(t, locals, -1, "a1", "a1", `"foofoofoofoofoofoo"`, "string", noChildren)
checkVarExact(t, locals, -1, "a10", "a10", `"ofo"`, "string", noChildren)
// reflect.Kind == Struct
ref = checkVarExact(t, locals, -1, "a6", "a6", `main.FooBar {Baz: 8, Bur: "word"}`, "main.FooBar", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a6 := client.ExpectVariablesResponse(t)
checkChildren(t, a6, "a6", 2)
checkVarExact(t, a6, 0, "Baz", "a6.Baz", "8", "int", noChildren)
checkVarExact(t, a6, 1, "Bur", "a6.Bur", `"word"`, "string", noChildren)
}
ref = checkVarExact(t, locals, -1, "a8", "a8", `main.FooBar2 {Bur: 10, Baz: "feh"}`, "main.FooBar2", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a8 := client.ExpectVariablesResponse(t)
checkChildren(t, a8, "a8", 2)
checkVarExact(t, a8, 0, "Bur", "a8.Bur", "10", "int", noChildren)
checkVarExact(t, a8, 1, "Baz", "a8.Baz", `"feh"`, "string", noChildren)
}
// reflect.Kind == UnsafePointer - see testvariables2
},
disconnect: false,
}, {
// Stop at second breakpoint
execute: func() {
// Frame ids get reset at each breakpoint.
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "main.barfoo", 27, 1000, 5, 5)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals", localsScope)
checkScope(t, scopes, 1, "Globals (package main)", globalsScope)
client.ScopesRequest(1111)
erres := client.ExpectInvisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to list locals: unknown frame id 1111" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to list locals: unknown frame id 1111\"", erres)
}
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkChildren(t, locals, "Locals", 1)
checkVarExact(t, locals, -1, "a1", "a1", `"bur"`, "string", noChildren)
client.VariablesRequest(globalsScope)
globals := client.ExpectVariablesResponse(t)
checkVarExact(t, globals, 0, "p1", "main.p1", "10", "int", noChildren)
client.VariablesRequest(7777)
erres = client.ExpectInvisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to lookup variable: unknown reference 7777" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to lookup variable: unknown reference 7777\"", erres)
}
},
disconnect: false,
}})
})
}
// TestScopesAndVariablesRequests2 executes to a breakpoint and tests different
// configurations of 'scopes' and 'variables' requests.
func TestScopesAndVariablesRequests2(t *testing.T) {
runTest(t, "testvariables2", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
execute: func() {
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "main.main", -1, 1000, 3, 3)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals", localsScope)
},
disconnect: false,
}, {
execute: func() {
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "main.main", -1, 1000, 3, 3)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
if len(scopes.Body.Scopes) > 1 {
t.Errorf("\ngot %#v\nwant len(scopes)=1 (Argumes & Locals)", scopes)
}
checkScope(t, scopes, 0, "Locals", localsScope)
// Locals
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
// reflect.Kind == Bool - see testvariables
// reflect.Kind == Int - see testvariables
// reflect.Kind == Int8
checkVarExact(t, locals, -1, "ni8", "ni8", "-5", "int8", noChildren)
// reflect.Kind == Int16
checkVarExact(t, locals, -1, "ni16", "ni16", "-5", "int16", noChildren)
// reflect.Kind == Int32
checkVarExact(t, locals, -1, "ni32", "ni32", "-5", "int32", noChildren)
// reflect.Kind == Int64
checkVarExact(t, locals, -1, "ni64", "ni64", "-5", "int64", noChildren)
// reflect.Kind == Uint
// reflect.Kind == Uint8 - see testvariables
// reflect.Kind == Uint16 - see testvariables
// reflect.Kind == Uint32 - see testvariables
// reflect.Kind == Uint64 - see testvariables
// reflect.Kind == Uintptr - see testvariables
// reflect.Kind == Float32 - see testvariables
// reflect.Kind == Float64
checkVarExact(t, locals, -1, "pinf", "pinf", "+Inf", "float64", noChildren)
checkVarExact(t, locals, -1, "ninf", "ninf", "-Inf", "float64", noChildren)
checkVarExact(t, locals, -1, "nan", "nan", "NaN", "float64", noChildren)
// reflect.Kind == Complex64 - see testvariables
// reflect.Kind == Complex128 - see testvariables
// reflect.Kind == Array
checkVarExact(t, locals, -1, "a0", "a0", "[0]int []", "[0]int", noChildren)
// reflect.Kind == Chan
ref := checkVarExact(t, locals, -1, "ch1", "ch1", "chan int 4/11", "chan int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
ch1 := client.ExpectVariablesResponse(t)
checkChildren(t, ch1, "ch1", 11)
checkVarExact(t, ch1, 0, "qcount", "ch1.qcount", "4 = 0x4", "uint", noChildren)
checkVarRegex(t, ch1, 10, "lock", "ch1.lock", `runtime\.mutex {.*key: 0.*}`, `runtime\.mutex`, hasChildren)
validateEvaluateName(t, client, ch1, 0)
validateEvaluateName(t, client, ch1, 10)
}
checkVarExact(t, locals, -1, "chnil", "chnil", "chan int nil", "chan int", noChildren)
// reflect.Kind == Func
checkVarExact(t, locals, -1, "fn1", "fn1", "main.afunc", "main.functype", noChildren)
checkVarExact(t, locals, -1, "fn2", "fn2", "nil", "main.functype", noChildren)
// reflect.Kind == Interface
checkVarExact(t, locals, -1, "ifacenil", "ifacenil", "interface {} nil", "interface {}", noChildren)
ref = checkVarExact(t, locals, -1, "iface2", "iface2", "interface {}(string) \"test\"", "interface {}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
iface2 := client.ExpectVariablesResponse(t)
checkChildren(t, iface2, "iface2", 1)
checkVarExact(t, iface2, 0, "data", "iface2.(data)", `"test"`, "string", noChildren)
validateEvaluateName(t, client, iface2, 0)
}
ref = checkVarExact(t, locals, -1, "iface4", "iface4", "interface {}([]go/constant.Value) [4]", "interface {}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
iface4 := client.ExpectVariablesResponse(t)
checkChildren(t, iface4, "iface4", 1)
ref = checkVarExact(t, iface4, 0, "data", "iface4.(data)", "[]go/constant.Value len: 1, cap: 1, [4]", "[]go/constant.Value", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
iface4data := client.ExpectVariablesResponse(t)
checkChildren(t, iface4data, "iface4.data", 1)
ref = checkVarExact(t, iface4data, 0, "[0]", "iface4.(data)[0]", "go/constant.Value(go/constant.int64Val) 4", "go/constant.Value", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
iface4data0 := client.ExpectVariablesResponse(t)
checkChildren(t, iface4data0, "iface4.data[0]", 1)
checkVarExact(t, iface4data0, 0, "data", "iface4.(data)[0].(data)", "4", "go/constant.int64Val", noChildren)
validateEvaluateName(t, client, iface4data0, 0)
}
}
}
checkVarExact(t, locals, -1, "errnil", "errnil", "error nil", "error", noChildren)
ref = checkVarExact(t, locals, -1, "err1", "err1", "error(*main.astruct) *{A: 1, B: 2}", "error", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
err1 := client.ExpectVariablesResponse(t)
checkChildren(t, err1, "err1", 1)
checkVarExact(t, err1, 0, "data", "err1.(data)", "*main.astruct {A: 1, B: 2}", "*main.astruct", hasChildren)
validateEvaluateName(t, client, err1, 0)
}
ref = checkVarExact(t, locals, -1, "ptrinf", "ptrinf", "*interface {}(**interface {}) **...", "*interface {}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
ptrinf_val := client.ExpectVariablesResponse(t)
checkChildren(t, ptrinf_val, "*ptrinf", 1)
ref = checkVarExact(t, ptrinf_val, 0, "", "(*ptrinf)", "interface {}(**interface {}) **...", "interface {}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
ptrinf_val_data := client.ExpectVariablesResponse(t)
checkChildren(t, ptrinf_val_data, "(*ptrinf).data", 1)
checkVarExact(t, ptrinf_val_data, 0, "data", "(*ptrinf).(data)", "**interface {}(**interface {}) ...", "**interface {}", hasChildren)
validateEvaluateName(t, client, ptrinf_val_data, 0)
}
}
// reflect.Kind == Map
checkVarExact(t, locals, -1, "mnil", "mnil", "map[string]main.astruct nil", "map[string]main.astruct", noChildren)
// key - scalar, value - compound
ref = checkVarExact(t, locals, -1, "m2", "m2", "map[int]*main.astruct [1: *{A: 10, B: 11}, ]", "map[int]*main.astruct", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m2 := client.ExpectVariablesResponse(t)
checkChildren(t, m2, "m2", 2) // each key-value represented by a single child
checkVarExact(t, m2, 0, "len()", "len(m2)", "1", "int", noChildren)
ref = checkVarExact(t, m2, 1, "1", "m2[1]", "*main.astruct {A: 10, B: 11}", "int: *main.astruct", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m2kv1 := client.ExpectVariablesResponse(t)
checkChildren(t, m2kv1, "m2[1]", 1)
ref = checkVarExact(t, m2kv1, 0, "", "(*m2[1])", "main.astruct {A: 10, B: 11}", "main.astruct", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m2kv1deref := client.ExpectVariablesResponse(t)
checkChildren(t, m2kv1deref, "*m2[1]", 2)
checkVarExact(t, m2kv1deref, 0, "A", "(*m2[1]).A", "10", "int", noChildren)
checkVarExact(t, m2kv1deref, 1, "B", "(*m2[1]).B", "11", "int", noChildren)
validateEvaluateName(t, client, m2kv1deref, 0)
validateEvaluateName(t, client, m2kv1deref, 1)
}
}
}
// key - compound, value - scalar
ref = checkVarExact(t, locals, -1, "m3", "m3", "map[main.astruct]int [{A: 1, B: 1}: 42, {A: 2, B: 2}: 43, ]", "map[main.astruct]int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m3 := client.ExpectVariablesResponse(t)
checkChildren(t, m3, "m3", 3) // each key-value represented by a single child
checkVarExact(t, m3, 0, "len()", "len(m3)", "2", "int", noChildren)
ref = checkVarRegex(t, m3, 1, `main\.astruct {A: 1, B: 1}`, `m3\[\(\*\(\*"main.astruct"\)\(0x[0-9a-f]+\)\)\]`, "42", "int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m3kv0 := client.ExpectVariablesResponse(t)
checkChildren(t, m3kv0, "m3[0]", 2)
checkVarRegex(t, m3kv0, 0, "A", `\(*\(*"main\.astruct"\)\(0x[0-9a-f]+\)\)\.A`, "1", "int", noChildren)
validateEvaluateName(t, client, m3kv0, 0)
}
ref = checkVarRegex(t, m3, 2, `main\.astruct {A: 2, B: 2}`, `m3\[\(\*\(\*"main.astruct"\)\(0x[0-9a-f]+\)\)\]`, "43", "", hasChildren)
if ref > 0 { // inspect another key from another key-value child
client.VariablesRequest(ref)
m3kv1 := client.ExpectVariablesResponse(t)
checkChildren(t, m3kv1, "m3[1]", 2)
checkVarRegex(t, m3kv1, 1, "B", `\(*\(*"main\.astruct"\)\(0x[0-9a-f]+\)\)\.B`, "2", "int", noChildren)
validateEvaluateName(t, client, m3kv1, 1)
}
}
// key - compound, value - compound
ref = checkVarExact(t, locals, -1, "m4", "m4", "map[main.astruct]main.astruct [{A: 1, B: 1}: {A: 11, B: 11}, {A: 2, B: 2}: {A: 22, B: 22}, ]", "map[main.astruct]main.astruct", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m4 := client.ExpectVariablesResponse(t)
checkChildren(t, m4, "m4", 5) // each key and value represented by a child, so double the key-value count
checkVarExact(t, m4, 0, "len()", "len(m4)", "2", "int", noChildren)
checkVarRegex(t, m4, 1, `\[key 0\]`, `\(\*\(\*"main\.astruct"\)\(0x[0-9a-f]+\)\)`, `main\.astruct {A: 1, B: 1}`, `main\.astruct`, hasChildren)
checkVarRegex(t, m4, 2, `\[val 0\]`, `m4\[\(\*\(\*"main\.astruct"\)\(0x[0-9a-f]+\)\)\]`, `main\.astruct {A: 11, B: 11}`, `main\.astruct`, hasChildren)
ref = checkVarRegex(t, m4, 3, `\[key 1\]`, `\(\*\(\*"main\.astruct"\)\(0x[0-9a-f]+\)\)`, `main\.astruct {A: 2, B: 2}`, `main\.astruct`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m4Key1 := client.ExpectVariablesResponse(t)
checkChildren(t, m4Key1, "m4Key1", 2)
checkVarRegex(t, m4Key1, 0, "A", `\(\*\(\*"main\.astruct"\)\(0x[0-9a-f]+\)\)\.A`, "2", "int", noChildren)
checkVarRegex(t, m4Key1, 1, "B", `\(\*\(\*"main\.astruct"\)\(0x[0-9a-f]+\)\)\.B`, "2", "int", noChildren)
validateEvaluateName(t, client, m4Key1, 0)
validateEvaluateName(t, client, m4Key1, 1)
}
ref = checkVarRegex(t, m4, 4, `\[val 1\]`, `m4\[\(\*\(\*"main\.astruct"\)\(0x[0-9a-f]+\)\)\]`, `main\.astruct {A: 22, B: 22}`, "main.astruct", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m4Val1 := client.ExpectVariablesResponse(t)
checkChildren(t, m4Val1, "m4Val1", 2)
checkVarRegex(t, m4Val1, 0, "A", `m4\[\(\*\(\*"main\.astruct"\)\(0x[0-9a-f]+\)\)\]\.A`, "22", "int", noChildren)
checkVarRegex(t, m4Val1, 1, "B", `m4\[\(\*\(\*"main\.astruct"\)\(0x[0-9a-f]+\)\)\]\.B`, "22", "int", noChildren)
validateEvaluateName(t, client, m4Val1, 0)
validateEvaluateName(t, client, m4Val1, 1)
}
}
checkVarExact(t, locals, -1, "emptymap", "emptymap", "map[string]string []", "map[string]string", noChildren)
// reflect.Kind == Ptr
ref = checkVarExact(t, locals, -1, "pp1", "pp1", "**1", "**int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
pp1val := client.ExpectVariablesResponse(t)
checkChildren(t, pp1val, "*pp1", 1)
ref = checkVarExact(t, pp1val, 0, "", "(*pp1)", "*1", "*int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
pp1valval := client.ExpectVariablesResponse(t)
checkChildren(t, pp1valval, "*(*pp1)", 1)
checkVarExact(t, pp1valval, 0, "", "(*(*pp1))", "1", "int", noChildren)
validateEvaluateName(t, client, pp1valval, 0)
}
}
// reflect.Kind == Slice
ref = checkVarExact(t, locals, -1, "zsslice", "zsslice", "[]struct {} len: 3, cap: 3, [{},{},{}]", "[]struct {}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
zsslice := client.ExpectVariablesResponse(t)
checkChildren(t, zsslice, "zsslice", 3)
checkVarExact(t, zsslice, 2, "[2]", "zsslice[2]", "struct {} {}", "struct {}", noChildren)
validateEvaluateName(t, client, zsslice, 2)
}
checkVarExact(t, locals, -1, "emptyslice", "emptyslice", "[]string len: 0, cap: 0, []", "[]string", noChildren)
checkVarExact(t, locals, -1, "nilslice", "nilslice", "[]int len: 0, cap: 0, nil", "[]int", noChildren)
// reflect.Kind == String
checkVarExact(t, locals, -1, "longstr", "longstr", longstr, "string", noChildren)
// reflect.Kind == Struct
checkVarExact(t, locals, -1, "zsvar", "zsvar", "struct {} {}", "struct {}", noChildren)
// reflect.Kind == UnsafePointer
// TODO(polina): how do I test for unsafe.Pointer(nil)?
checkVarRegex(t, locals, -1, "upnil", "upnil", `unsafe\.Pointer\(0x0\)`, "int", noChildren)
checkVarRegex(t, locals, -1, "up1", "up1", `unsafe\.Pointer\(0x[0-9a-f]+\)`, "int", noChildren)
// Test unreadable variable
ref = checkVarRegex(t, locals, -1, "unread", "unread", `\*\(unreadable .+\)`, "int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
val := client.ExpectVariablesResponse(t)
checkChildren(t, val, "*unread", 1)
checkVarRegex(t, val, 0, "^$", `\(\*unread\)`, `\(unreadable .+\)`, "int", noChildren)
validateEvaluateName(t, client, val, 0)
}
},
disconnect: true,
}})
})
}
// TestScopesRequestsOptimized executes to a breakpoint and tests different
// that the name of the "Locals" scope is correctly annotated with
// a warning about debugging an optimized function.
func TestScopesRequestsOptimized(t *testing.T) {
runTestBuildFlags(t, "testvariables", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showGlobalVariables": true,
})
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
// Stop at first breakpoint
execute: func() {
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
startLineno := 66
if runtime.GOOS == "windows" && goversion.VersionAfterOrEqual(runtime.Version(), 1, 15) {
// Go1.15 on windows inserts a NOP after the call to
// runtime.Breakpoint and marks it same line as the
// runtime.Breakpoint call, making this flaky, so skip the line check.
startLineno = -1
}
checkStackFramesExact(t, stack, "main.foobar", startLineno, 1000, 4, 4)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals (warning: optimized function)", localsScope)
checkScope(t, scopes, 1, "Globals (package main)", globalsScope)
},
disconnect: false,
}, {
// Stop at second breakpoint
execute: func() {
// Frame ids get reset at each breakpoint.
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "main.barfoo", 27, 1000, 5, 5)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals (warning: optimized function)", localsScope)
checkScope(t, scopes, 1, "Globals (package main)", globalsScope)
},
disconnect: false,
}})
},
protest.EnableOptimization)
}
// TestVariablesLoading exposes test cases where variables might be partially or
// fully unloaded.
func TestVariablesLoading(t *testing.T) {
runTest(t, "testvariables2", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
execute: func() {},
disconnect: false,
}, {
execute: func() {
// Change default config values to trigger certain unloaded corner cases
saveDefaultConfig := DefaultLoadConfig
DefaultLoadConfig.MaxStructFields = 5
DefaultLoadConfig.MaxStringLen = 64
defer func() {
DefaultLoadConfig = saveDefaultConfig
}()
client.StackTraceRequest(1, 0, 0)
client.ExpectStackTraceResponse(t)
client.ScopesRequest(1000)
client.ExpectScopesResponse(t)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
// String partially missing based on LoadConfig.MaxStringLen
// See also TestVariableLoadingOfLongStrings
checkVarExact(t, locals, -1, "longstr", "longstr", longstrLoaded64, "string", noChildren)
checkArrayChildren := func(t *testing.T, longarr *dap.VariablesResponse, parentName string, start int) {
t.Helper()
for i, child := range longarr.Body.Variables {
idx := start + i
if child.Name != fmt.Sprintf("[%d]", idx) || child.EvaluateName != fmt.Sprintf("%s[%d]", parentName, idx) {
t.Errorf("Expected %s[%d] to have Name=\"[%d]\" EvaluateName=\"%s[%d]\", got %#v", parentName, idx, idx, parentName, idx, child)
}
}
}
// Array not fully loaded based on LoadConfig.MaxArrayValues.
// Expect to be able to load array by paging.
ref := checkVarExactIndexed(t, locals, -1, "longarr", "longarr", "[100]int [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,...+36 more]", "[100]int", hasChildren, 100, 0)
if ref > 0 {
client.VariablesRequest(ref)
longarr := client.ExpectVariablesResponse(t)
checkChildren(t, longarr, "longarr", 64)
checkArrayChildren(t, longarr, "longarr", 0)
client.IndexedVariablesRequest(ref, 0, 100)
longarr = client.ExpectVariablesResponse(t)
checkChildren(t, longarr, "longarr", 100)
checkArrayChildren(t, longarr, "longarr", 0)
client.IndexedVariablesRequest(ref, 50, 50)
longarr = client.ExpectVariablesResponse(t)
checkChildren(t, longarr, "longarr", 50)
checkArrayChildren(t, longarr, "longarr", 50)
}
// Slice not fully loaded based on LoadConfig.MaxArrayValues.
// Expect to be able to load slice by paging.
ref = checkVarExactIndexed(t, locals, -1, "longslice", "longslice", "[]int len: 100, cap: 100, [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,...+36 more]", "[]int", hasChildren, 100, 0)
if ref > 0 {
client.VariablesRequest(ref)
longarr := client.ExpectVariablesResponse(t)
checkChildren(t, longarr, "longslice", 64)
checkArrayChildren(t, longarr, "longslice", 0)
client.IndexedVariablesRequest(ref, 0, 100)
longarr = client.ExpectVariablesResponse(t)
checkChildren(t, longarr, "longslice", 100)
checkArrayChildren(t, longarr, "longslice", 0)
client.IndexedVariablesRequest(ref, 50, 50)
longarr = client.ExpectVariablesResponse(t)
checkChildren(t, longarr, "longslice", 50)
checkArrayChildren(t, longarr, "longslice", 50)
}
// Map not fully loaded based on LoadConfig.MaxArrayValues
// Expect to be able to load map by paging.
ref = checkVarRegexIndexed(t, locals, -1, "m1", "m1", `map\[string\]main\.astruct \[.+\.\.\.`, `map\[string\]main\.astruct`, hasChildren, 66, 1)
if ref > 0 {
client.VariablesRequest(ref)
m1 := client.ExpectVariablesResponse(t)
checkChildren(t, m1, "m1", 65)
client.IndexedVariablesRequest(ref, 0, 66)
m1 = client.ExpectVariablesResponse(t)
checkChildren(t, m1, "m1", 66)
client.IndexedVariablesRequest(ref, 0, 33)
m1part1 := client.ExpectVariablesResponse(t)
checkChildren(t, m1part1, "m1", 33)
client.IndexedVariablesRequest(ref, 33, 33)
m1part2 := client.ExpectVariablesResponse(t)
checkChildren(t, m1part2, "m1", 33)
if len(m1part1.Body.Variables)+len(m1part2.Body.Variables) == len(m1.Body.Variables) {
for i, got := range m1part1.Body.Variables {
want := m1.Body.Variables[i]
if got.Name != want.Name || got.Value != want.Value {
t.Errorf("got %#v, want Name=%q Value=%q", got, want.Name, want.Value)
}
}
for i, got := range m1part2.Body.Variables {
want := m1.Body.Variables[i+len(m1part1.Body.Variables)]
if got.Name != want.Name || got.Value != want.Value {
t.Errorf("got %#v, want Name=%q Value=%q", got, want.Name, want.Value)
}
}
}
client.NamedVariablesRequest(ref)
named := client.ExpectVariablesResponse(t)
checkChildren(t, named, "m1", 1)
checkVarExact(t, named, 0, "len()", "len(m1)", "66", "int", noChildren)
}
// Struct partially missing based on LoadConfig.MaxStructFields
ref = checkVarExact(t, locals, -1, "sd", "sd", "(loaded 5/6) main.D {u1: 0, u2: 0, u3: 0, u4: 0, u5: 0,...+1 more}", "main.D", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
sd := client.ExpectVariablesResponse(t)
checkChildren(t, sd, "sd", 5)
}
// Fully missing struct auto-loaded when reaching LoadConfig.MaxVariableRecurse (also tests evaluateName corner case)
ref = checkVarRegex(t, locals, -1, "c1", "c1", `main\.cstruct {pb: \*main\.bstruct {a: \(\*main\.astruct\)\(0x[0-9a-f]+\)}, sa: []\*main\.astruct len: 3, cap: 3, [\*\(\*main\.astruct\)\(0x[0-9a-f]+\),\*\(\*main\.astruct\)\(0x[0-9a-f]+\),\*\(\*main.astruct\)\(0x[0-9a-f]+\)]}`, `main\.cstruct`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
c1 := client.ExpectVariablesResponse(t)
checkChildren(t, c1, "c1", 2)
ref = checkVarRegex(t, c1, 1, "sa", `c1\.sa`, `\[\]\*main\.astruct len: 3, cap: 3, \[\*\(\*main\.astruct\)\(0x[0-9a-f]+\),\*\(\*main\.astruct\)\(0x[0-9a-f]+\),\*\(\*main\.astruct\)\(0x[0-9a-f]+\)\]`, `\[\]\*main\.astruct`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
c1sa := client.ExpectVariablesResponse(t)
checkChildren(t, c1sa, "c1.sa", 3)
ref = checkVarRegex(t, c1sa, 0, `\[0\]`, `c1\.sa\[0\]`, `\*\(\*main\.astruct\)\(0x[0-9a-f]+\)`, `\*main\.astruct`, hasChildren)
if ref > 0 {
// Auto-loading of fully missing struc children happens here
client.VariablesRequest(ref)
c1sa0 := client.ExpectVariablesResponse(t)
checkChildren(t, c1sa0, "c1.sa[0]", 1)
// TODO(polina): there should be children here once we support auto loading
checkVarExact(t, c1sa0, 0, "", "(*c1.sa[0])", "main.astruct {A: 1, B: 2}", "main.astruct", hasChildren)
}
}
}
// Fully missing struct auto-loaded when hitting LoadConfig.MaxVariableRecurse (also tests evaluteName corner case)
ref = checkVarRegex(t, locals, -1, "aas", "aas", `\[\]main\.a len: 1, cap: 1, \[{aas: \[\]main\.a len: 1, cap: 1, \[\(\*main\.a\)\(0x[0-9a-f]+\)\]}\]`, `\[\]main\.a`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
aas := client.ExpectVariablesResponse(t)
checkChildren(t, aas, "aas", 1)
ref = checkVarRegex(t, aas, 0, "[0]", `aas\[0\]`, `main\.a {aas: \[\]main.a len: 1, cap: 1, \[\(\*main\.a\)\(0x[0-9a-f]+\)\]}`, `main\.a`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
aas0 := client.ExpectVariablesResponse(t)
checkChildren(t, aas0, "aas[0]", 1)
ref = checkVarRegex(t, aas0, 0, "aas", `aas\[0\]\.aas`, `\[\]main\.a len: 1, cap: 1, \[\(\*main\.a\)\(0x[0-9a-f]+\)\]`, `\[\]main\.a`, hasChildren)
if ref > 0 {
// Auto-loading of fully missing struct children happens here
client.VariablesRequest(ref)
aas0aas := client.ExpectVariablesResponse(t)
checkChildren(t, aas0aas, "aas[0].aas", 1)
// TODO(polina): there should be a child here once we support auto loading - test for "aas[0].aas[0].aas"
ref = checkVarRegex(t, aas0aas, 0, "[0]", `aas\[0\]\.aas\[0\]`, `main\.a {aas: \[\]main\.a len: 1, cap: 1, \[\(\*main\.a\)\(0x[0-9a-f]+\)\]}`, "main.a", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
aas0aas0 := client.ExpectVariablesResponse(t)
checkChildren(t, aas0aas, "aas[0].aas[0]", 1)
checkVarRegex(t, aas0aas0, 0, "aas", `aas\[0\]\.aas\[0\]\.aas`, `\[\]main\.a len: 1, cap: 1, \[\(\*main\.a\)\(0x[0-9a-f]+\)\]`, `\[\]main\.a`, hasChildren)
}
}
}
}
// Fully missing map auto-loaded when hitting LoadConfig.MaxVariableRecurse (also tests evaluateName corner case)
ref = checkVarExact(t, locals, -1, "tm", "tm", "main.truncatedMap {v: []map[string]main.astruct len: 1, cap: 1, [[...]]}", "main.truncatedMap", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
tm := client.ExpectVariablesResponse(t)
checkChildren(t, tm, "tm", 1)
ref = checkVarExact(t, tm, 0, "v", "tm.v", "[]map[string]main.astruct len: 1, cap: 1, [[...]]", "[]map[string]main.astruct", hasChildren)
if ref > 0 {
// Auto-loading of fully missing map chidlren happens here, but they get trancated at MaxArrayValuess
client.VariablesRequest(ref)
tmV := client.ExpectVariablesResponse(t)
checkChildren(t, tmV, "tm.v", 1)
ref = checkVarRegex(t, tmV, 0, `\[0\]`, `tm\.v\[0\]`, `map\[string\]main\.astruct \[.+\.\.\.`, `map\[string\]main\.astruct`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
tmV0 := client.ExpectVariablesResponse(t)
checkChildren(t, tmV0, "tm.v[0]", 65)
}
}
}
// Auto-loading works with call return variables as well
protest.MustSupportFunctionCalls(t, testBackend)
client.EvaluateRequest("call rettm()", 1000, "repl")
got := client.ExpectEvaluateResponse(t)
ref = checkEval(t, got, "main.truncatedMap {v: []map[string]main.astruct len: 1, cap: 1, [[...]]}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
rv := client.ExpectVariablesResponse(t)
checkChildren(t, rv, "rv", 1)
ref = checkVarExact(t, rv, 0, "~r0", "", "main.truncatedMap {v: []map[string]main.astruct len: 1, cap: 1, [[...]]}", "main.truncatedMap", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
tm := client.ExpectVariablesResponse(t)
checkChildren(t, tm, "tm", 1)
ref = checkVarExact(t, tm, 0, "v", "", "[]map[string]main.astruct len: 1, cap: 1, [[...]]", "[]map[string]main.astruct", hasChildren)
if ref > 0 {
// Auto-loading of fully missing map chidlren happens here, but they get trancated at MaxArrayValuess
client.VariablesRequest(ref)
tmV := client.ExpectVariablesResponse(t)
checkChildren(t, tmV, "tm.v", 1)
// TODO(polina): this evaluate name is not usable - it should be empty
ref = checkVarRegex(t, tmV, 0, `\[0\]`, `\[0\]`, `map\[string\]main\.astruct \[.+\.\.\.`, `map\[string\]main\.astruct`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
tmV0 := client.ExpectVariablesResponse(t)
checkChildren(t, tmV0, "tm.v[0]", 65)
}
}
}
}
// TODO(polina): need fully missing array/slice test case
// Zero slices, structs and maps are not treated as fully missing
// See zsvar, zsslice,, emptyslice, emptymap, a0
},
disconnect: true,
}})
})
runTest(t, "testvariables", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
execute: func() {
DefaultLoadConfig.FollowPointers = false
defer func() { DefaultLoadConfig.FollowPointers = true }()
client.StackTraceRequest(1, 0, 0)
client.ExpectStackTraceResponse(t)
var loadvars = func(frame int) {
client.ScopesRequest(frame)
scopes := client.ExpectScopesResponse(t)
localsRef := 0
for _, s := range scopes.Body.Scopes {
if s.Name == "Locals" {
localsRef = s.VariablesReference
}
}
client.VariablesRequest(localsRef)
locals := client.ExpectVariablesResponse(t)
// Interface auto-loaded when hitting LoadConfig.MaxVariableRecurse=1
ref := checkVarRegex(t, locals, -1, "ni", "ni", `\[\]interface {} len: 1, cap: 1, \[\[\]interface {} len: 1, cap: 1, \[\*\(\*interface {}\)\(0x[0-9a-f]+\)\]\]`, `\[\]interface {}`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
ni := client.ExpectVariablesResponse(t)
ref = checkVarRegex(t, ni, 0, `\[0\]`, `ni\[0\]`, `interface \{\}\(\[\]interface \{\}\) \[\*\(\*interface \{\}\)\(0x[0-9a-f]+\)\]`, "interface {}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
niI1 := client.ExpectVariablesResponse(t)
ref = checkVarRegex(t, niI1, 0, "data", `ni\[0\]\.\(data\)`, `\[\]interface {} len: 1, cap: 1, \[\*\(\*interface {}\)\(0x[0-9a-f]+\)`, `\[\]interface {}`, hasChildren)
if ref > 0 {
// Auto-loading happens here
client.VariablesRequest(ref)
niI1Data := client.ExpectVariablesResponse(t)
ref = checkVarExact(t, niI1Data, 0, "[0]", "ni[0].(data)[0]", "interface {}(int) 123", "interface {}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
niI1DataI2 := client.ExpectVariablesResponse(t)
checkVarExact(t, niI1DataI2, 0, "data", "ni[0].(data)[0].(data)", "123", "int", noChildren)
}
}
}
}
// Pointer values loaded even with LoadConfig.FollowPointers=false
checkVarExact(t, locals, -1, "a7", "a7", "*main.FooBar {Baz: 5, Bur: \"strum\"}", "*main.FooBar", hasChildren)
// Auto-loading works on results of evaluate expressions as well
client.EvaluateRequest("a7", frame, "repl")
checkEval(t, client.ExpectEvaluateResponse(t), "*main.FooBar {Baz: 5, Bur: \"strum\"}", hasChildren)
client.EvaluateRequest("&a7", frame, "repl")
pa7 := client.ExpectEvaluateResponse(t)
ref = checkEvalRegex(t, pa7, `\*\(\*main\.FooBar\)\(0x[0-9a-f]+\)`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a7 := client.ExpectVariablesResponse(t)
checkVarExact(t, a7, 0, "a7", "(*(&a7))", "*main.FooBar {Baz: 5, Bur: \"strum\"}", "*main.FooBar", hasChildren)
}
}
// Frame-independent loading expressions allow us to auto-load
// variables in any frame, not just topmost.
loadvars(1000 /*first topmost frame*/)
// step into another function
client.StepInRequest(1)
client.ExpectStepInResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.barfoo", 24)
loadvars(1001 /*second frame here is same as topmost above*/)
},
disconnect: true,
}})
})
}
// TestVariablesMetadata exposes test cases where variables contain metadata that
// can be accessed by requesting named variables.
func TestVariablesMetadata(t *testing.T) {
runTest(t, "testvariables2", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
execute: func() {},
disconnect: false,
}, {
execute: func() {
checkStop(t, client, 1, "main.main", 372)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkNamedChildren := func(ref int, name, typeStr string, vals []string, evaluate bool) {
// byteslice, request named variables
client.NamedVariablesRequest(ref)
named := client.ExpectVariablesResponse(t)
checkChildren(t, named, name, 1)
checkVarExact(t, named, 0, "string()", "", "\"tèst\"", "string", false)
client.VariablesRequest(ref)
all := client.ExpectVariablesResponse(t)
checkChildren(t, all, name, len(vals)+1)
checkVarExact(t, all, 0, "string()", "", "\"tèst\"", "string", false)
for i, v := range vals {
idx := fmt.Sprintf("[%d]", i)
evalName := fmt.Sprintf("%s[%d]", name, i)
if evaluate {
evalName = fmt.Sprintf("(%s)[%d]", name, i)
}
checkVarExact(t, all, i+1, idx, evalName, v, typeStr, false)
}
}
bytes := []string{"116 = 0x74", "195 = 0xc3", "168 = 0xa8", "115 = 0x73", "116 = 0x74"}
runes := []string{"116", "232", "115", "116"}
// byteslice
ref := checkVarExactIndexed(t, locals, -1, "byteslice", "byteslice", "[]uint8 len: 5, cap: 5, [116,195,168,115,116]", "[]uint8", true, 5, 1)
checkNamedChildren(ref, "byteslice", "uint8", bytes, false)
client.EvaluateRequest("byteslice", 0, "")
got := client.ExpectEvaluateResponse(t)
ref = checkEvalIndexed(t, got, "[]uint8 len: 5, cap: 5, [116,195,168,115,116]", hasChildren, 5, 1)
checkNamedChildren(ref, "byteslice", "uint8", bytes, true)
// runeslice
ref = checkVarExactIndexed(t, locals, -1, "runeslice", "runeslice", "[]int32 len: 4, cap: 4, [116,232,115,116]", "[]int32", true, 4, 1)
checkNamedChildren(ref, "runeslice", "int32", runes, false)
client.EvaluateRequest("runeslice", 0, "repl")
got = client.ExpectEvaluateResponse(t)
ref = checkEvalIndexed(t, got, "[]int32 len: 4, cap: 4, [116,232,115,116]", hasChildren, 4, 1)
checkNamedChildren(ref, "runeslice", "int32", runes, true)
// bytearray
ref = checkVarExactIndexed(t, locals, -1, "bytearray", "bytearray", "[5]uint8 [116,195,168,115,116]", "[5]uint8", true, 5, 1)
checkNamedChildren(ref, "bytearray", "uint8", bytes, false)
client.EvaluateRequest("bytearray", 0, "hover")
got = client.ExpectEvaluateResponse(t)
ref = checkEvalIndexed(t, got, "[5]uint8 [116,195,168,115,116]", hasChildren, 5, 1)
checkNamedChildren(ref, "bytearray", "uint8", bytes, true)
// runearray
ref = checkVarExactIndexed(t, locals, -1, "runearray", "runearray", "[4]int32 [116,232,115,116]", "[4]int32", true, 4, 1)
checkNamedChildren(ref, "runearray", "int32", runes, false)
client.EvaluateRequest("runearray", 0, "watch")
got = client.ExpectEvaluateResponse(t)
ref = checkEvalIndexed(t, got, "[4]int32 [116,232,115,116]", hasChildren, 4, 1)
checkNamedChildren(ref, "runearray", "int32", runes, true)
// string feature is not available with user-defined byte types
ref = checkVarExactIndexed(t, locals, -1, "bytestypeslice", "bytestypeslice", "[]main.Byte len: 5, cap: 5, [116,195,168,115,116]", "[]main.Byte", true, 5, 1)
client.NamedVariablesRequest(ref)
namedchildren := client.ExpectVariablesResponse(t)
checkChildren(t, namedchildren, "bytestypeslice as string", 0)
ref = checkVarExactIndexed(t, locals, -1, "bytetypearray", "bytetypearray", "[5]main.Byte [116,195,168,115,116]", "[5]main.Byte", true, 5, 1)
client.NamedVariablesRequest(ref)
namedchildren = client.ExpectVariablesResponse(t)
checkChildren(t, namedchildren, "bytetypearray as string", 0)
},
disconnect: true,
}})
})
}
// TestGlobalScopeAndVariables launches the program with showGlobalVariables
// arg set, executes to a breakpoint in the main package and tests that global
// package main variables got loaded. It then steps into a function
// in another package and tests that globals scope got updated to those vars.
func TestGlobalScopeAndVariables(t *testing.T) {
runTest(t, "consts", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showGlobalVariables": true, "showRegisters": true,
})
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
// Stop at line 36
execute: func() {
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "main.main", 36, 1000, 3, 3)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals", localsScope)
checkScope(t, scopes, 1, "Globals (package main)", globalsScope)
checkScope(t, scopes, 2, "Registers", globalsScope+1)
client.VariablesRequest(globalsScope)
client.ExpectVariablesResponse(t)
// The program has no user-defined globals.
// Depending on the Go version, there might
// be some runtime globals (e.g. main..inittask)
// so testing for the total number is too fragile.
// Step into pkg.AnotherMethod()
client.StepInRequest(1)
client.ExpectStepInResponse(t)
client.ExpectStoppedEvent(t)
client.StackTraceRequest(1, 0, 20)
stack = client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "", 13, 1000, 4, 4)
client.ScopesRequest(1000)
scopes = client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals", localsScope)
checkScope(t, scopes, 1, "Globals (package github.com/go-delve/delve/_fixtures/internal/dir0/pkg)", globalsScope)
client.VariablesRequest(globalsScope)
globals := client.ExpectVariablesResponse(t)
checkChildren(t, globals, "Globals", 1)
ref := checkVarExact(t, globals, 0, "SomeVar", "github.com/go-delve/delve/_fixtures/internal/dir0/pkg.SomeVar", "github.com/go-delve/delve/_fixtures/internal/dir0/pkg.SomeType {X: 0}", "github.com/go-delve/delve/_fixtures/internal/dir0/pkg.SomeType", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
somevar := client.ExpectVariablesResponse(t)
checkChildren(t, somevar, "SomeVar", 1)
// TODO(polina): unlike main.p, this prefix won't work
checkVarExact(t, somevar, 0, "X", "github.com/go-delve/delve/_fixtures/internal/dir0/pkg.SomeVar.X", "0", "float64", noChildren)
}
},
disconnect: false,
}})
})
}
// TestRegisterScopeAndVariables launches the program with showRegisters
// arg set, executes to a breakpoint in the main package and tests that the registers
// got loaded. It then steps into a function in another package and tests that
// the registers were updated by checking PC.
func TestRegistersScopeAndVariables(t *testing.T) {
runTest(t, "consts", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showRegisters": true,
})
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
// Stop at line 36
execute: func() {
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "main.main", 36, 1000, 3, 3)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals", localsScope)
registersScope := localsScope + 1
checkScope(t, scopes, 1, "Registers", registersScope)
// Check that instructionPointer points to the InstructionPointerReference.
pc, err := getPC(t, client, 1)
if err != nil {
t.Error(pc)
}
client.VariablesRequest(registersScope)
vr := client.ExpectVariablesResponse(t)
if len(vr.Body.Variables) == 0 {
t.Fatal("no registers returned")
}
idx := findPcReg(vr.Body.Variables)
if idx < 0 {
t.Fatalf("got %#v, want a reg with instruction pointer", vr.Body.Variables)
}
pcReg := vr.Body.Variables[idx]
gotPc, err := strconv.ParseUint(pcReg.Value, 0, 64)
if err != nil {
t.Error(err)
}
name := strings.TrimSpace(pcReg.Name)
if gotPc != pc || pcReg.EvaluateName != fmt.Sprintf("_%s", strings.ToUpper(name)) {
t.Errorf("got %#v,\nwant Name=%s Value=%#x EvaluateName=%q", pcReg, name, pc, fmt.Sprintf("_%s", strings.ToUpper(name)))
}
// The program has no user-defined globals.
// Depending on the Go version, there might
// be some runtime globals (e.g. main..inittask)
// so testing for the total number is too fragile.
// Step into pkg.AnotherMethod()
client.StepInRequest(1)
client.ExpectStepInResponse(t)
client.ExpectStoppedEvent(t)
client.StackTraceRequest(1, 0, 20)
stack = client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "", 13, 1000, 4, 4)
client.ScopesRequest(1000)
scopes = client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals", localsScope)
checkScope(t, scopes, 1, "Registers", registersScope)
// Check that rip points to the InstructionPointerReference.
pc, err = getPC(t, client, 1)
if err != nil {
t.Error(pc)
}
client.VariablesRequest(registersScope)
vr = client.ExpectVariablesResponse(t)
if len(vr.Body.Variables) == 0 {
t.Fatal("no registers returned")
}
idx = findPcReg(vr.Body.Variables)
if idx < 0 {
t.Fatalf("got %#v, want a reg with instruction pointer", vr.Body.Variables)
}
pcReg = vr.Body.Variables[idx]
gotPc, err = strconv.ParseUint(pcReg.Value, 0, 64)
if err != nil {
t.Error(err)
}
if gotPc != pc || pcReg.EvaluateName != fmt.Sprintf("_%s", strings.ToUpper(name)) {
t.Errorf("got %#v,\nwant Name=%s Value=%#x EvaluateName=%q", pcReg, name, pc, fmt.Sprintf("_%s", strings.ToUpper(name)))
}
},
disconnect: false,
}})
})
}
func findPcReg(regs []dap.Variable) int {
for i, reg := range regs {
if isPcReg(reg) {
return i
}
}
return -1
}
func isPcReg(reg dap.Variable) bool {
pcRegNames := []string{"rip", "pc", "eip"}
for _, name := range pcRegNames {
if name == strings.TrimSpace(reg.Name) {
return true
}
}
return false
}
// TestShadowedVariables executes to a breakpoint and checks the shadowed
// variable is named correctly.
func TestShadowedVariables(t *testing.T) {
runTest(t, "testshadow", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showGlobalVariables": true,
})
},
// Breakpoints are set within the program
fixture.Source, []int{},
[]onBreakpoint{{
// Stop at line 13
execute: func() {
client.StackTraceRequest(1, 0, 20)
stack := client.ExpectStackTraceResponse(t)
checkStackFramesExact(t, stack, "main.main", 13, 1000, 3, 3)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
checkScope(t, scopes, 0, "Locals", localsScope)
checkScope(t, scopes, 1, "Globals (package main)", globalsScope)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkVarExact(t, locals, 0, "(a)", "a", "0", "int", !hasChildren)
checkVarExact(t, locals, 1, "a", "a", "1", "int", !hasChildren)
// Check that the non-shadowed of "a" is returned from evaluate request.
validateEvaluateName(t, client, locals, 1)
},
disconnect: false,
}})
})
}
// Tests that 'stackTraceDepth' from LaunchRequest is parsed and passed to
// stacktrace requests handlers.
func TestLaunchRequestWithStackTraceDepth(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
var stResp *dap.StackTraceResponse
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "stackTraceDepth": 1,
})
},
// Set breakpoints
fixture.Source, []int{8},
[]onBreakpoint{{ // Stop at line 8
execute: func() {
client.StackTraceRequest(1, 0, 0)
stResp = client.ExpectStackTraceResponse(t)
checkStackFramesHasMore(t, stResp, "main.Increment", 8, 1000, 1 /*returned*/, 2 /*available*/)
},
disconnect: false,
}})
})
}
type Breakpoint struct {
line int
path string
verified bool
msgPrefix string
}
func expectSetBreakpointsResponse(t *testing.T, client *daptest.Client, bps []Breakpoint) {
t.Helper()
checkSetBreakpointsResponse(t, bps, client.ExpectSetBreakpointsResponse(t))
}
func checkSetBreakpointsResponse(t *testing.T, bps []Breakpoint, got *dap.SetBreakpointsResponse) {
t.Helper()
checkBreakpoints(t, bps, got.Body.Breakpoints)
}
func checkBreakpoints(t *testing.T, bps []Breakpoint, breakpoints []dap.Breakpoint) {
t.Helper()
if len(breakpoints) != len(bps) {
t.Errorf("got %#v,\nwant len(Breakpoints)=%d", breakpoints, len(bps))
return
}
for i, bp := range breakpoints {
if bps[i].line < 0 && !bps[i].verified {
if bp.Verified != bps[i].verified || !stringContainsCaseInsensitive(bp.Message, bps[i].msgPrefix) {
t.Errorf("got breakpoints[%d] = %#v, \nwant %#v", i, bp, bps[i])
}
continue
}
if bp.Line != bps[i].line || bp.Verified != bps[i].verified || bp.Source.Path != bps[i].path ||
!strings.HasPrefix(bp.Message, bps[i].msgPrefix) {
t.Errorf("got breakpoints[%d] = %#v, \nwant %#v", i, bp, bps[i])
}
}
}
// TestSetBreakpoint executes to a breakpoint and tests different
// configurations of setBreakpoint requests.
func TestSetBreakpoint(t *testing.T) {
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{16}, // b main.main
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 16)
// Set two breakpoints at the next two lines in main
client.SetBreakpointsRequest(fixture.Source, []int{17, 18})
expectSetBreakpointsResponse(t, client, []Breakpoint{{17, fixture.Source, true, ""}, {18, fixture.Source, true, ""}})
// Clear 17, reset 18
client.SetBreakpointsRequest(fixture.Source, []int{18})
expectSetBreakpointsResponse(t, client, []Breakpoint{{18, fixture.Source, true, ""}})
// Skip 17, continue to 18
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.main", 18)
// Set another breakpoint inside the loop in loop(), twice to trigger error
client.SetBreakpointsRequest(fixture.Source, []int{8, 8})
expectSetBreakpointsResponse(t, client, []Breakpoint{{8, fixture.Source, true, ""}, {-1, "", false, "breakpoint already exists"}})
// Continue into the loop
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkVarExact(t, locals, 0, "i", "i", "0", "int", noChildren) // i == 0
// Edit the breakpoint to add a condition
client.SetBreakpointsRequestWithArgs(fixture.Source, []int{8}, map[int]string{8: "i == 3"}, nil, nil)
expectSetBreakpointsResponse(t, client, []Breakpoint{{8, fixture.Source, true, ""}})
// Continue until condition is hit
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
client.VariablesRequest(localsScope)
locals = client.ExpectVariablesResponse(t)
checkVarExact(t, locals, 0, "i", "i", "3", "int", noChildren) // i == 3
// Edit the breakpoint to remove a condition
client.SetBreakpointsRequestWithArgs(fixture.Source, []int{8}, map[int]string{8: ""}, nil, nil)
expectSetBreakpointsResponse(t, client, []Breakpoint{{8, fixture.Source, true, ""}})
// Continue for one more loop iteration
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
client.VariablesRequest(localsScope)
locals = client.ExpectVariablesResponse(t)
checkVarExact(t, locals, 0, "i", "i", "4", "int", noChildren) // i == 4
// Set at a line without a statement
client.SetBreakpointsRequest(fixture.Source, []int{1000})
expectSetBreakpointsResponse(t, client, []Breakpoint{{-1, "", false, "could not find statement"}}) // all cleared, none set
},
// The program has an infinite loop, so we must kill it by disconnecting.
disconnect: true,
}})
})
}
// TestSetInstructionBreakpoint executes to a breakpoint and tests different
// configurations of setInstructionBreakpoint requests.
func TestSetInstructionBreakpoint(t *testing.T) {
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{16}, // b main.main
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 16)
// Set two breakpoints in the loop
client.SetBreakpointsRequest(fixture.Source, []int{8, 9})
expectSetBreakpointsResponse(t, client, []Breakpoint{{8, fixture.Source, true, ""}, {9, fixture.Source, true, ""}})
// Continue to the two breakpoints and get the instructionPointerReference.
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
client.StackTraceRequest(1, 0, 1)
st := client.ExpectStackTraceResponse(t)
if len(st.Body.StackFrames) < 1 {
t.Fatalf("\ngot %#v\nwant len(stackframes) => 1", st)
}
pc8 := st.Body.StackFrames[0].InstructionPointerReference
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 9)
client.StackTraceRequest(1, 0, 1)
st = client.ExpectStackTraceResponse(t)
if len(st.Body.StackFrames) < 1 {
t.Fatalf("\ngot %#v\nwant len(stackframes) => 1", st)
}
pc9 := st.Body.StackFrames[0].InstructionPointerReference
// Clear the source breakpoints.
// TODO(suzmue): there is an existing issue that breakpoints with identical locations
// from different setBreakpoints, setFunctionBreakpoints, setInstructionBreakpoints
// requests will prevent subsequent ones from being set.
client.SetBreakpointsRequest(fixture.Source, []int{})
expectSetBreakpointsResponse(t, client, []Breakpoint{})
// Set the breakpoints using the instruction pointer references.
client.SetInstructionBreakpointsRequest([]dap.InstructionBreakpoint{{InstructionReference: pc8}, {InstructionReference: pc9}})
bps := client.ExpectSetInstructionBreakpointsResponse(t).Body.Breakpoints
checkBreakpoints(t, []Breakpoint{{line: 8, path: fixture.Source, verified: true}, {line: 9, path: fixture.Source, verified: true}}, bps)
// Continue to the two breakpoints and get the instructionPointerReference.
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 9)
// Remove the breakpoint on line 8 and continue.
client.SetInstructionBreakpointsRequest([]dap.InstructionBreakpoint{{InstructionReference: pc9}})
bps = client.ExpectSetInstructionBreakpointsResponse(t).Body.Breakpoints
checkBreakpoints(t, []Breakpoint{{line: 9, path: fixture.Source, verified: true}}, bps)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 9)
// Set two breakpoints and expect an error on the second one.
client.SetInstructionBreakpointsRequest([]dap.InstructionBreakpoint{{InstructionReference: pc8}, {InstructionReference: pc8}})
bps = client.ExpectSetInstructionBreakpointsResponse(t).Body.Breakpoints
checkBreakpoints(t, []Breakpoint{{line: 8, path: fixture.Source, verified: true}, {line: -1, path: "", verified: false, msgPrefix: "breakpoint already exists"}}, bps)
// Add a condition
client.SetInstructionBreakpointsRequest([]dap.InstructionBreakpoint{{InstructionReference: pc8, Condition: "i == 100"}})
bps = client.ExpectSetInstructionBreakpointsResponse(t).Body.Breakpoints
checkBreakpoints(t, []Breakpoint{{line: 8, path: fixture.Source, verified: true}}, bps)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkVarExact(t, locals, 0, "i", "i", "100", "int", noChildren) // i == 100
},
// The program has an infinite loop, so we must kill it by disconnecting.
disconnect: true,
}})
})
}
func TestPauseAtStop(t *testing.T) {
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{16},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 16)
client.SetBreakpointsRequest(fixture.Source, []int{6, 8})
expectSetBreakpointsResponse(t, client, []Breakpoint{{6, fixture.Source, true, ""}, {8, fixture.Source, true, ""}})
// Send a pause request while stopped on a cleared breakpoint.
client.PauseRequest(1)
client.ExpectPauseResponse(t)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 6)
// Send a pause request while stopped on a breakpoint.
client.PauseRequest(1)
client.ExpectPauseResponse(t)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "breakpoint" {
t.Errorf("got %#v, expected breakpoint", se)
}
checkStop(t, client, 1, "main.loop", 8)
// Send a pause request while stopped after stepping.
client.NextRequest(1)
client.ExpectNextResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 9)
client.PauseRequest(1)
client.ExpectPauseResponse(t)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
},
// The program has an infinite loop, so we must kill it by disconnecting.
disconnect: true,
}})
})
}
func checkHitBreakpointIds(t *testing.T, se *dap.StoppedEvent, reason string, id int) {
if se.Body.ThreadId != 1 || se.Body.Reason != reason || len(se.Body.HitBreakpointIds) != 1 || se.Body.HitBreakpointIds[0] != id {
t.Errorf("got %#v, want Reason=%q, ThreadId=1, HitBreakpointIds=[]int{%d}", se, reason, id)
}
}
// TestHitBreakpointIds executes to a breakpoint and tests that
// the breakpoint ids in the stopped event are correct.
func TestHitBreakpointIds(t *testing.T) {
runTest(t, "locationsprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{30}, // b main.main
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 30)
// Set two source breakpoints and two function breakpoints.
client.SetBreakpointsRequest(fixture.Source, []int{23, 33})
sourceBps := client.ExpectSetBreakpointsResponse(t).Body.Breakpoints
checkBreakpoints(t, []Breakpoint{{line: 23, path: fixture.Source, verified: true}, {line: 33, path: fixture.Source, verified: true}}, sourceBps)
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "anotherFunction"},
{Name: "anotherFunction:1"},
})
functionBps := client.ExpectSetFunctionBreakpointsResponse(t).Body.Breakpoints
checkBreakpoints(t, []Breakpoint{{line: 26, path: fixture.Source, verified: true}, {line: 27, path: fixture.Source, verified: true}}, functionBps)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se := client.ExpectStoppedEvent(t)
checkHitBreakpointIds(t, se, "breakpoint", sourceBps[1].Id)
checkStop(t, client, 1, "main.main", 33)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se = client.ExpectStoppedEvent(t)
checkHitBreakpointIds(t, se, "breakpoint", sourceBps[0].Id)
checkStop(t, client, 1, "main.(*SomeType).SomeFunction", 23)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se = client.ExpectStoppedEvent(t)
checkHitBreakpointIds(t, se, "function breakpoint", functionBps[0].Id)
checkStop(t, client, 1, "main.anotherFunction", 26)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se = client.ExpectStoppedEvent(t)
checkHitBreakpointIds(t, se, "function breakpoint", functionBps[1].Id)
checkStop(t, client, 1, "main.anotherFunction", 27)
},
disconnect: true,
}})
})
}
func stringContainsCaseInsensitive(got, want string) bool {
return strings.Contains(strings.ToLower(got), strings.ToLower(want))
}
// TestSetFunctionBreakpoints is inspired by service/test.TestClientServer_FindLocations.
func TestSetFunctionBreakpoints(t *testing.T) {
runTest(t, "locationsprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{30}, // b main.main
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 30)
type Breakpoint struct {
line int
sourceName string
verified bool
errMsg string
}
expectSetFunctionBreakpointsResponse := func(bps []Breakpoint) {
t.Helper()
got := client.ExpectSetFunctionBreakpointsResponse(t)
if len(got.Body.Breakpoints) != len(bps) {
t.Errorf("got %#v,\nwant len(Breakpoints)=%d", got, len(bps))
return
}
for i, bp := range got.Body.Breakpoints {
if bps[i].line < 0 && !bps[i].verified {
if bp.Verified != bps[i].verified || !stringContainsCaseInsensitive(bp.Message, bps[i].errMsg) {
t.Errorf("got breakpoints[%d] = %#v, \nwant %#v", i, bp, bps[i])
}
continue
}
// Some function breakpoints may be in packages that have been imported and we do not control, so
// we do not always want to check breakpoint lines.
if (bps[i].line >= 0 && bp.Line != bps[i].line) || bp.Verified != bps[i].verified || bp.Source.Name != bps[i].sourceName {
t.Errorf("got breakpoints[%d] = %#v, \nwant %#v", i, bp, bps[i])
}
}
}
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "anotherFunction"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{26, filepath.Base(fixture.Source), true, ""}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "main.anotherFunction"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{26, filepath.Base(fixture.Source), true, ""}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "SomeType.String"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "(*SomeType).String"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "main.SomeType.String"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "main.(*SomeType).String"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}})
// Test line offsets
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "main.anotherFunction:1"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{27, filepath.Base(fixture.Source), true, ""}})
// Test function names in imported package.
// Issue #275
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "io/ioutil.ReadFile"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, "ioutil.go", true, ""}})
// Issue #296
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "/io/ioutil.ReadFile"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, "ioutil.go", true, ""}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "ioutil.ReadFile"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, "ioutil.go", true, ""}})
// Function Breakpoint name also accepts breakpoints that are specified as file:line.
// TODO(suzmue): We could return an error, but it probably is not necessary since breakpoints,
// and function breakpoints come in with different requests.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: fmt.Sprintf("%s:14", fixture.Source)},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: fmt.Sprintf("%s:14", filepath.Base(fixture.Source))},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}})
// Expect error for ambiguous function name.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "String"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, "", false, "Location \"String\" ambiguous"}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "main.String"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, "", false, "Location \"main.String\" ambiguous"}})
// Expect error for function that does not exist.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "fakeFunction"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, "", false, "location \"fakeFunction\" not found"}})
// Expect error for negative line number.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "main.anotherFunction:-1"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, "", false, "line offset negative or not a number"}})
// Expect error when function name is regex.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: `/^.*String.*$/`},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, "", false, "breakpoint name \"/^.*String.*$/\" could not be parsed as a function"}})
// Expect error when function name is an offset.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "+1"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, filepath.Base(fixture.Source), false, "breakpoint name \"+1\" could not be parsed as a function"}})
// Expect error when function name is a line number.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "14"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, filepath.Base(fixture.Source), false, "breakpoint name \"14\" could not be parsed as a function"}})
// Expect error when function name is an address.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "*b"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, filepath.Base(fixture.Source), false, "breakpoint name \"*b\" could not be parsed as a function"}})
// Expect error when function name is a relative path.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: fmt.Sprintf(".%s%s:14", string(filepath.Separator), filepath.Base(fixture.Source))},
})
// This relative path could also be caught by the parser, so we should not match the error message.
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, filepath.Base(fixture.Source), false, ""}})
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: fmt.Sprintf("..%s%s:14", string(filepath.Separator), filepath.Base(fixture.Source))},
})
// This relative path could also be caught by the parser, so we should not match the error message.
expectSetFunctionBreakpointsResponse([]Breakpoint{{-1, filepath.Base(fixture.Source), false, ""}})
// Test multiple function breakpoints.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "SomeType.String"}, {Name: "anotherFunction"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}, {26, filepath.Base(fixture.Source), true, ""}})
// Test multiple breakpoints to the same location.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "SomeType.String"}, {Name: "(*SomeType).String"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}, {-1, "", false, "breakpoint exists"}})
// Set two breakpoints at SomeType.String and SomeType.SomeFunction.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "SomeType.String"}, {Name: "SomeType.SomeFunction"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{14, filepath.Base(fixture.Source), true, ""}, {22, filepath.Base(fixture.Source), true, ""}})
// Clear SomeType.String, reset SomeType.SomeFunction (SomeType.String is called before SomeType.SomeFunction).
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "SomeType.SomeFunction"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{22, filepath.Base(fixture.Source), true, ""}})
// Expect the next breakpoint to be at SomeType.SomeFunction.
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
if se := client.ExpectStoppedEvent(t); se.Body.Reason != "function breakpoint" || se.Body.ThreadId != 1 {
t.Errorf("got %#v, want Reason=\"function breakpoint\", ThreadId=1", se)
}
checkStop(t, client, 1, "main.(*SomeType).SomeFunction", 22)
// Set a breakpoint at the next line in the program.
client.SetBreakpointsRequest(fixture.Source, []int{23})
got := client.ExpectSetBreakpointsResponse(t)
if len(got.Body.Breakpoints) != 1 {
t.Errorf("got %#v,\nwant len(Breakpoints)=%d", got, 1)
return
}
bp := got.Body.Breakpoints[0]
if bp.Line != 23 || bp.Verified != true || bp.Source.Path != fixture.Source {
t.Errorf("got breakpoints[0] = %#v, \nwant Line=23 Verified=true Source.Path=%q", bp, fixture.Source)
}
// Set a function breakpoint, this should not clear the breakpoint that was set in the previous setBreakpoints request.
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{
{Name: "anotherFunction"},
})
expectSetFunctionBreakpointsResponse([]Breakpoint{{26, filepath.Base(fixture.Source), true, ""}})
// Expect the next breakpoint to be at line 23.
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
if se := client.ExpectStoppedEvent(t); se.Body.Reason != "breakpoint" || se.Body.ThreadId != 1 {
t.Errorf("got %#v, want Reason=\"breakpoint\", ThreadId=1", se)
}
checkStop(t, client, 1, "main.(*SomeType).SomeFunction", 23)
// Set a breakpoint, this should not clear the breakpoint that was set in the previous setFunctionBreakpoints request.
client.SetBreakpointsRequest(fixture.Source, []int{37})
got = client.ExpectSetBreakpointsResponse(t)
if len(got.Body.Breakpoints) != 1 {
t.Errorf("got %#v,\nwant len(Breakpoints)=%d", got, 1)
return
}
bp = got.Body.Breakpoints[0]
if bp.Line != 37 || bp.Verified != true || bp.Source.Path != fixture.Source {
t.Errorf("got breakpoints[0] = %#v, \nwant Line=23 Verified=true Source.Path=%q", bp, fixture.Source)
}
// Expect the next breakpoint to be at line anotherFunction.
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
if se := client.ExpectStoppedEvent(t); se.Body.Reason != "function breakpoint" || se.Body.ThreadId != 1 {
t.Errorf("got %#v, want Reason=\"function breakpoint\", ThreadId=1", se)
}
checkStop(t, client, 1, "main.anotherFunction", 26)
},
disconnect: true,
}})
})
}
// TestLogPoints executes to a breakpoint and tests that log points
// send OutputEvents and do not halt program execution.
func TestLogPoints(t *testing.T) {
runTest(t, "callme", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{23},
[]onBreakpoint{{
// Stop at line 23
execute: func() {
checkStop(t, client, 1, "main.main", 23)
bps := []int{6, 25, 27, 16}
logMessages := map[int]string{6: "in callme!", 16: "in callme2!"}
client.SetBreakpointsRequestWithArgs(fixture.Source, bps, nil, nil, logMessages)
client.ExpectSetBreakpointsResponse(t)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
for i := 0; i < 5; i++ {
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "breakpoint" || se.Body.ThreadId != 1 {
t.Errorf("got stopped event = %#v, \nwant Reason=\"breakpoint\" ThreadId=1", se)
}
checkStop(t, client, 1, "main.main", 25)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
checkLogMessage(t, client.ExpectOutputEvent(t), 1, "in callme!", fixture.Source, 6)
}
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "breakpoint" || se.Body.ThreadId != 1 {
t.Errorf("got stopped event = %#v, \nwant Reason=\"breakpoint\" ThreadId=1", se)
}
checkStop(t, client, 1, "main.main", 27)
client.NextRequest(1)
client.ExpectNextResponse(t)
checkLogMessage(t, client.ExpectOutputEvent(t), 1, "in callme2!", fixture.Source, 16)
se = client.ExpectStoppedEvent(t)
if se.Body.Reason != "step" || se.Body.ThreadId != 1 {
t.Errorf("got stopped event = %#v, \nwant Reason=\"step\" ThreadId=1", se)
}
checkStop(t, client, 1, "main.main", 28)
},
disconnect: true,
}})
})
}
func checkLogMessage(t *testing.T, oe *dap.OutputEvent, goid int, text, path string, line int) {
t.Helper()
prefix := "> [Go "
if goid >= 0 {
prefix += strconv.Itoa(goid) + "]"
}
if oe.Body.Category != "stdout" || !strings.HasPrefix(oe.Body.Output, prefix) || !strings.HasSuffix(oe.Body.Output, text+"\n") {
t.Errorf("got output event = %#v, \nwant Category=\"stdout\" Output=\"%s: %s\\n\"", oe, prefix, text)
}
if oe.Body.Line != line || oe.Body.Source.Path != path {
t.Errorf("got output event = %#v, \nwant Line=%d Source.Path=%s", oe, line, path)
}
}
// TestHaltPreventsAutoResume tests that a pause request issued while processing
// log messages will result in a real stop.
func TestHaltPreventsAutoResume(t *testing.T) {
runTest(t, "callme", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch", // Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{23},
[]onBreakpoint{{
execute: func() {
savedResumeOnce := resumeOnceAndCheckStop
defer func() {
resumeOnceAndCheckStop = savedResumeOnce
}()
checkStop(t, client, 1, "main.main", 23)
bps := []int{6, 25}
logMessages := map[int]string{6: "in callme!"}
client.SetBreakpointsRequestWithArgs(fixture.Source, bps, nil, nil, logMessages)
client.ExpectSetBreakpointsResponse(t)
for i := 0; i < 5; i++ {
// Reset the handler to the default behavior.
resumeOnceAndCheckStop = savedResumeOnce
// Expect a pause request while stopped not to interrupt continue.
client.PauseRequest(1)
client.ExpectPauseResponse(t)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "breakpoint" || se.Body.ThreadId != 1 {
t.Errorf("got stopped event = %#v, \nwant Reason=\"breakpoint\" ThreadId=1", se)
}
checkStop(t, client, 1, "main.main", 25)
pauseDoneChan := make(chan struct{}, 1)
outputDoneChan := make(chan struct{}, 1)
// Send a halt request when trying to resume the program after being
// interrupted. This should allow the log message to be processed,
// but keep the process from continuing beyond the line.
resumeOnceAndCheckStop = func(s *Session, command string, allowNextStateChange chan struct{}) (*api.DebuggerState, error) {
// This should trigger after the log message is sent, but before
// execution is resumed.
if command == api.DirectionCongruentContinue {
go func() {
<-outputDoneChan
defer close(pauseDoneChan)
client.PauseRequest(1)
client.ExpectPauseResponse(t)
}()
// Wait for the pause to be complete.
<-pauseDoneChan
}
return s.resumeOnceAndCheckStop(command, allowNextStateChange)
}
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
checkLogMessage(t, client.ExpectOutputEvent(t), 1, "in callme!", fixture.Source, 6)
// Signal that the output event has been received.
close(outputDoneChan)
// Wait for the pause to be complete.
<-pauseDoneChan
se = client.ExpectStoppedEvent(t)
if se.Body.Reason != "pause" {
t.Errorf("got stopped event = %#v, \nwant Reason=\"pause\"", se)
}
checkStop(t, client, 1, "main.callme", 6)
}
},
disconnect: true,
}})
})
}
// TestConcurrentBreakpointsLogPoints tests that a breakpoint set in the main
// goroutine is hit the correct number of times and log points set in the
// children goroutines produce the correct number of output events.
func TestConcurrentBreakpointsLogPoints(t *testing.T) {
if runtime.GOOS == "freebsd" {
t.SkipNow()
}
tests := []struct {
name string
fixture string
start int
breakpoints []int
}{
{
name: "source breakpoints",
fixture: "goroutinestackprog",
breakpoints: []int{23},
},
{
name: "hardcoded breakpoint",
fixture: "goroutinebreak",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
runTest(t, tt.fixture, func(client *daptest.Client, fixture protest.Fixture) {
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
client.ExpectInitializedEvent(t)
client.ExpectLaunchResponse(t)
bps := append([]int{8}, tt.breakpoints...)
logMessages := map[int]string{8: "hello"}
client.SetBreakpointsRequestWithArgs(fixture.Source, bps, nil, nil, logMessages)
client.ExpectSetBreakpointsResponse(t)
client.ConfigurationDoneRequest()
client.ExpectConfigurationDoneResponse(t)
// There may be up to 1 breakpoint and any number of log points that are
// hit concurrently. We should get a stopped event everytime the breakpoint
// is hit and an output event for each log point hit.
var oeCount, seCount int
for oeCount < 10 || seCount < 10 {
switch m := client.ExpectMessage(t).(type) {
case *dap.StoppedEvent:
if m.Body.Reason != "breakpoint" || !m.Body.AllThreadsStopped || m.Body.ThreadId != 1 {
t.Errorf("\ngot %#v\nwant Reason='breakpoint' AllThreadsStopped=true ThreadId=1", m)
}
seCount++
client.ContinueRequest(1)
case *dap.OutputEvent:
checkLogMessage(t, m, -1, "hello", fixture.Source, 8)
oeCount++
case *dap.ContinueResponse:
case *dap.TerminatedEvent:
t.Fatalf("\nexpected 10 output events and 10 stopped events, got %d output events and %d stopped events", oeCount, seCount)
default:
t.Fatalf("Unexpected message type: expect StoppedEvent, OutputEvent, or ContinueResponse, got %#v", m)
}
}
// TODO(suzmue): The dap server may identify some false
// positives for hard coded breakpoints, so there may still
// be more stopped events.
client.DisconnectRequestWithKillOption(true)
})
})
}
}
func TestSetBreakpointWhileRunning(t *testing.T) {
runTest(t, "integrationprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{16},
[]onBreakpoint{{
execute: func() {
// The program loops 3 times over lines 14-15-8-9-10-16
checkStop(t, client, 1, "main.main", 16) // Line that sleeps for 1 second
// We can set breakpoints while nexting
client.NextRequest(1)
client.ExpectNextResponse(t)
client.SetBreakpointsRequest(fixture.Source, []int{15}) // [16,] => [15,]
checkSetBreakpointsResponse(t, []Breakpoint{{15, fixture.Source, true, ""}}, client.ExpectSetBreakpointsResponse(t))
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "step" || !se.Body.AllThreadsStopped || se.Body.ThreadId != 1 {
t.Errorf("\ngot %#v\nwant Reason='step' AllThreadsStopped=true ThreadId=1", se)
}
checkStop(t, client, 1, "main.main", 14)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se = client.ExpectStoppedEvent(t)
if se.Body.Reason != "breakpoint" || !se.Body.AllThreadsStopped || se.Body.ThreadId != 1 {
t.Errorf("\ngot %#v\nwant Reason='breakpoint' AllThreadsStopped=true ThreadId=1", se)
}
checkStop(t, client, 1, "main.main", 15)
// We can set breakpoints while continuing
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.SetBreakpointsRequest(fixture.Source, []int{9}) // [15,] => [9,]
checkSetBreakpointsResponse(t, []Breakpoint{{9, fixture.Source, true, ""}}, client.ExpectSetBreakpointsResponse(t))
se = client.ExpectStoppedEvent(t)
if se.Body.Reason != "breakpoint" || !se.Body.AllThreadsStopped || se.Body.ThreadId != 1 {
t.Errorf("\ngot %#v\nwant Reason='breakpoint' AllThreadsStopped=true ThreadId=1", se)
}
checkStop(t, client, 1, "main.sayhi", 9)
},
disconnect: true,
}})
})
}
func TestSetFunctionBreakpointWhileRunning(t *testing.T) {
runTest(t, "integrationprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{16},
[]onBreakpoint{{
execute: func() {
// The program loops 3 times over lines 14-15-8-9-10-16
checkStop(t, client, 1, "main.main", 16) // Line that sleeps for 1 second
// We can set breakpoints while nexting
client.NextRequest(1)
client.ExpectNextResponse(t)
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{{Name: "main.sayhi"}}) // [16,] => [16, 8]
checkBreakpoints(t, []Breakpoint{{8, fixture.Source, true, ""}}, client.ExpectSetFunctionBreakpointsResponse(t).Body.Breakpoints)
client.SetBreakpointsRequest(fixture.Source, []int{}) // [16,8] => [8]
expectSetBreakpointsResponse(t, client, []Breakpoint{})
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "step" || !se.Body.AllThreadsStopped || se.Body.ThreadId != 1 {
t.Errorf("\ngot %#v\nwant Reason='step' AllThreadsStopped=true ThreadId=1", se)
}
checkStop(t, client, 1, "main.main", 14)
// Make sure we can hit the breakpoints.
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se = client.ExpectStoppedEvent(t)
if se.Body.Reason != "function breakpoint" || !se.Body.AllThreadsStopped || se.Body.ThreadId != 1 {
t.Errorf("\ngot %#v\nwant Reason='function breakpoint' AllThreadsStopped=true ThreadId=1", se)
}
checkStop(t, client, 1, "main.sayhi", 8)
// We can set breakpoints while continuing
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.SetFunctionBreakpointsRequest([]dap.FunctionBreakpoint{}) // [8,] => []
checkBreakpoints(t, []Breakpoint{}, client.ExpectSetFunctionBreakpointsResponse(t).Body.Breakpoints)
client.SetBreakpointsRequest(fixture.Source, []int{16}) // [] => [16]
expectSetBreakpointsResponse(t, client, []Breakpoint{{16, fixture.Source, true, ""}})
se = client.ExpectStoppedEvent(t)
if se.Body.Reason != "breakpoint" || !se.Body.AllThreadsStopped || se.Body.ThreadId != 1 {
t.Errorf("\ngot %#v\nwant Reason='breakpoint' AllThreadsStopped=true ThreadId=1", se)
}
checkStop(t, client, 1, "main.main", 16)
},
disconnect: true,
}})
})
}
func TestHitConditionBreakpoints(t *testing.T) {
runTest(t, "break", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{4},
[]onBreakpoint{{
execute: func() {
client.SetBreakpointsRequestWithArgs(fixture.Source, []int{7}, nil, map[int]string{7: "4"}, nil)
expectSetBreakpointsResponse(t, client, []Breakpoint{{7, fixture.Source, true, ""}})
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.main", 7)
// Check that we are stopped at the correct value of i.
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkVarExact(t, locals, 0, "i", "i", "4", "int", noChildren)
// Change the hit condition.
client.SetBreakpointsRequestWithArgs(fixture.Source, []int{7}, nil, map[int]string{7: "% 2"}, nil)
expectSetBreakpointsResponse(t, client, []Breakpoint{{7, fixture.Source, true, ""}})
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.main", 7)
// Check that we are stopped at the correct value of i.
client.VariablesRequest(localsScope)
locals = client.ExpectVariablesResponse(t)
checkVarExact(t, locals, 0, "i", "i", "6", "int", noChildren)
// Expect an error if an assignment is passed.
client.SetBreakpointsRequestWithArgs(fixture.Source, []int{7}, nil, map[int]string{7: "= 2"}, nil)
expectSetBreakpointsResponse(t, client, []Breakpoint{{-1, "", false, ""}})
// Change the hit condition.
client.SetBreakpointsRequestWithArgs(fixture.Source, []int{7}, nil, map[int]string{7: "< 8"}, nil)
expectSetBreakpointsResponse(t, client, []Breakpoint{{7, fixture.Source, true, ""}})
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.main", 7)
// Check that we are stopped at the correct value of i.
client.VariablesRequest(localsScope)
locals = client.ExpectVariablesResponse(t)
checkVarExact(t, locals, 0, "i", "i", "7", "int", noChildren)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectTerminatedEvent(t)
},
disconnect: false,
}})
})
}
// TestLaunchSubstitutePath sets a breakpoint using a path
// that does not exist and expects the substitutePath attribute
// in the launch configuration to take care of the mapping.
func TestLaunchSubstitutePath(t *testing.T) {
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
substitutePathTestHelper(t, fixture, client, "launch", map[string]interface{}{"mode": "exec", "program": fixture.Path})
})
}
// TestAttachSubstitutePath sets a breakpoint using a path
// that does not exist and expects the substitutePath attribute
// in the launch configuration to take care of the mapping.
func TestAttachSubstitutePath(t *testing.T) {
if runtime.GOOS == "freebsd" {
t.SkipNow()
}
if runtime.GOOS == "windows" {
t.Skip("test skipped on windows, see https://delve.beta.teamcity.com/project/Delve_windows for details")
}
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
cmd := execFixture(t, fixture)
substitutePathTestHelper(t, fixture, client, "attach", map[string]interface{}{"mode": "local", "processId": cmd.Process.Pid})
})
}
func substitutePathTestHelper(t *testing.T, fixture protest.Fixture, client *daptest.Client, request string, launchAttachConfig map[string]interface{}) {
t.Helper()
nonexistentDir := filepath.Join(string(filepath.Separator), "path", "that", "does", "not", "exist")
if runtime.GOOS == "windows" {
nonexistentDir = "C:" + nonexistentDir
}
launchAttachConfig["stopOnEntry"] = false
// The rules in 'substitutePath' will be applied as follows:
// - mapping paths from client to server:
// The first rule["from"] to match a prefix of 'path' will be applied:
// strings.Replace(path, rule["from"], rule["to"], 1)
// - mapping paths from server to client:
// The first rule["to"] to match a prefix of 'path' will be applied:
// strings.Replace(path, rule["to"], rule["from"], 1)
launchAttachConfig["substitutePath"] = []map[string]string{
{"from": nonexistentDir, "to": filepath.Dir(fixture.Source)},
// Since the path mappings are ordered, when converting from client path to
// server path, this mapping will not apply, because nonexistentDir appears in
// an earlier rule.
{"from": nonexistentDir, "to": "this_is_a_bad_path"},
// Since the path mappings are ordered, when converting from server path to
// client path, this mapping will not apply, because filepath.Dir(fixture.Source)
// appears in an earlier rule.
{"from": "this_is_a_bad_path", "to": filepath.Dir(fixture.Source)},
}
runDebugSessionWithBPs(t, client, request,
func() {
switch request {
case "attach":
client.AttachRequest(launchAttachConfig)
case "launch":
client.LaunchRequestWithArgs(launchAttachConfig)
default:
t.Fatalf("invalid request: %s", request)
}
},
// Set breakpoints
filepath.Join(nonexistentDir, "loopprog.go"), []int{8},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.loop", 8)
},
disconnect: true,
}})
}
// execFixture runs the binary fixture.Path and hooks up stdout and stderr
// to os.Stdout and os.Stderr.
func execFixture(t *testing.T, fixture protest.Fixture) *exec.Cmd {
t.Helper()
// TODO(polina): do I need to sanity check testBackend and runtime.GOOS?
cmd := exec.Command(fixture.Path)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Start(); err != nil {
t.Fatal(err)
}
return cmd
}
// TestWorkingDir executes to a breakpoint and tests that the specified
// working directory is the one used to run the program.
func TestWorkingDir(t *testing.T) {
runTest(t, "workdir", func(client *daptest.Client, fixture protest.Fixture) {
wd := os.TempDir()
// For Darwin `os.TempDir()` returns `/tmp` which is symlink to `/private/tmp`.
if runtime.GOOS == "darwin" {
wd = "/private/tmp"
}
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec",
"program": fixture.Path,
"stopOnEntry": false,
"cwd": wd,
})
},
// Set breakpoints
fixture.Source, []int{10}, // b main.main
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 10)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkChildren(t, locals, "Locals", 2)
for i := range locals.Body.Variables {
switch locals.Body.Variables[i].Name {
case "pwd":
checkVarExact(t, locals, i, "pwd", "pwd", fmt.Sprintf("%q", wd), "string", noChildren)
case "err":
checkVarExact(t, locals, i, "err", "err", "error nil", "error", noChildren)
}
}
},
disconnect: false,
}})
})
}
// checkEval is a helper for verifying the values within an EvaluateResponse.
// value - the value of the evaluated expression
// hasRef - true if the evaluated expression should have children and therefore a non-0 variable reference
// ref - reference to retrieve children of this evaluated expression (0 if none)
func checkEval(t *testing.T, got *dap.EvaluateResponse, value string, hasRef bool) (ref int) {
t.Helper()
if got.Body.Result != value || (got.Body.VariablesReference > 0) != hasRef {
t.Errorf("\ngot %#v\nwant Result=%q hasRef=%t", got, value, hasRef)
}
return got.Body.VariablesReference
}
// checkEvalIndexed is a helper for verifying the values within an EvaluateResponse.
// value - the value of the evaluated expression
// hasRef - true if the evaluated expression should have children and therefore a non-0 variable reference
// ref - reference to retrieve children of this evaluated expression (0 if none)
func checkEvalIndexed(t *testing.T, got *dap.EvaluateResponse, value string, hasRef bool, indexed, named int) (ref int) {
t.Helper()
if got.Body.Result != value || (got.Body.VariablesReference > 0) != hasRef || got.Body.IndexedVariables != indexed || got.Body.NamedVariables != named {
t.Errorf("\ngot %#v\nwant Result=%q hasRef=%t IndexedVariables=%d NamedVariables=%d", got, value, hasRef, indexed, named)
}
return got.Body.VariablesReference
}
func checkEvalRegex(t *testing.T, got *dap.EvaluateResponse, valueRegex string, hasRef bool) (ref int) {
t.Helper()
matched, _ := regexp.MatchString(valueRegex, got.Body.Result)
if !matched || (got.Body.VariablesReference > 0) != hasRef {
t.Errorf("\ngot %#v\nwant Result=%q hasRef=%t", got, valueRegex, hasRef)
}
return got.Body.VariablesReference
}
func TestEvaluateRequest(t *testing.T) {
runTest(t, "testvariables", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
fixture.Source, []int{}, // Breakpoint set in the program
[]onBreakpoint{{ // Stop at first breakpoint
execute: func() {
checkStop(t, client, 1, "main.foobar", 66)
// Variable lookup
client.EvaluateRequest("a2", 1000, "this context will be ignored")
got := client.ExpectEvaluateResponse(t)
checkEval(t, got, "6", noChildren)
client.EvaluateRequest("a5", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
ref := checkEval(t, got, "[]int len: 5, cap: 5, [1,2,3,4,5]", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
a5 := client.ExpectVariablesResponse(t)
checkChildren(t, a5, "a5", 5)
checkVarExact(t, a5, 0, "[0]", "(a5)[0]", "1", "int", noChildren)
checkVarExact(t, a5, 4, "[4]", "(a5)[4]", "5", "int", noChildren)
validateEvaluateName(t, client, a5, 0)
validateEvaluateName(t, client, a5, 4)
}
// Variable lookup that's not fully loaded
client.EvaluateRequest("ba", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEvalIndexed(t, got, "[]int len: 200, cap: 200, [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,...+136 more]", hasChildren, 200, 0)
// All (binary and unary) on basic types except <-, ++ and --
client.EvaluateRequest("1+1", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "2", noChildren)
// Comparison operators on any type
client.EvaluateRequest("1<2", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "true", noChildren)
// Type casts between numeric types
client.EvaluateRequest("int(2.3)", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "2", noChildren)
// Type casts of integer constants into any pointer type and vice versa
client.EvaluateRequest("(*int)(2)", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
ref = checkEvalRegex(t, got, `\*\(unreadable .+\)`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
val := client.ExpectVariablesResponse(t)
checkChildren(t, val, "*(*int)(2)", 1)
checkVarRegex(t, val, 0, "^$", `\(\*\(\(\*int\)\(2\)\)\)`, `\(unreadable .+\)`, "int", noChildren)
validateEvaluateName(t, client, val, 0)
}
// Type casts between string, []byte and []rune
client.EvaluateRequest("[]byte(\"ABC€\")", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEvalIndexed(t, got, "[]uint8 len: 6, cap: 6, [65,66,67,226,130,172]", noChildren, 6, 0)
// Struct member access (i.e. somevar.memberfield)
client.EvaluateRequest("ms.Nest.Level", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "1", noChildren)
// Slicing and indexing operators on arrays, slices and strings
client.EvaluateRequest("a5[4]", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "5", noChildren)
// Map access
client.EvaluateRequest("mp[1]", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
ref = checkEval(t, got, "interface {}(int) 42", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
expr := client.ExpectVariablesResponse(t)
checkChildren(t, expr, "mp[1]", 1)
checkVarExact(t, expr, 0, "data", "(mp[1]).(data)", "42", "int", noChildren)
validateEvaluateName(t, client, expr, 0)
}
// Pointer dereference
client.EvaluateRequest("*ms.Nest", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
ref = checkEvalRegex(t, got, `main\.Nest {Level: 1, Nest: \*main.Nest {Level: 2, Nest: \*\(\*main\.Nest\)\(0x[0-9a-f]+\)}}`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
expr := client.ExpectVariablesResponse(t)
checkChildren(t, expr, "*ms.Nest", 2)
checkVarExact(t, expr, 0, "Level", "(*ms.Nest).Level", "1", "int", noChildren)
validateEvaluateName(t, client, expr, 0)
}
// Calls to builtin functions: cap, len, complex, imag and real
client.EvaluateRequest("len(a5)", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "5", noChildren)
// Type assertion on interface variables (i.e. somevar.(concretetype))
client.EvaluateRequest("mp[1].(int)", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "42", noChildren)
},
disconnect: false,
}, { // Stop at second breakpoint
execute: func() {
checkStop(t, client, 1, "main.barfoo", 27)
// Top-most frame
client.EvaluateRequest("a1", 1000, "this context will be ignored")
got := client.ExpectEvaluateResponse(t)
checkEval(t, got, "\"bur\"", noChildren)
// No frame defaults to top-most frame
client.EvaluateRequest("a1", 0, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "\"bur\"", noChildren)
// Next frame
client.EvaluateRequest("a1", 1001, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "\"foofoofoofoofoofoo\"", noChildren)
// Next frame
client.EvaluateRequest("a1", 1002, "any context but watch")
erres := client.ExpectVisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: could not find symbol value for a1" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: could not find symbol value for a1\"", erres)
}
client.EvaluateRequest("a1", 1002, "watch")
erres = client.ExpectInvisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: could not find symbol value for a1" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: could not find symbol value for a1\"", erres)
}
client.EvaluateRequest("a1", 1002, "repl")
erres = client.ExpectInvisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: could not find symbol value for a1" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: could not find symbol value for a1\"", erres)
}
client.EvaluateRequest("a1", 1002, "hover")
erres = client.ExpectInvisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: could not find symbol value for a1" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: could not find symbol value for a1\"", erres)
}
client.EvaluateRequest("a1", 1002, "clipboard")
erres = client.ExpectVisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: could not find symbol value for a1" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: could not find symbol value for a1\"", erres)
}
},
disconnect: false,
}})
})
}
func formatConfig(depth int, showGlobals, showRegisters, hideSystemGoroutines bool, substitutePath [][2]string) string {
formatStr := `stackTraceDepth %d
showGlobalVariables %v
showRegisters %v
hideSystemGoroutines %v
substitutePath %v
`
return fmt.Sprintf(formatStr, depth, showGlobals, showRegisters, hideSystemGoroutines, substitutePath)
}
func TestEvaluateCommandRequest(t *testing.T) {
runTest(t, "testvariables", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
fixture.Source, []int{}, // Breakpoint set in the program
[]onBreakpoint{{ // Stop at first breakpoint
execute: func() {
checkStop(t, client, 1, "main.foobar", 66)
// Request help.
const dlvHelp = `The following commands are available:
help (alias: h) Prints the help message.
config Changes configuration parameters.
Type help followed by a command for full documentation.
`
client.EvaluateRequest("dlv help", 1000, "repl")
got := client.ExpectEvaluateResponse(t)
checkEval(t, got, dlvHelp, noChildren)
client.EvaluateRequest("dlv help config", 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, msgConfig, noChildren)
// Test config.
client.EvaluateRequest("dlv config -list", 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, formatConfig(50, false, false, false, [][2]string{}), noChildren)
// Read and modify showGlobalVariables.
client.EvaluateRequest("dlv config showGlobalVariables", 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "showGlobalVariables\tfalse\n", noChildren)
client.ScopesRequest(1000)
scopes := client.ExpectScopesResponse(t)
if len(scopes.Body.Scopes) > 1 {
t.Errorf("\ngot %#v\nwant len(scopes)=1 (Locals)", scopes)
}
checkScope(t, scopes, 0, "Locals", -1)
client.EvaluateRequest("dlv config showGlobalVariables true", 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "showGlobalVariables\ttrue\n\nUpdated", noChildren)
client.EvaluateRequest("dlv config -list", 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, formatConfig(50, true, false, false, [][2]string{}), noChildren)
client.ScopesRequest(1000)
scopes = client.ExpectScopesResponse(t)
if len(scopes.Body.Scopes) < 2 {
t.Errorf("\ngot %#v\nwant len(scopes)=2 (Locals & Globals)", scopes)
}
checkScope(t, scopes, 0, "Locals", -1)
checkScope(t, scopes, 1, "Globals (package main)", -1)
// Read and modify substitutePath.
client.EvaluateRequest("dlv config substitutePath", 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "substitutePath\t[]\n", noChildren)
client.EvaluateRequest(fmt.Sprintf("dlv config substitutePath %q %q", "my/client/path", "your/server/path"), 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "substitutePath\t[[my/client/path your/server/path]]\n\nUpdated", noChildren)
client.EvaluateRequest(fmt.Sprintf("dlv config substitutePath %q %q", "my/client/path", "new/your/server/path"), 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "substitutePath\t[[my/client/path new/your/server/path]]\n\nUpdated", noChildren)
client.EvaluateRequest(fmt.Sprintf("dlv config substitutePath %q", "my/client/path"), 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "substitutePath\t[]\n\nUpdated", noChildren)
// Test bad inputs.
client.EvaluateRequest("dlv help bad", 1000, "repl")
client.ExpectErrorResponse(t)
client.EvaluateRequest("dlv bad", 1000, "repl")
client.ExpectErrorResponse(t)
},
disconnect: true,
}})
})
}
// From testvariables2 fixture
const (
// As defined in the code
longstr = `"very long string 0123456789a0123456789b0123456789c0123456789d0123456789e0123456789f0123456789g012345678h90123456789i0123456789j0123456789"`
// Loaded with MaxStringLen=64
longstrLoaded64 = `"very long string 0123456789a0123456789b0123456789c0123456789d012...+73 more"`
longstrLoaded64re = `\"very long string 0123456789a0123456789b0123456789c0123456789d012\.\.\.\+73 more\"`
)
// TestVariableValueTruncation tests that in certain cases
// we truncate the loaded variable values to make display more user-friendly.
func TestVariableValueTruncation(t *testing.T) {
runTest(t, "testvariables2", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Breakpoint set within the program
fixture.Source, []int{},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", -1)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
// Compound variable values may be truncated
m1Full := `map\[string\]main\.astruct \[(\"[A-Za-z]+\": {A: [0-9]+, B: [0-9]+}, )+,\.\.\.\+2 more\]`
m1Part := `map\[string\]main\.astruct \[(\"[A-Za-z]+\": {A: [0-9]+, B: [0-9]+}, )+.+\.\.\.`
// In variable responses
checkVarRegex(t, locals, -1, "m1", "m1", m1Part, `map\[string\]main\.astruct`, hasChildren)
// In evaluate responses (select contexts only)
tests := []struct {
context string
want string
}{
{"", m1Part},
{"watch", m1Part},
{"repl", m1Part},
{"hover", m1Part},
{"variables", m1Full}, // used for copy
{"clipboard", m1Full}, // used for copy
{"somethingelse", m1Part},
}
for _, tc := range tests {
t.Run(tc.context, func(t *testing.T) {
client.EvaluateRequest("m1", 0, tc.context)
checkEvalRegex(t, client.ExpectEvaluateResponse(t), tc.want, hasChildren)
})
}
// Compound map keys may be truncated even further
// As the keys are always inside of a map container,
// this applies to variables requests only, not evalute requests.
// key - compound, value - scalar (inlined key:value display) => truncate key if too long
ref := checkVarExact(t, locals, -1, "m5", "m5", "map[main.C]int [{s: "+longstr+"}: 1, ]", "map[main.C]int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
// Key format: <truncated>... @<address>
checkVarRegex(t, client.ExpectVariablesResponse(t), 1, `main\.C {s: "very long string 0123456789.+\.\.\. @ 0x[0-9a-f]+`, `m5\[\(\*\(\*"main\.C"\)\(0x[0-9a-f]+\)\)\]`, "1", `int`, hasChildren)
}
// key - scalar, value - scalar (inlined key:value display) => key not truncated
ref = checkVarExact(t, locals, -1, "m6", "m6", "map[string]int ["+longstr+": 123, ]", "map[string]int", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
checkVarExact(t, client.ExpectVariablesResponse(t), 1, longstr, `m6[`+longstr+`]`, "123", "string: int", noChildren)
}
// key - compound, value - compound (array-like display) => key not truncated
ref = checkVarExact(t, locals, -1, "m7", "m7", "map[main.C]main.C [{s: "+longstr+"}: {s: \"hello\"}, ]", "map[main.C]main.C", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
m7 := client.ExpectVariablesResponse(t)
checkVarRegex(t, m7, 1, "[key 0]", `\(\*\(\*\"main\.C\"\)\(0x[0-9a-f]+\)\)`, `main\.C {s: `+longstr+`}`, `main\.C`, hasChildren)
}
},
disconnect: true,
}})
})
}
// TestVariableLoadingOfLongStrings tests that different string loading limits
// apply that depending on the context.
func TestVariableLoadingOfLongStrings(t *testing.T) {
protest.MustSupportFunctionCalls(t, testBackend)
runTest(t, "longstrings", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Breakpoint set within the program
fixture.Source, []int{},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", -1)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
// Limits vary for evaluate requests with different contexts
tests := []struct {
context string
limit int
}{
{"", DefaultLoadConfig.MaxStringLen},
{"watch", DefaultLoadConfig.MaxStringLen},
{"repl", maxSingleStringLen},
{"hover", maxSingleStringLen},
{"variables", maxSingleStringLen},
{"clipboard", maxSingleStringLen},
{"somethingelse", DefaultLoadConfig.MaxStringLen},
}
for _, tc := range tests {
t.Run(tc.context, func(t *testing.T) {
// Long string by itself (limits vary)
client.EvaluateRequest("s4097", 0, tc.context)
want := fmt.Sprintf(`"x+\.\.\.\+%d more"`, 4097-tc.limit)
checkEvalRegex(t, client.ExpectEvaluateResponse(t), want, noChildren)
// Evaluated container variables return values with minimally loaded
// strings, which are further truncated for displaying, so we
// can't test for loading limit except in contexts where an untruncated
// value is returned.
client.EvaluateRequest("&s4097", 0, tc.context)
switch tc.context {
case "variables", "clipboard":
want = fmt.Sprintf(`\*"x+\.\.\.\+%d more`, 4097-DefaultLoadConfig.MaxStringLen)
default:
want = fmt.Sprintf(`\*"x{%d}\.\.\.`, maxVarValueLen-2)
}
checkEvalRegex(t, client.ExpectEvaluateResponse(t), want, hasChildren)
})
}
// Long strings returned from calls are subject to a different limit,
// same limit regardless of context
for _, context := range []string{"", "watch", "repl", "variables", "hover", "clipboard", "somethingelse"} {
t.Run(context, func(t *testing.T) {
client.EvaluateRequest(`call buildString(4097)`, 1000, context)
want := fmt.Sprintf(`"x+\.\.\.\+%d more"`, 4097-maxStringLenInCallRetVars)
got := client.ExpectEvaluateResponse(t)
checkEvalRegex(t, got, want, hasChildren)
})
}
// Variables requests use the most conservative loading limit
checkVarRegex(t, locals, -1, "s513", "s513", `"x{512}\.\.\.\+1 more"`, "string", noChildren)
// Container variables are subject to additional stricter value truncation that drops +more part
checkVarRegex(t, locals, -1, "nested", "nested", `map\[int\]string \[513: \"x+\.\.\.`, "string", hasChildren)
},
disconnect: true,
}})
})
}
func TestEvaluateCallRequest(t *testing.T) {
protest.MustSupportFunctionCalls(t, testBackend)
runTest(t, "fncall", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
fixture.Source, []int{88},
[]onBreakpoint{{ // Stop in makeclos()
execute: func() {
checkStop(t, client, 1, "main.makeclos", 88)
// Topmost frame: both types of expressions should work
client.EvaluateRequest("callstacktrace", 1000, "this context will be ignored")
client.ExpectEvaluateResponse(t)
client.EvaluateRequest("call callstacktrace()", 1000, "this context will be ignored")
client.ExpectEvaluateResponse(t)
// Next frame: only non-call expressions will work
client.EvaluateRequest("callstacktrace", 1001, "this context will be ignored")
client.ExpectEvaluateResponse(t)
client.EvaluateRequest("call callstacktrace()", 1001, "not watch")
erres := client.ExpectVisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: call is only supported with topmost stack frame" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: call is only supported with topmost stack frame\"", erres)
}
// A call can stop on a breakpoint
client.EvaluateRequest("call callbreak()", 1000, "not watch")
s := client.ExpectStoppedEvent(t)
if s.Body.Reason != "hardcoded breakpoint" {
t.Errorf("\ngot %#v\nwant Reason=\"hardcoded breakpoint\"", s)
}
erres = client.ExpectVisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: call stopped" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: call stopped\"", erres)
}
// A call during a call causes an error
client.EvaluateRequest("call callstacktrace()", 1000, "not watch")
erres = client.ExpectVisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: cannot call function while another function call is already in progress" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: cannot call function while another function call is already in progress\"", erres)
}
// Complete the call and get back to original breakpoint in makeclos()
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.makeclos", 88)
// Inject a call for the same function that is stopped at breakpoint:
// it might stop at the exact same breakpoint on the same goroutine,
// but we should still detect that its an injected call that stopped
// and not the return to the original point of injection after it
// completed.
client.EvaluateRequest("call makeclos(nil)", 1000, "not watch")
stopped := client.ExpectStoppedEvent(t)
erres = client.ExpectVisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: call stopped" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: call stopped\"", erres)
}
checkStop(t, client, stopped.Body.ThreadId, "main.makeclos", 88)
// Complete the call and get back to original breakpoint in makeclos()
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.makeclos", 88)
},
disconnect: false,
}, { // Stop at runtime breakpoint
execute: func() {
checkStop(t, client, 1, "main.main", -1)
// No return values
client.EvaluateRequest("call call0(1, 2)", 1000, "this context will be ignored")
got := client.ExpectEvaluateResponse(t)
checkEval(t, got, "", noChildren)
// One unnamed return value
client.EvaluateRequest("call call1(one, two)", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
ref := checkEval(t, got, "3", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
rv := client.ExpectVariablesResponse(t)
checkChildren(t, rv, "rv", 1)
checkVarExact(t, rv, 0, "~r2", "", "3", "int", noChildren)
}
// One named return value
// Panic doesn't panic, but instead returns the error as a named return variable
client.EvaluateRequest("call callpanic()", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
ref = checkEval(t, got, `interface {}(string) "callpanic panicked"`, hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
rv := client.ExpectVariablesResponse(t)
checkChildren(t, rv, "rv", 1)
ref = checkVarExact(t, rv, 0, "~panic", "", `interface {}(string) "callpanic panicked"`, "interface {}", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
p := client.ExpectVariablesResponse(t)
checkChildren(t, p, "~panic", 1)
checkVarExact(t, p, 0, "data", "", "\"callpanic panicked\"", "string", noChildren)
}
}
// Multiple return values
client.EvaluateRequest("call call2(one, two)", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
ref = checkEval(t, got, "1, 2", hasChildren)
if ref > 0 {
client.VariablesRequest(ref)
rvs := client.ExpectVariablesResponse(t)
checkChildren(t, rvs, "rvs", 2)
checkVarExact(t, rvs, 0, "~r2", "", "1", "int", noChildren)
checkVarExact(t, rvs, 1, "~r3", "", "2", "int", noChildren)
}
// No frame defaults to top-most frame
client.EvaluateRequest("call call1(one, two)", 0, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "3", hasChildren)
// Extra spaces don't matter
client.EvaluateRequest(" call call1(one, one) ", 0, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "2", hasChildren)
// Just 'call', even with extra space, is treated as {expression}
client.EvaluateRequest("call ", 1000, "watch")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "\"this is a variable named `call`\"", noChildren)
// Call error
client.EvaluateRequest("call call1(one)", 1000, "watch")
erres := client.ExpectInvisibleErrorResponse(t)
if erres.Body.Error.Format != "Unable to evaluate expression: not enough arguments" {
t.Errorf("\ngot %#v\nwant Format=\"Unable to evaluate expression: not enough arguments\"", erres)
}
// Assignment - expect no error, but no return value.
client.EvaluateRequest("call one = two", 1000, "this context will be ignored")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "", noChildren)
// Check one=two was applied.
client.EvaluateRequest("one", 1000, "repl")
got = client.ExpectEvaluateResponse(t)
checkEval(t, got, "2", noChildren)
// Call can exit.
client.EvaluateRequest("call callexit()", 1000, "this context will be ignored")
client.ExpectTerminatedEvent(t)
if res := client.ExpectVisibleErrorResponse(t); !strings.Contains(res.Body.Error.Format, "terminated") {
t.Errorf("\ngot %#v\nwant Format=.*terminated.*", res)
}
},
terminated: true,
disconnect: true,
}})
})
}
func TestNextAndStep(t *testing.T) {
runTest(t, "testinline", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{11},
[]onBreakpoint{{ // Stop at line 11
execute: func() {
checkStop(t, client, 1, "main.initialize", 11)
expectStop := func(fun string, line int) {
t.Helper()
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "step" || se.Body.ThreadId != 1 || !se.Body.AllThreadsStopped {
t.Errorf("got %#v, want Reason=\"step\", ThreadId=1, AllThreadsStopped=true", se)
}
checkStop(t, client, 1, fun, line)
}
client.StepOutRequest(1)
client.ExpectStepOutResponse(t)
expectStop("main.main", 18)
client.NextRequest(1)
client.ExpectNextResponse(t)
expectStop("main.main", 19)
client.StepInRequest(1)
client.ExpectStepInResponse(t)
expectStop("main.inlineThis", 5)
client.NextRequest(-1000)
client.ExpectNextResponse(t)
if se := client.ExpectStoppedEvent(t); se.Body.Reason != "error" || se.Body.Text != "unknown goroutine -1000" {
t.Errorf("got %#v, want Reason=\"error\", Text=\"unknown goroutine -1000\"", se)
}
checkStop(t, client, 1, "main.inlineThis", 5)
},
disconnect: false,
}})
})
}
func TestHardCodedBreakpoints(t *testing.T) {
runTest(t, "consts", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
fixture.Source, []int{28},
[]onBreakpoint{{ // Stop at line 28
execute: func() {
checkStop(t, client, 1, "main.main", 28)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
se := client.ExpectStoppedEvent(t)
if se.Body.ThreadId != 1 || se.Body.Reason != "breakpoint" {
t.Errorf("\ngot %#v\nwant ThreadId=1 Reason=\"breakpoint\"", se)
}
},
disconnect: false,
}})
})
}
// TestStepInstruction executes to a breakpoint and tests stepping
// a single instruction
func TestStepInstruction(t *testing.T) {
runTest(t, "testvariables", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{32}, // b main.foobar
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.foobar", 32)
pc, err := getPC(t, client, 1)
if err != nil {
t.Fatal(err)
}
// The exact instructions may change due to compiler changes,
// but we want to make sure that all of our instructions are
// instantiating variables, since these should not include
// jumps.
verifyExpectedLocation := func() {
client.StackTraceRequest(1, 0, 20)
st := client.ExpectStackTraceResponse(t)
if len(st.Body.StackFrames) < 1 {
t.Errorf("\ngot %#v\nwant len(stackframes) => 1", st)
} else {
// There is a hardcoded breakpoint on line 32. All of the
// steps should be completed before that line.
if st.Body.StackFrames[0].Line < 32 {
t.Errorf("\ngot %#v\nwant Line<32", st)
}
if st.Body.StackFrames[0].Name != "main.foobar" {
t.Errorf("\ngot %#v\nwant Name=\"main.foobar\"", st)
}
}
}
// Next instruction.
client.NextInstructionRequest(1)
client.ExpectNextResponse(t)
client.ExpectStoppedEvent(t)
verifyExpectedLocation()
nextPC, err := getPC(t, client, 1)
if err != nil {
t.Fatal(err)
}
if nextPC <= pc {
t.Errorf("got %#x, expected InstructionPointerReference>%#x", nextPC, pc)
}
// StepIn instruction.
pc = nextPC
client.StepInInstructionRequest(1)
client.ExpectStepInResponse(t)
client.ExpectStoppedEvent(t)
verifyExpectedLocation()
nextPC, err = getPC(t, client, 1)
if err != nil {
t.Fatal(err)
}
if nextPC <= pc {
t.Errorf("got %#x, expected InstructionPointerReference>%#x", nextPC, pc)
}
// StepOut Instruction.
pc = nextPC
client.StepOutInstructionRequest(1)
client.ExpectStepOutResponse(t)
client.ExpectStoppedEvent(t)
verifyExpectedLocation()
nextPC, err = getPC(t, client, 1)
if err != nil {
t.Fatal(err)
}
if nextPC <= pc {
t.Errorf("got %#x, expected InstructionPointerReference>%#x", nextPC, pc)
}
},
disconnect: true,
}})
})
}
func getPC(t *testing.T, client *daptest.Client, threadId int) (uint64, error) {
client.StackTraceRequest(threadId, 0, 1)
st := client.ExpectStackTraceResponse(t)
if len(st.Body.StackFrames) < 1 {
t.Fatalf("\ngot %#v\nwant len(stackframes) => 1", st)
}
return strconv.ParseUint(st.Body.StackFrames[0].InstructionPointerReference, 0, 64)
}
func TestNextParked(t *testing.T) {
if runtime.GOOS == "freebsd" {
t.SkipNow()
}
runTest(t, "parallel_next", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{15},
[]onBreakpoint{{ // Stop at line 15
execute: func() {
if goroutineId := testStepParkedHelper(t, client, fixture); goroutineId >= 0 {
client.NextRequest(goroutineId)
client.ExpectNextResponse(t)
se := client.ExpectStoppedEvent(t)
if se.Body.ThreadId != goroutineId {
t.Fatalf("Next did not continue on the selected goroutine, expected %d got %d", goroutineId, se.Body.ThreadId)
}
}
},
disconnect: false,
}})
})
}
func testStepParkedHelper(t *testing.T, client *daptest.Client, fixture protest.Fixture) int {
t.Helper()
// Set a breakpoint at main.sayHi
client.SetBreakpointsRequest(fixture.Source, []int{8})
client.ExpectSetBreakpointsResponse(t)
var goroutineId = -1
for goroutineId < 0 {
client.ContinueRequest(1)
contResp := client.ExpectMessage(t)
switch contResp.(type) {
case *dap.ContinueResponse:
// ok
case *dap.TerminatedEvent:
return -1
}
se := client.ExpectStoppedEvent(t)
client.ThreadsRequest()
threads := client.ExpectThreadsResponse(t)
// Search for a parked goroutine that we know for sure will have to be
// resumed before the program can exit. This is a parked goroutine that:
// 1. is executing main.sayhi
// 2. hasn't called wg.Done yet
// 3. is not the currently selected goroutine
for _, g := range threads.Body.Threads {
// We do not need to check the thread that the program
// is currently stopped on.
if g.Id == se.Body.ThreadId {
continue
}
client.StackTraceRequest(g.Id, 0, 5)
frames := client.ExpectStackTraceResponse(t)
for _, frame := range frames.Body.StackFrames {
// line 11 is the line where wg.Done is called
if frame.Name == "main.sayhi" && frame.Line < 11 {
goroutineId = g.Id
break
}
}
if goroutineId >= 0 {
break
}
}
}
// Clear all breakpoints.
client.SetBreakpointsRequest(fixture.Source, []int{})
client.ExpectSetBreakpointsResponse(t)
return goroutineId
}
// TestStepOutPreservesGoroutine is inspired by proc_test.TestStepOutPreservesGoroutine
// and checks that StepOut preserves the currently selected goroutine.
func TestStepOutPreservesGoroutine(t *testing.T) {
// Checks that StepOut preserves the currently selected goroutine.
if runtime.GOOS == "freebsd" {
t.SkipNow()
}
rand.Seed(time.Now().Unix())
runTest(t, "issue2113", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{25},
[]onBreakpoint{{ // Stop at line 25
execute: func() {
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
// The program contains runtime.Breakpoint()
se := client.ExpectStoppedEvent(t)
client.ThreadsRequest()
gs := client.ExpectThreadsResponse(t)
candg := []int{}
bestg := []int{}
for _, g := range gs.Body.Threads {
// We do not need to check the thread that the program
// is currently stopped on.
if g.Id == se.Body.ThreadId {
continue
}
client.StackTraceRequest(g.Id, 0, 20)
frames := client.ExpectStackTraceResponse(t)
for _, frame := range frames.Body.StackFrames {
if frame.Name == "main.coroutine" {
candg = append(candg, g.Id)
if strings.HasPrefix(frames.Body.StackFrames[0].Name, "runtime.") {
bestg = append(bestg, g.Id)
}
break
}
}
}
var goroutineId int
if len(bestg) > 0 {
goroutineId = bestg[rand.Intn(len(bestg))]
t.Logf("selected goroutine %d (best)\n", goroutineId)
} else if len(candg) > 0 {
goroutineId = candg[rand.Intn(len(candg))]
t.Logf("selected goroutine %d\n", goroutineId)
}
if goroutineId != 0 {
client.StepOutRequest(goroutineId)
client.ExpectStepOutResponse(t)
} else {
client.ContinueRequest(-1)
client.ExpectContinueResponse(t)
}
switch e := client.ExpectMessage(t).(type) {
case *dap.StoppedEvent:
if e.Body.ThreadId != goroutineId {
t.Fatalf("StepOut did not continue on the selected goroutine, expected %d got %d", goroutineId, e.Body.ThreadId)
}
case *dap.TerminatedEvent:
t.Logf("program terminated")
default:
t.Fatalf("Unexpected event type: expect stopped or terminated event, got %#v", e)
}
},
disconnect: false,
}})
})
}
func checkStopOnNextWhileNextingError(t *testing.T, client *daptest.Client, threadID int) {
t.Helper()
oe := client.ExpectOutputEvent(t)
if oe.Body.Category != "console" || oe.Body.Output != fmt.Sprintf("invalid command: %s\n", BetterNextWhileNextingError) {
t.Errorf("\ngot %#v\nwant Category=\"console\" Output=\"invalid command: %s\\n\"", oe, BetterNextWhileNextingError)
}
se := client.ExpectStoppedEvent(t)
if se.Body.ThreadId != threadID || se.Body.Reason != "exception" || se.Body.Description != "invalid command" || se.Body.Text != BetterNextWhileNextingError {
t.Errorf("\ngot %#v\nwant ThreadId=%d Reason=\"exception\" Description=\"invalid command\" Text=\"%s\"", se, threadID, BetterNextWhileNextingError)
}
client.ExceptionInfoRequest(1)
eInfo := client.ExpectExceptionInfoResponse(t)
if eInfo.Body.ExceptionId != "invalid command" || eInfo.Body.Description != BetterNextWhileNextingError {
t.Errorf("\ngot %#v\nwant ExceptionId=\"invalid command\" Text=\"%s\"", eInfo, BetterNextWhileNextingError)
}
}
func TestBadAccess(t *testing.T) {
if runtime.GOOS != "darwin" || testBackend != "lldb" {
t.Skip("not applicable")
}
runTest(t, "issue2078", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{4},
[]onBreakpoint{{ // Stop at line 4
execute: func() {
checkStop(t, client, 1, "main.main", 4)
expectStoppedOnError := func(errorPrefix string) {
t.Helper()
se := client.ExpectStoppedEvent(t)
if se.Body.ThreadId != 1 || se.Body.Reason != "exception" || se.Body.Description != "runtime error" || !strings.HasPrefix(se.Body.Text, errorPrefix) {
t.Errorf("\ngot %#v\nwant ThreadId=1 Reason=\"exception\" Description=\"runtime error\" Text=\"%s\"", se, errorPrefix)
}
client.ExceptionInfoRequest(1)
eInfo := client.ExpectExceptionInfoResponse(t)
if eInfo.Body.ExceptionId != "runtime error" || !strings.HasPrefix(eInfo.Body.Description, errorPrefix) {
t.Errorf("\ngot %#v\nwant ExceptionId=\"runtime error\" Text=\"%s\"", eInfo, errorPrefix)
}
}
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
expectStoppedOnError("invalid memory address or nil pointer dereference")
client.NextRequest(1)
client.ExpectNextResponse(t)
expectStoppedOnError("invalid memory address or nil pointer dereference")
client.NextRequest(1)
client.ExpectNextResponse(t)
checkStopOnNextWhileNextingError(t, client, 1)
client.StepInRequest(1)
client.ExpectStepInResponse(t)
checkStopOnNextWhileNextingError(t, client, 1)
client.StepOutRequest(1)
client.ExpectStepOutResponse(t)
checkStopOnNextWhileNextingError(t, client, 1)
},
disconnect: true,
}})
})
}
// TestNextWhileNexting is inspired by command_test.TestIssue387 and tests
// that when 'next' is interrupted by a 'breakpoint', calling 'next'
// again will produce an error with a helpful message, and 'continue'
// will resume the program.
func TestNextWhileNexting(t *testing.T) {
if runtime.GOOS == "freebsd" {
t.Skip("test is not valid on FreeBSD")
}
// a breakpoint triggering during a 'next' operation will interrupt 'next''
// Unlike the test for the terminal package, we cannot be certain
// of the number of breakpoints we expect to hit, since multiple
// breakpoints being hit at the same time is not supported in DAP stopped
// events.
runTest(t, "issue387", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{15},
[]onBreakpoint{{ // Stop at line 15
execute: func() {
checkStop(t, client, 1, "main.main", 15)
client.SetBreakpointsRequest(fixture.Source, []int{8})
client.ExpectSetBreakpointsResponse(t)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
bpSe := client.ExpectStoppedEvent(t)
threadID := bpSe.Body.ThreadId
checkStop(t, client, threadID, "main.dostuff", 8)
for pos := 9; pos < 11; pos++ {
client.NextRequest(threadID)
client.ExpectNextResponse(t)
stepInProgress := true
for stepInProgress {
m := client.ExpectStoppedEvent(t)
switch m.Body.Reason {
case "step":
if !m.Body.AllThreadsStopped {
t.Errorf("got %#v, want Reason=\"step\", AllThreadsStopped=true", m)
}
checkStop(t, client, m.Body.ThreadId, "main.dostuff", pos)
stepInProgress = false
case "breakpoint":
if !m.Body.AllThreadsStopped {
t.Errorf("got %#v, want Reason=\"breakpoint\", AllThreadsStopped=true", m)
}
if stepInProgress {
// We encountered a breakpoint on a different thread. We should have to resume execution
// using continue.
oe := client.ExpectOutputEvent(t)
if oe.Body.Category != "console" || !strings.Contains(oe.Body.Output, "Step interrupted by a breakpoint.") {
t.Errorf("\ngot %#v\nwant Category=\"console\" Output=\"Step interrupted by a breakpoint.\"", oe)
}
client.NextRequest(m.Body.ThreadId)
client.ExpectNextResponse(t)
checkStopOnNextWhileNextingError(t, client, m.Body.ThreadId)
// Continue since we have not finished the step request.
client.ContinueRequest(threadID)
client.ExpectContinueResponse(t)
} else {
checkStop(t, client, m.Body.ThreadId, "main.dostuff", 8)
// Switch to stepping on this thread instead.
pos = 8
threadID = m.Body.ThreadId
}
default:
t.Fatalf("got %#v, want StoppedEvent on step or breakpoint", m)
}
}
}
},
disconnect: true,
}})
})
}
func TestPanicBreakpointOnContinue(t *testing.T) {
runTest(t, "panic", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{5},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 5)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
text := "\"BOOM!\""
se := client.ExpectStoppedEvent(t)
if se.Body.ThreadId != 1 || se.Body.Reason != "exception" || se.Body.Description != "panic" || se.Body.Text != text {
t.Errorf("\ngot %#v\nwant ThreadId=1 Reason=\"exception\" Description=\"panic\" Text=%q", se, text)
}
client.ExceptionInfoRequest(1)
eInfo := client.ExpectExceptionInfoResponse(t)
if eInfo.Body.ExceptionId != "panic" || eInfo.Body.Description != text {
t.Errorf("\ngot %#v\nwant ExceptionId=\"panic\" Description=%q", eInfo, text)
}
client.StackTraceRequest(se.Body.ThreadId, 0, 20)
st := client.ExpectStackTraceResponse(t)
for i, frame := range st.Body.StackFrames {
if strings.HasPrefix(frame.Name, "runtime.") {
if frame.Source.PresentationHint != "deemphasize" {
t.Errorf("\ngot Body.StackFrames[%d]=%#v\nwant Source.PresentationHint=\"deemphasize\"", i, frame)
}
} else if frame.Source.PresentationHint != "" {
t.Errorf("\ngot Body.StackFrames[%d]=%#v\nwant Source.PresentationHint=\"\"", i, frame)
}
}
},
disconnect: true,
}})
})
}
func TestPanicBreakpointOnNext(t *testing.T) {
if !goversion.VersionAfterOrEqual(runtime.Version(), 1, 14) {
// In Go 1.13, 'next' will step into the defer in the runtime
// main function, instead of the next line in the main program.
t.SkipNow()
}
runTest(t, "panic", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{5},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 5)
client.NextRequest(1)
client.ExpectNextResponse(t)
text := "\"BOOM!\""
se := client.ExpectStoppedEvent(t)
if se.Body.ThreadId != 1 || se.Body.Reason != "exception" || se.Body.Description != "panic" || se.Body.Text != text {
t.Errorf("\ngot %#v\nwant ThreadId=1 Reason=\"exception\" Description=\"panic\" Text=%q", se, text)
}
client.ExceptionInfoRequest(1)
eInfo := client.ExpectExceptionInfoResponse(t)
if eInfo.Body.ExceptionId != "panic" || eInfo.Body.Description != text {
t.Errorf("\ngot %#v\nwant ExceptionId=\"panic\" Description=%q", eInfo, text)
}
},
disconnect: true,
}})
})
}
func TestFatalThrowBreakpoint(t *testing.T) {
runTest(t, "fatalerror", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{3},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 3)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
var text string
// This does not work for Go 1.16.
ver, _ := goversion.Parse(runtime.Version())
if ver.Major != 1 || ver.Minor != 16 {
text = "\"go of nil func value\""
}
se := client.ExpectStoppedEvent(t)
if se.Body.ThreadId != 1 || se.Body.Reason != "exception" || se.Body.Description != "fatal error" || se.Body.Text != text {
t.Errorf("\ngot %#v\nwant ThreadId=1 Reason=\"exception\" Description=\"fatal error\" Text=%q", se, text)
}
// This does not work for Go 1.16.
errorPrefix := text
if errorPrefix == "" {
errorPrefix = "Throw reason unavailable, see https://github.com/golang/go/issues/46425"
}
client.ExceptionInfoRequest(1)
eInfo := client.ExpectExceptionInfoResponse(t)
if eInfo.Body.ExceptionId != "fatal error" || !strings.HasPrefix(eInfo.Body.Description, errorPrefix) {
t.Errorf("\ngot %#v\nwant ExceptionId=\"runtime error\" Text=%s", eInfo, errorPrefix)
}
},
disconnect: true,
}})
})
runTest(t, "testdeadlock", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{3},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 3)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
// This does not work for Go 1.16 so skip by detecting versions before or after 1.16.
var text string
if !goversion.VersionAfterOrEqual(runtime.Version(), 1, 16) || goversion.VersionAfterOrEqual(runtime.Version(), 1, 17) {
text = "\"all goroutines are asleep - deadlock!\""
}
se := client.ExpectStoppedEvent(t)
if se.Body.Reason != "exception" || se.Body.Description != "fatal error" || se.Body.Text != text {
t.Errorf("\ngot %#v\nwant Reason=\"exception\" Description=\"fatal error\" Text=%q", se, text)
}
// TODO(suzmue): Get the exception info for the thread and check the description
// includes "all goroutines are asleep - deadlock!".
// Stopped events with no selected goroutines need to be supported to test deadlock.
},
disconnect: true,
}})
})
}
// checkStop covers the standard sequence of requests issued by
// a client at a breakpoint or another non-terminal stop event.
// The details have been tested by other tests,
// so this is just a sanity check.
// Skips line check if line is -1.
func checkStop(t *testing.T, client *daptest.Client, thread int, fname string, line int) {
t.Helper()
client.ThreadsRequest()
client.ExpectThreadsResponse(t)
client.CheckStopLocation(t, thread, fname, line)
client.ScopesRequest(1000)
client.ExpectScopesResponse(t)
client.VariablesRequest(localsScope)
client.ExpectVariablesResponse(t)
}
// onBreakpoint specifies what the test harness should simulate at
// a stopped breakpoint. First execute() is to be called to test
// specified editor-driven or user-driven requests. Then if
// disconnect is true, the test harness will abort the program
// execution. Otherwise, a continue will be issued and the
// program will continue to the next breakpoint or termination.
// If terminated is true, we expect requests at this breakpoint
// to result in termination.
type onBreakpoint struct {
execute func()
disconnect bool
terminated bool
}
// runDebugSessionWithBPs is a helper for executing the common init and shutdown
// sequences for a program that does not stop on entry
// while specifying breakpoints and unique launch/attach criteria via parameters.
// cmd - "launch" or "attach"
// cmdRequest - a function that sends a launch or attach request,
// so the test author has full control of its arguments.
// Note that he rest of the test sequence assumes that
// stopOnEntry is false.
// source - source file path, needed to set breakpoints, "" if none to be set.
// breakpoints - list of lines, where breakpoints are to be set
// onBPs - list of test sequences to execute at each of the set breakpoints.
func runDebugSessionWithBPs(t *testing.T, client *daptest.Client, cmd string, cmdRequest func(), source string, breakpoints []int, onBPs []onBreakpoint) {
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
cmdRequest()
client.ExpectInitializedEvent(t)
if cmd == "launch" {
client.ExpectLaunchResponse(t)
} else if cmd == "attach" {
client.ExpectAttachResponse(t)
} else {
panic("expected launch or attach command")
}
if source != "" {
client.SetBreakpointsRequest(source, breakpoints)
client.ExpectSetBreakpointsResponse(t)
}
// Skip no-op setExceptionBreakpoints
client.ConfigurationDoneRequest()
client.ExpectConfigurationDoneResponse(t)
// Program automatically continues to breakpoint or completion
// TODO(polina): See if we can make this more like withTestProcessArgs in proc_test:
// a single function pointer gets called here and then if it wants to continue it calls
// client.ContinueRequest/client.ExpectContinueResponse/client.ExpectStoppedEvent
// (possibly using a helper function).
for _, onBP := range onBPs {
client.ExpectStoppedEvent(t)
onBP.execute()
if onBP.disconnect {
client.DisconnectRequestWithKillOption(true)
if onBP.terminated {
client.ExpectOutputEventProcessExited(t, 0)
client.ExpectOutputEventDetaching(t)
} else {
client.ExpectOutputEventDetachingKill(t)
}
client.ExpectDisconnectResponse(t)
client.ExpectTerminatedEvent(t)
return
}
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
// "Continue" is triggered after the response is sent
}
if cmd == "launch" { // Let the program run to completion
client.ExpectTerminatedEvent(t)
}
client.DisconnectRequestWithKillOption(true)
if cmd == "launch" {
client.ExpectOutputEventProcessExited(t, 0)
client.ExpectOutputEventDetaching(t)
} else if cmd == "attach" {
client.ExpectOutputEventDetachingKill(t)
}
client.ExpectDisconnectResponse(t)
client.ExpectTerminatedEvent(t)
}
// runDebugSession is a helper for executing the standard init and shutdown
// sequences for a program that does not stop on entry
// while specifying unique launch criteria via parameters.
func runDebugSession(t *testing.T, client *daptest.Client, cmd string, cmdRequest func()) {
runDebugSessionWithBPs(t, client, cmd, cmdRequest, "", nil, nil)
}
func TestLaunchDebugRequest(t *testing.T) {
rescueStderr := os.Stderr
r, w, _ := os.Pipe()
os.Stderr = w
done := make(chan struct{})
var err []byte
go func() {
err, _ = ioutil.ReadAll(r)
t.Log(string(err))
close(done)
}()
tmpBin := "__tmpBin"
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
// We reuse the harness that builds, but ignore the built binary,
// only relying on the source to be built in response to LaunchRequest.
runDebugSession(t, client, "launch", func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "debug", "program": fixture.Source, "output": tmpBin})
})
})
// Wait for the test to finish to capture all stderr
time.Sleep(100 * time.Millisecond)
w.Close()
<-done
os.Stderr = rescueStderr
rmErrRe, _ := regexp.Compile(`could not remove .*\n`)
rmErr := rmErrRe.FindString(string(err))
if rmErr != "" {
// On Windows, a file in use cannot be removed, resulting in "Access is denied".
// When the process exits, Delve releases the binary by calling
// BinaryInfo.Close(), but it appears that it is still in use (by Windows?)
// shortly after. gobuild.Remove has a delay to address this, but
// to avoid any test flakiness we guard against this failure here as well.
if runtime.GOOS != "windows" || !stringContainsCaseInsensitive(rmErr, "Access is denied") {
t.Fatalf("Binary removal failure:\n%s\n", rmErr)
}
} else {
tmpBin = cleanExeName(tmpBin)
// We did not get a removal error, but did we even try to remove before exiting?
// Confirm that the binary did get removed.
if _, err := os.Stat(tmpBin); err == nil || os.IsExist(err) {
t.Fatal("Failed to remove temp binary", tmpBin)
}
}
}
// TestLaunchRequestDefaults tests defaults for launch attribute that are explicit in other tests.
func TestLaunchRequestDefaults(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSession(t, client, "launch", func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "" /*"debug" by default*/, "program": fixture.Source, "output": "__mybin"})
})
})
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSession(t, client, "launch", func() {
client.LaunchRequestWithArgs(map[string]interface{}{
/*"mode":"debug" by default*/ "program": fixture.Source, "output": "__mybin"})
})
})
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSession(t, client, "launch", func() {
// Use the temporary output binary.
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "debug", "program": fixture.Source})
})
})
}
// TestLaunchRequestOutputPath verifies that relative output binary path
// is mapped to server's, not target's, working directory.
func TestLaunchRequestOutputPath(t *testing.T) {
runTest(t, "testargs", func(client *daptest.Client, fixture protest.Fixture) {
inrel := "__somebin"
wd, _ := os.Getwd()
outabs := cleanExeName(filepath.Join(wd, inrel))
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "debug", "program": fixture.Source, "output": inrel,
"cwd": filepath.Dir(wd)})
},
// Set breakpoints
fixture.Source, []int{12},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, 1, "main.main", 12)
client.EvaluateRequest("os.Args[0]", 1000, "repl")
checkEval(t, client.ExpectEvaluateResponse(t), fmt.Sprintf("%q", outabs), noChildren)
},
disconnect: true,
}})
})
}
func TestExitNonZeroStatus(t *testing.T) {
runTest(t, "pr1055", func(client *daptest.Client, fixture protest.Fixture) {
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
client.ExpectInitializedEvent(t)
client.ExpectLaunchResponse(t)
client.ConfigurationDoneRequest()
client.ExpectConfigurationDoneResponse(t)
client.ExpectTerminatedEvent(t)
client.DisconnectRequest()
// Check that the process exit status is 2.
oep := client.ExpectOutputEventProcessExited(t, 2)
if oep.Body.Category != "console" {
t.Errorf("\ngot %#v\nwant Category='console'", oep)
}
oed := client.ExpectOutputEventDetaching(t)
if oed.Body.Category != "console" {
t.Errorf("\ngot %#v\nwant Category='console'", oed)
}
client.ExpectDisconnectResponse(t)
client.ExpectTerminatedEvent(t)
})
}
func TestNoDebug_GoodExitStatus(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
runNoDebugSession(t, client, func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"noDebug": true, "mode": "debug", "program": fixture.Source, "output": "__mybin"})
}, 0)
})
}
func TestNoDebug_BadExitStatus(t *testing.T) {
runTest(t, "issue1101", func(client *daptest.Client, fixture protest.Fixture) {
runNoDebugSession(t, client, func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"noDebug": true, "mode": "exec", "program": fixture.Path})
}, 2)
})
}
// runNoDebugSession tests the session started with noDebug=true runs
// to completion and logs termination status.
func runNoDebugSession(t *testing.T, client *daptest.Client, launchRequest func(), exitStatus int) {
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
launchRequest()
// no initialized event.
// noDebug mode applies only to "launch" requests.
client.ExpectLaunchResponse(t)
client.ExpectOutputEventProcessExited(t, exitStatus)
client.ExpectTerminatedEvent(t)
client.DisconnectRequestWithKillOption(true)
client.ExpectDisconnectResponse(t)
client.ExpectTerminatedEvent(t)
}
func TestNoDebug_AcceptNoRequestsButDisconnect(t *testing.T) {
runTest(t, "http_server", func(client *daptest.Client, fixture protest.Fixture) {
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
client.LaunchRequestWithArgs(map[string]interface{}{
"noDebug": true, "mode": "exec", "program": fixture.Path})
client.ExpectLaunchResponse(t)
// Anything other than disconnect should get rejected
var ExpectNoDebugError = func(cmd string) {
er := client.ExpectErrorResponse(t)
if er.Body.Error.Format != fmt.Sprintf("noDebug mode: unable to process '%s' request", cmd) {
t.Errorf("\ngot %#v\nwant 'noDebug mode: unable to process '%s' request'", er, cmd)
}
}
client.SetBreakpointsRequest(fixture.Source, []int{8})
ExpectNoDebugError("setBreakpoints")
client.SetFunctionBreakpointsRequest(nil)
ExpectNoDebugError("setFunctionBreakpoints")
client.PauseRequest(1)
ExpectNoDebugError("pause")
client.RestartRequest()
client.ExpectUnsupportedCommandErrorResponse(t)
// Disconnect request is ok
client.DisconnectRequestWithKillOption(true)
client.ExpectOutputEventTerminating(t)
client.ExpectOutputEventRegex(t, fmt.Sprintf(daptest.ProcessExited, "(-1|1)"))
client.ExpectTerminatedEvent(t)
client.ExpectDisconnectResponse(t)
client.ExpectTerminatedEvent(t)
})
}
func TestLaunchRequestWithRelativeBuildPath(t *testing.T) {
serverStopped := make(chan struct{})
client := startDAPServerWithClient(t, serverStopped)
defer client.Close()
fixdir := protest.FindFixturesDir()
if filepath.IsAbs(fixdir) {
t.Fatal("this test requires relative program path")
}
program := filepath.Join(protest.FindFixturesDir(), "buildtest")
// Use different working dir for target than dlv.
// Program path will be interpreted relative to dlv's.
dlvwd, _ := os.Getwd()
runDebugSession(t, client, "launch", func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "debug", "program": program, "cwd": filepath.Dir(dlvwd)})
})
<-serverStopped
}
func TestLaunchRequestWithRelativeExecPath(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
symlink := "./__thisexe"
err := os.Symlink(fixture.Path, symlink)
defer os.Remove(symlink)
if err != nil {
t.Fatal("unable to create relative symlink:", err)
}
runDebugSession(t, client, "launch", func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": symlink})
})
})
}
func TestLaunchTestRequest(t *testing.T) {
orgWD, _ := os.Getwd()
fixtures := protest.FindFixturesDir() // relative to current working directory.
absoluteFixturesDir, _ := filepath.Abs(fixtures)
absolutePkgDir, _ := filepath.Abs(filepath.Join(fixtures, "buildtest"))
testFile := filepath.Join(absolutePkgDir, "main_test.go")
for _, tc := range []struct {
name string
dlvWD string
launchArgs map[string]interface{}
wantWD string
}{{
name: "default",
launchArgs: map[string]interface{}{
"mode": "test", "program": absolutePkgDir,
},
wantWD: absolutePkgDir,
}, {
name: "output",
launchArgs: map[string]interface{}{
"mode": "test", "program": absolutePkgDir, "output": "test.out",
},
wantWD: absolutePkgDir,
}, {
name: "dlvCwd",
launchArgs: map[string]interface{}{
"mode": "test", "program": absolutePkgDir, "dlvCwd": ".",
},
wantWD: absolutePkgDir,
}, {
name: "dlvCwd2",
launchArgs: map[string]interface{}{
"mode": "test", "program": ".", "dlvCwd": absolutePkgDir,
},
wantWD: absolutePkgDir,
}, {
name: "cwd",
launchArgs: map[string]interface{}{
"mode": "test", "program": absolutePkgDir, "cwd": fixtures, // fixtures is relative to the current working directory.
},
wantWD: absoluteFixturesDir,
}, {
name: "dlv runs outside of module",
dlvWD: os.TempDir(),
launchArgs: map[string]interface{}{
"mode": "test", "program": absolutePkgDir, "dlvCwd": absoluteFixturesDir,
},
wantWD: absolutePkgDir,
}, {
name: "dlv builds in dlvCwd but runs in cwd",
dlvWD: fixtures,
launchArgs: map[string]interface{}{
"mode": "test", "program": absolutePkgDir, "dlvCwd": absolutePkgDir, "cwd": "..", // relative to dlvCwd.
},
wantWD: absoluteFixturesDir,
}} {
t.Run(tc.name, func(t *testing.T) {
// Some test cases with dlvCwd or dlvWD change process working directory.
defer os.Chdir(orgWD)
if tc.dlvWD != "" {
os.Chdir(tc.dlvWD)
defer os.Chdir(orgWD)
}
serverStopped := make(chan struct{})
client := startDAPServerWithClient(t, serverStopped)
defer client.Close()
runDebugSessionWithBPs(t, client, "launch",
func() { // Launch
client.LaunchRequestWithArgs(tc.launchArgs)
},
testFile, []int{14},
[]onBreakpoint{{
execute: func() {
checkStop(t, client, -1, "github.com/go-delve/delve/_fixtures/buildtest.TestCurrentDirectory", 14)
client.VariablesRequest(1001) // Locals
locals := client.ExpectVariablesResponse(t)
checkChildren(t, locals, "Locals", 1)
for i := range locals.Body.Variables {
switch locals.Body.Variables[i].Name {
case "wd": // The test's working directory is the package directory by default.
checkVarExact(t, locals, i, "wd", "wd", fmt.Sprintf("%q", tc.wantWD), "string", noChildren)
}
}
}}})
<-serverStopped
})
}
}
// Tests that 'args' from LaunchRequest are parsed and passed to the target
// program. The target program exits without an error on success, and
// panics on error, causing an unexpected StoppedEvent instead of
// Terminated Event.
func TestLaunchRequestWithArgs(t *testing.T) {
runTest(t, "testargs", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSession(t, client, "launch", func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path,
"args": []string{"test", "pass flag"}})
})
})
}
// Tests that 'buildFlags' from LaunchRequest are parsed and passed to the
// compiler. The target program exits without an error on success, and
// panics on error, causing an unexpected StoppedEvent instead of
// TerminatedEvent.
func TestLaunchRequestWithBuildFlags(t *testing.T) {
runTest(t, "buildflagtest", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSession(t, client, "launch", func() {
// We reuse the harness that builds, but ignore the built binary,
// only relying on the source to be built in response to LaunchRequest.
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "debug", "program": fixture.Source, "output": "__mybin",
"buildFlags": "-ldflags '-X main.Hello=World'"})
})
})
}
func TestAttachRequest(t *testing.T) {
if runtime.GOOS == "freebsd" {
t.SkipNow()
}
if runtime.GOOS == "windows" {
t.Skip("test skipped on windows, see https://delve.beta.teamcity.com/project/Delve_windows for details")
}
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
// Start the program to attach to
cmd := execFixture(t, fixture)
runDebugSessionWithBPs(t, client, "attach",
// Attach
func() {
client.AttachRequest(map[string]interface{}{
/*"mode": "local" by default*/ "processId": cmd.Process.Pid, "stopOnEntry": false})
},
// Set breakpoints
fixture.Source, []int{8},
[]onBreakpoint{{
// Stop at line 8
execute: func() {
checkStop(t, client, 1, "main.loop", 8)
client.VariablesRequest(localsScope)
locals := client.ExpectVariablesResponse(t)
checkChildren(t, locals, "Locals", 1)
checkVarRegex(t, locals, 0, "i", "i", "[0-9]+", "int", noChildren)
},
disconnect: true,
}})
})
}
// Since we are in async mode while running, we might receive thee messages after pause request
// in either order.
func expectPauseResponseAndStoppedEvent(t *testing.T, client *daptest.Client) {
t.Helper()
for i := 0; i < 2; i++ {
msg := client.ExpectMessage(t)
switch m := msg.(type) {
case *dap.StoppedEvent:
if m.Body.Reason != "pause" || m.Body.ThreadId != 0 && m.Body.ThreadId != 1 {
t.Errorf("\ngot %#v\nwant ThreadId=0/1 Reason='pause'", m)
}
case *dap.PauseResponse:
default:
t.Fatalf("got %#v, want StoppedEvent or PauseResponse", m)
}
}
}
func TestPauseAndContinue(t *testing.T) {
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{6},
[]onBreakpoint{{
execute: func() {
client.CheckStopLocation(t, 1, "main.loop", 6)
// Continue resumes all goroutines, so thread id is ignored
client.ContinueRequest(12345)
client.ExpectContinueResponse(t)
time.Sleep(time.Second)
// Halt pauses all goroutines, so thread id is ignored
client.PauseRequest(56789)
expectPauseResponseAndStoppedEvent(t, client)
// Pause will be a no-op at a pause: there will be no additional stopped events
client.PauseRequest(1)
client.ExpectPauseResponse(t)
},
// The program has an infinite loop, so we must kill it by disconnecting.
disconnect: true,
}})
})
}
func TestUnupportedCommandResponses(t *testing.T) {
var got *dap.ErrorResponse
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
seqCnt := 1
expectUnsupportedCommand := func(cmd string) {
t.Helper()
got = client.ExpectUnsupportedCommandErrorResponse(t)
if got.RequestSeq != seqCnt || got.Command != cmd {
t.Errorf("\ngot %#v\nwant RequestSeq=%d Command=%s", got, seqCnt, cmd)
}
seqCnt++
}
client.RestartFrameRequest()
expectUnsupportedCommand("restartFrame")
client.GotoRequest()
expectUnsupportedCommand("goto")
client.SourceRequest()
expectUnsupportedCommand("source")
client.TerminateThreadsRequest()
expectUnsupportedCommand("terminateThreads")
client.StepInTargetsRequest()
expectUnsupportedCommand("stepInTargets")
client.GotoTargetsRequest()
expectUnsupportedCommand("gotoTargets")
client.CompletionsRequest()
expectUnsupportedCommand("completions")
client.DataBreakpointInfoRequest()
expectUnsupportedCommand("dataBreakpointInfo")
client.SetDataBreakpointsRequest()
expectUnsupportedCommand("setDataBreakpoints")
client.BreakpointLocationsRequest()
expectUnsupportedCommand("breakpointLocations")
client.ModulesRequest()
expectUnsupportedCommand("modules")
client.DisconnectRequest()
client.ExpectDisconnectResponse(t)
})
}
type helperForSetVariable struct {
t *testing.T
c *daptest.Client
}
func (h *helperForSetVariable) expectSetVariable(ref int, name, value string) {
h.t.Helper()
h.expectSetVariable0(ref, name, value, false)
}
func (h *helperForSetVariable) failSetVariable(ref int, name, value, wantErrInfo string) {
h.t.Helper()
h.failSetVariable0(ref, name, value, wantErrInfo, false)
}
func (h *helperForSetVariable) failSetVariableAndStop(ref int, name, value, wantErrInfo string) {
h.t.Helper()
h.failSetVariable0(ref, name, value, wantErrInfo, true)
}
func (h *helperForSetVariable) evaluate(expr, want string, hasRef bool) {
h.t.Helper()
h.c.EvaluateRequest(expr, 1000, "whatever")
got := h.c.ExpectEvaluateResponse(h.t)
checkEval(h.t, got, want, hasRef)
}
func (h *helperForSetVariable) evaluateRegex(expr, want string, hasRef bool) {
h.t.Helper()
h.c.EvaluateRequest(expr, 1000, "whatever")
got := h.c.ExpectEvaluateResponse(h.t)
checkEvalRegex(h.t, got, want, hasRef)
}
func (h *helperForSetVariable) expectSetVariable0(ref int, name, value string, wantStop bool) {
h.t.Helper()
h.c.SetVariableRequest(ref, name, value)
if wantStop {
h.c.ExpectStoppedEvent(h.t)
}
if got, want := h.c.ExpectSetVariableResponse(h.t), value; got.Success != true || got.Body.Value != want {
h.t.Errorf("SetVariableRequest(%v, %v)=%#v, want {Success=true, Body.Value=%q", name, value, got, want)
}
}
func (h *helperForSetVariable) failSetVariable0(ref int, name, value, wantErrInfo string, wantStop bool) {
h.t.Helper()
h.c.SetVariableRequest(ref, name, value)
if wantStop {
h.c.ExpectStoppedEvent(h.t)
}
resp := h.c.ExpectErrorResponse(h.t)
if got := resp.Body.Error.Format; !stringContainsCaseInsensitive(got, wantErrInfo) {
h.t.Errorf("got %#v, want error string containing %v", got, wantErrInfo)
}
}
func (h *helperForSetVariable) variables(ref int) *dap.VariablesResponse {
h.t.Helper()
h.c.VariablesRequest(ref)
return h.c.ExpectVariablesResponse(h.t)
}
// TestSetVariable tests SetVariable features that do not need function call support.
func TestSetVariable(t *testing.T) {
runTest(t, "testvariables", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showGlobalVariables": true,
})
},
fixture.Source, []int{}, // breakpoints are set within the program.
[]onBreakpoint{{
execute: func() {
tester := &helperForSetVariable{t, client}
startLineno := 66 // after runtime.Breakpoint
if runtime.GOOS == "windows" && goversion.VersionAfterOrEqual(runtime.Version(), 1, 15) {
// Go1.15 on windows inserts a NOP after the call to
// runtime.Breakpoint and marks it same line as the
// runtime.Breakpoint call, making this flaky, so skip the line check.
startLineno = -1
}
checkStop(t, client, 1, "main.foobar", startLineno)
// Local variables
locals := tester.variables(localsScope)
// Args of foobar(baz string, bar FooBar)
checkVarExact(t, locals, 1, "bar", "bar", `main.FooBar {Baz: 10, Bur: "lorem"}`, "main.FooBar", hasChildren)
tester.failSetVariable(localsScope, "bar", `main.FooBar {Baz: 42, Bur: "ipsum"}`, "*ast.CompositeLit not implemented")
// Nested field.
barRef := checkVarExact(t, locals, 1, "bar", "bar", `main.FooBar {Baz: 10, Bur: "lorem"}`, "main.FooBar", hasChildren)
tester.expectSetVariable(barRef, "Baz", "42")
tester.evaluate("bar", `main.FooBar {Baz: 42, Bur: "lorem"}`, hasChildren)
tester.failSetVariable(barRef, "Baz", `"string"`, "can not convert")
// int
checkVarExact(t, locals, -1, "a2", "a2", "6", "int", noChildren)
tester.expectSetVariable(localsScope, "a2", "42")
tester.evaluate("a2", "42", noChildren)
tester.failSetVariable(localsScope, "a2", "false", "can not convert")
// float
checkVarExact(t, locals, -1, "a3", "a3", "7.23", "float64", noChildren)
tester.expectSetVariable(localsScope, "a3", "-0.1")
tester.evaluate("a3", "-0.1", noChildren)
// array of int
a4Ref := checkVarExact(t, locals, -1, "a4", "a4", "[2]int [1,2]", "[2]int", hasChildren)
tester.expectSetVariable(a4Ref, "[1]", "-7")
tester.evaluate("a4", "[2]int [1,-7]", hasChildren)
tester.failSetVariable(localsScope, "a4", "[2]int{3, 4}", "not implemented")
// slice of int
a5Ref := checkVarExact(t, locals, -1, "a5", "a5", "[]int len: 5, cap: 5, [1,2,3,4,5]", "[]int", hasChildren)
tester.expectSetVariable(a5Ref, "[3]", "100")
tester.evaluate("a5", "[]int len: 5, cap: 5, [1,2,3,100,5]", hasChildren)
// composite literal and its nested fields.
a7Ref := checkVarExact(t, locals, -1, "a7", "a7", `*main.FooBar {Baz: 5, Bur: "strum"}`, "*main.FooBar", hasChildren)
a7Val := tester.variables(a7Ref)
a7ValRef := checkVarExact(t, a7Val, -1, "", "(*a7)", `main.FooBar {Baz: 5, Bur: "strum"}`, "main.FooBar", hasChildren)
tester.expectSetVariable(a7ValRef, "Baz", "7")
tester.evaluate("(*a7)", `main.FooBar {Baz: 7, Bur: "strum"}`, hasChildren)
// pointer
checkVarExact(t, locals, -1, "a9", "a9", `*main.FooBar nil`, "*main.FooBar", noChildren)
tester.expectSetVariable(localsScope, "a9", "&a6")
tester.evaluate("a9", `*main.FooBar {Baz: 8, Bur: "word"}`, hasChildren)
// slice of pointers
a13Ref := checkVarExact(t, locals, -1, "a13", "a13", `[]*main.FooBar len: 3, cap: 3, [*{Baz: 6, Bur: "f"},*{Baz: 7, Bur: "g"},*{Baz: 8, Bur: "h"}]`, "[]*main.FooBar", hasChildren)
a13 := tester.variables(a13Ref)
a13c0Ref := checkVarExact(t, a13, -1, "[0]", "a13[0]", `*main.FooBar {Baz: 6, Bur: "f"}`, "*main.FooBar", hasChildren)
a13c0 := tester.variables(a13c0Ref)
a13c0valRef := checkVarExact(t, a13c0, -1, "", "(*a13[0])", `main.FooBar {Baz: 6, Bur: "f"}`, "main.FooBar", hasChildren)
tester.expectSetVariable(a13c0valRef, "Baz", "777")
tester.evaluate("a13[0]", `*main.FooBar {Baz: 777, Bur: "f"}`, hasChildren)
// complex
tester.evaluate("c64", `(1 + 2i)`, hasChildren)
tester.expectSetVariable(localsScope, "c64", "(2 + 3i)")
tester.evaluate("c64", `(2 + 3i)`, hasChildren)
// note: complex's real, imaginary part can't be directly mutable.
//
// Global variables
// p1 = 10
client.VariablesRequest(globalsScope)
globals := client.ExpectVariablesResponse(t)
checkVarExact(t, globals, -1, "p1", "main.p1", "10", "int", noChildren)
tester.expectSetVariable(globalsScope, "p1", "-10")
tester.evaluate("p1", "-10", noChildren)
tester.failSetVariable(globalsScope, "p1", "0.1", "can not convert")
},
disconnect: true,
}})
})
runTest(t, "testvariables2", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showGlobalVariables": true,
})
},
fixture.Source, []int{}, // breakpoints are set within the program.
[]onBreakpoint{{
execute: func() {
tester := &helperForSetVariable{t, client}
startLineno := 364 // after runtime.Breakpoint
if runtime.GOOS == "windows" && goversion.VersionAfterOrEqual(runtime.Version(), 1, 15) {
startLineno = -1
}
checkStop(t, client, 1, "main.main", startLineno)
locals := tester.variables(localsScope)
// channel
tester.evaluate("chnil", "chan int nil", noChildren)
tester.expectSetVariable(localsScope, "chnil", "ch1")
tester.evaluate("chnil", "chan int 4/11", hasChildren)
// func
tester.evaluate("fn2", "nil", noChildren)
tester.expectSetVariable(localsScope, "fn2", "fn1")
tester.evaluate("fn2", "main.afunc", noChildren)
// interface
tester.evaluate("ifacenil", "interface {} nil", noChildren)
tester.expectSetVariable(localsScope, "ifacenil", "iface1")
tester.evaluate("ifacenil", "interface {}(*main.astruct) *{A: 1, B: 2}", hasChildren)
// interface.(data)
iface1Ref := checkVarExact(t, locals, -1, "iface1", "iface1", "interface {}(*main.astruct) *{A: 1, B: 2}", "interface {}", hasChildren)
iface1 := tester.variables(iface1Ref)
iface1DataRef := checkVarExact(t, iface1, -1, "data", "iface1.(data)", "*main.astruct {A: 1, B: 2}", "*main.astruct", hasChildren)
iface1Data := tester.variables(iface1DataRef)
iface1DataValueRef := checkVarExact(t, iface1Data, -1, "", "(*iface1.(data))", "main.astruct {A: 1, B: 2}", "main.astruct", hasChildren)
tester.expectSetVariable(iface1DataValueRef, "A", "2021")
tester.evaluate("iface1", "interface {}(*main.astruct) *{A: 2021, B: 2}", hasChildren)
// map: string -> struct
tester.evaluate(`m1["Malone"]`, "main.astruct {A: 2, B: 3}", hasChildren)
m1Ref := checkVarRegex(t, locals, -1, "m1", "m1", `.*map\[string\]main\.astruct.*`, `map\[string\]main\.astruct`, hasChildren)
m1 := tester.variables(m1Ref)
elem1 := m1.Body.Variables[1]
tester.expectSetVariable(elem1.VariablesReference, "A", "-9999")
tester.expectSetVariable(elem1.VariablesReference, "B", "10000")
tester.evaluate(elem1.EvaluateName, "main.astruct {A: -9999, B: 10000}", hasChildren)
// map: struct -> int
m3Ref := checkVarExact(t, locals, -1, "m3", "m3", "map[main.astruct]int [{A: 1, B: 1}: 42, {A: 2, B: 2}: 43, ]", "map[main.astruct]int", hasChildren)
tester.expectSetVariable(m3Ref, "main.astruct {A: 1, B: 1}", "8888")
// note: updating keys is possible, but let's not promise anything.
tester.evaluateRegex("m3", `.*\[\{A: 1, B: 1\}: 8888,.*`, hasChildren)
// map: struct -> struct
m4Ref := checkVarRegex(t, locals, -1, "m4", "m4", `map\[main\.astruct]main\.astruct.*\[\{A: 1, B: 1\}: \{A: 11, B: 11\}.*`, `map\[main\.astruct\]main\.astruct`, hasChildren)
m4 := tester.variables(m4Ref)
m4Val1Ref := checkVarRegex(t, m4, -1, "[val 0]", `.*0x[0-9a-f]+.*`, `main.astruct.*`, `main\.astruct`, hasChildren)
tester.expectSetVariable(m4Val1Ref, "A", "-9999")
tester.evaluateRegex("m4", `.*A: -9999,.*`, hasChildren)
// unsigned pointer
checkVarRegex(t, locals, -1, "up1", "up1", `unsafe\.Pointer\(0x[0-9a-f]+\)`, "unsafe.Pointer", noChildren)
tester.expectSetVariable(localsScope, "up1", "unsafe.Pointer(0x0)")
tester.evaluate("up1", "unsafe.Pointer(0x0)", noChildren)
// val := A{val: 1}
valRef := checkVarExact(t, locals, -1, "val", "val", `main.A {val: 1}`, "main.A", hasChildren)
tester.expectSetVariable(valRef, "val", "3")
tester.evaluate("val", `main.A {val: 3}`, hasChildren)
},
disconnect: true,
}})
})
}
// TestSetVariableWithCall tests SetVariable features that do not depend on function calls support.
func TestSetVariableWithCall(t *testing.T) {
protest.MustSupportFunctionCalls(t, testBackend)
runTest(t, "testvariables", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showGlobalVariables": true,
})
},
fixture.Source, []int{66, 67},
[]onBreakpoint{{
execute: func() {
tester := &helperForSetVariable{t, client}
startLineno := 66
if runtime.GOOS == "windows" && goversion.VersionAfterOrEqual(runtime.Version(), 1, 15) {
// Go1.15 on windows inserts a NOP after the call to
// runtime.Breakpoint and marks it same line as the
// runtime.Breakpoint call, making this flaky, so skip the line check.
startLineno = -1
}
checkStop(t, client, 1, "main.foobar", startLineno)
// Local variables
locals := tester.variables(localsScope)
// Args of foobar(baz string, bar FooBar)
checkVarExact(t, locals, 0, "baz", "baz", `"bazburzum"`, "string", noChildren)
tester.expectSetVariable(localsScope, "baz", `"BazBurZum"`)
tester.evaluate("baz", `"BazBurZum"`, noChildren)
barRef := checkVarExact(t, locals, 1, "bar", "bar", `main.FooBar {Baz: 10, Bur: "lorem"}`, "main.FooBar", hasChildren)
tester.expectSetVariable(barRef, "Bur", `"ipsum"`)
tester.evaluate("bar", `main.FooBar {Baz: 10, Bur: "ipsum"}`, hasChildren)
checkVarExact(t, locals, -1, "a1", "a1", `"foofoofoofoofoofoo"`, "string", noChildren)
tester.expectSetVariable(localsScope, "a1", `"barbarbar"`)
tester.evaluate("a1", `"barbarbar"`, noChildren)
a6Ref := checkVarExact(t, locals, -1, "a6", "a6", `main.FooBar {Baz: 8, Bur: "word"}`, "main.FooBar", hasChildren)
tester.failSetVariable(a6Ref, "Bur", "false", "can not convert")
tester.expectSetVariable(a6Ref, "Bur", `"sentence"`)
tester.evaluate("a6", `main.FooBar {Baz: 8, Bur: "sentence"}`, hasChildren)
},
}, {
// Stop at second breakpoint and set a1.
execute: func() {
tester := &helperForSetVariable{t, client}
checkStop(t, client, 1, "main.barfoo", -1)
// Test: set string 'a1' in main.barfoo.
// This shouldn't affect 'a1' in main.foobar - we will check that in the next breakpoint.
locals := tester.variables(localsScope)
checkVarExact(t, locals, -1, "a1", "a1", `"bur"`, "string", noChildren)
tester.expectSetVariable(localsScope, "a1", `"fur"`)
tester.evaluate("a1", `"fur"`, noChildren)
// We will check a1 in main.foobar isn't affected from the next breakpoint.
client.StackTraceRequest(1, 1, 20)
res := client.ExpectStackTraceResponse(t)
if len(res.Body.StackFrames) < 1 {
t.Fatalf("stack trace response = %#v, wanted at least one stack frame", res)
}
outerFrame := res.Body.StackFrames[0].Id
client.EvaluateRequest("a1", outerFrame, "whatever_context")
evalRes := client.ExpectEvaluateResponse(t)
checkEval(t, evalRes, `"barbarbar"`, noChildren)
},
disconnect: true,
}})
})
runTest(t, "fncall", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
func() {
client.LaunchRequestWithArgs(map[string]interface{}{
"mode": "exec", "program": fixture.Path, "showGlobalVariables": true,
})
},
fixture.Source, []int{}, // breakpoints are set within the program.
[]onBreakpoint{{
// Stop at second breakpoint and set a1.
execute: func() {
tester := &helperForSetVariable{t, client}
checkStop(t, client, 1, "main.main", -1)
_ = tester.variables(localsScope)
// successful variable set using a function call.
tester.expectSetVariable(localsScope, "str", `callstacktrace()`)
tester.evaluateRegex("str", `.*in main.callstacktrace at.*`, noChildren)
tester.failSetVariableAndStop(localsScope, "str", `callpanic()`, `callpanic panicked`)
checkStop(t, client, 1, "main.main", -1)
// breakpoint during a function call.
tester.failSetVariableAndStop(localsScope, "str", `callbreak()`, "call stopped")
// TODO(hyangah): continue after this causes runtime error while resuming
// unfinished injected call.
// runtime error: can not convert %!s(<nil>) constant to string
// This can be reproducible with dlv cli. (`call str = callbreak(); continue`)
},
disconnect: true,
}})
})
}
func TestOptionalNotYetImplementedResponses(t *testing.T) {
var got *dap.ErrorResponse
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
seqCnt := 1
expectNotYetImplemented := func(cmd string) {
t.Helper()
got = client.ExpectNotYetImplementedErrorResponse(t)
if got.RequestSeq != seqCnt || got.Command != cmd {
t.Errorf("\ngot %#v\nwant RequestSeq=%d Command=%s", got, seqCnt, cmd)
}
seqCnt++
}
client.TerminateRequest()
expectNotYetImplemented("terminate")
client.RestartRequest()
expectNotYetImplemented("restart")
client.SetExpressionRequest()
expectNotYetImplemented("setExpression")
client.LoadedSourcesRequest()
expectNotYetImplemented("loadedSources")
client.ReadMemoryRequest()
expectNotYetImplemented("readMemory")
client.CancelRequest()
expectNotYetImplemented("cancel")
client.DisconnectRequest()
client.ExpectDisconnectResponse(t)
})
}
func TestBadLaunchRequests(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
seqCnt := 1
checkFailedToLaunch := func(response *dap.ErrorResponse) {
t.Helper()
if response.RequestSeq != seqCnt {
t.Errorf("RequestSeq got %d, want %d", seqCnt, response.RequestSeq)
}
if response.Command != "launch" {
t.Errorf("Command got %q, want \"launch\"", response.Command)
}
if response.Message != "Failed to launch" {
t.Errorf("Message got %q, want \"Failed to launch\"", response.Message)
}
if response.Body.Error.Id != FailedToLaunch {
t.Errorf("Id got %d, want %d", response.Body.Error.Id, FailedToLaunch)
}
seqCnt++
}
checkFailedToLaunchWithMessage := func(response *dap.ErrorResponse, errmsg string) {
t.Helper()
checkFailedToLaunch(response)
if response.Body.Error.Format != errmsg {
t.Errorf("\ngot %q\nwant %q", response.Body.Error.Format, errmsg)
}
}
// Test for the DAP-specific detailed error message.
client.LaunchRequest("exec", "", stopOnEntry)
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The program attribute is missing in debug configuration.")
// Bad "program"
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": 12345})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal number into \"program\" of type string")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": nil})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The program attribute is missing in debug configuration.")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug"})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The program attribute is missing in debug configuration.")
// Bad "mode"
client.LaunchRequest("remote", fixture.Path, stopOnEntry)
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - unsupported 'mode' attribute \"remote\"")
client.LaunchRequest("notamode", fixture.Path, stopOnEntry)
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - unsupported 'mode' attribute \"notamode\"")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": 12345, "program": fixture.Path})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal number into \"mode\" of type string")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": ""}) // empty mode defaults to "debug" (not an error)
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The program attribute is missing in debug configuration.")
client.LaunchRequestWithArgs(map[string]interface{}{}) // missing mode defaults to "debug" (not an error)
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The program attribute is missing in debug configuration.")
// Bad "args"
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "exec", "program": fixture.Path, "args": "foobar"})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal string into \"args\" of type []string")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "exec", "program": fixture.Path, "args": 12345})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal number into \"args\" of type []string")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "exec", "program": fixture.Path, "args": []int{1, 2}})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal number into \"args\" of type string")
// Bad "buildFlags"
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "buildFlags": 123})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal number into \"buildFlags\" of type string")
// Bad "backend"
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "backend": 123})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal number into \"backend\" of type string")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "backend": "foo"})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: could not launch process: unknown backend \"foo\"")
// Bad "substitutePath"
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "substitutePath": 123})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal number into \"substitutePath\" of type {\"from\":string, \"to\":string}")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "substitutePath": []interface{}{123}})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot use 123 as 'substitutePath' of type {\"from\":string, \"to\":string}")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "substitutePath": []interface{}{map[string]interface{}{"to": "path2"}}})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - 'substitutePath' requires both 'from' and 'to' entries")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "substitutePath": []interface{}{map[string]interface{}{"from": "path1", "to": 123}}})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot use {\"from\":\"path1\",\"to\":123} as 'substitutePath' of type {\"from\":string, \"to\":string}")
// Bad "cwd"
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "cwd": 123})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: invalid debug configuration - cannot unmarshal number into \"cwd\" of type string")
// Skip detailed message checks for potentially different OS-specific errors.
client.LaunchRequest("exec", fixture.Path+"_does_not_exist", stopOnEntry)
checkFailedToLaunch(client.ExpectVisibleErrorResponse(t)) // No such file or directory
client.LaunchRequest("debug", fixture.Path+"_does_not_exist", stopOnEntry)
oe := client.ExpectOutputEvent(t)
if !strings.HasPrefix(oe.Body.Output, "Build Error: ") || oe.Body.Category != "stderr" {
t.Errorf("got %#v, want Category=\"stderr\" Output=\"Build Error: ...\"", oe)
}
checkFailedToLaunch(client.ExpectInvisibleErrorResponse(t))
client.LaunchRequestWithArgs(map[string]interface{}{
"request": "launch",
/* mode: debug by default*/
"program": fixture.Path + "_does_not_exist",
"stopOnEntry": stopOnEntry,
})
oe = client.ExpectOutputEvent(t)
if !strings.HasPrefix(oe.Body.Output, "Build Error: ") || oe.Body.Category != "stderr" {
t.Errorf("got %#v, want Category=\"stderr\" Output=\"Build Error: ...\"", oe)
}
checkFailedToLaunch(client.ExpectInvisibleErrorResponse(t))
client.LaunchRequest("exec", fixture.Source, stopOnEntry)
checkFailedToLaunch(client.ExpectVisibleErrorResponse(t)) // Not an executable
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "buildFlags": "-bad -flags"})
oe = client.ExpectOutputEvent(t)
if !strings.HasPrefix(oe.Body.Output, "Build Error: ") || oe.Body.Category != "stderr" {
t.Errorf("got %#v, want Category=\"stderr\" Output=\"Build Error: ...\"", oe)
}
checkFailedToLaunchWithMessage(client.ExpectInvisibleErrorResponse(t), "Failed to launch: Build error: Check the debug console for details.")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "noDebug": true, "buildFlags": "-bad -flags"})
oe = client.ExpectOutputEvent(t)
if !strings.HasPrefix(oe.Body.Output, "Build Error: ") || oe.Body.Category != "stderr" {
t.Errorf("got %#v, want Category=\"stderr\" Output=\"Build Error: ...\"", oe)
}
checkFailedToLaunchWithMessage(client.ExpectInvisibleErrorResponse(t), "Failed to launch: Build error: Check the debug console for details.")
// Bad "cwd"
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "noDebug": false, "cwd": "dir/invalid"})
checkFailedToLaunch(client.ExpectVisibleErrorResponse(t)) // invalid directory, the error message is system-dependent.
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "noDebug": true, "cwd": "dir/invalid"})
checkFailedToLaunch(client.ExpectVisibleErrorResponse(t)) // invalid directory, the error message is system-dependent.
// Bad "noDebug"
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "debug", "program": fixture.Source, "noDebug": "true"})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t), "Failed to launch: invalid debug configuration - cannot unmarshal string into \"noDebug\" of type bool")
// Bad "replay" parameters
// These errors come from dap layer
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "replay", "traceDirPath": ""})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The 'traceDirPath' attribute is missing in debug configuration.")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "replay", "program": fixture.Source, "traceDirPath": ""})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The 'traceDirPath' attribute is missing in debug configuration.")
// These errors come from debugger layer
if _, err := exec.LookPath("rr"); err != nil {
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "replay", "backend": "ignored", "traceDirPath": ".."})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: backend unavailable")
}
// Bad "core" parameters
// These errors come from dap layer
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "core", "coreFilePath": ""})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The program attribute is missing in debug configuration.")
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "core", "program": fixture.Source, "coreFilePath": ""})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: The 'coreFilePath' attribute is missing in debug configuration.")
// These errors come from debugger layer
client.LaunchRequestWithArgs(map[string]interface{}{"mode": "core", "backend": "ignored", "program": fixture.Source, "coreFilePath": fixture.Source})
checkFailedToLaunchWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to launch: unrecognized core format")
// We failed to launch the program. Make sure shutdown still works.
client.DisconnectRequest()
dresp := client.ExpectDisconnectResponse(t)
if dresp.RequestSeq != seqCnt {
t.Errorf("got %#v, want RequestSeq=%d", dresp, seqCnt)
}
})
}
func TestBadAttachRequest(t *testing.T) {
runTest(t, "loopprog", func(client *daptest.Client, fixture protest.Fixture) {
seqCnt := 1
checkFailedToAttach := func(response *dap.ErrorResponse) {
t.Helper()
if response.RequestSeq != seqCnt {
t.Errorf("RequestSeq got %d, want %d", seqCnt, response.RequestSeq)
}
if response.Command != "attach" {
t.Errorf("Command got %q, want \"attach\"", response.Command)
}
if response.Message != "Failed to attach" {
t.Errorf("Message got %q, want \"Failed to attach\"", response.Message)
}
if response.Body.Error.Id != FailedToAttach {
t.Errorf("Id got %d, want %d", response.Body.Error.Id, FailedToAttach)
}
seqCnt++
}
checkFailedToAttachWithMessage := func(response *dap.ErrorResponse, errmsg string) {
t.Helper()
checkFailedToAttach(response)
if response.Body.Error.Format != errmsg {
t.Errorf("\ngot %q\nwant %q", response.Body.Error.Format, errmsg)
}
}
// Bad "mode"
client.AttachRequest(map[string]interface{}{"mode": "blah blah blah"})
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: invalid debug configuration - unsupported 'mode' attribute \"blah blah blah\"")
client.AttachRequest(map[string]interface{}{"mode": 123})
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: invalid debug configuration - cannot unmarshal number into \"mode\" of type string")
client.AttachRequest(map[string]interface{}{"mode": ""}) // empty mode defaults to "local" (not an error)
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: The 'processId' attribute is missing in debug configuration")
client.AttachRequest(map[string]interface{}{}) // no mode defaults to "local" (not an error)
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: The 'processId' attribute is missing in debug configuration")
// Bad "processId"
client.AttachRequest(map[string]interface{}{"mode": "local"})
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: The 'processId' attribute is missing in debug configuration")
client.AttachRequest(map[string]interface{}{"mode": "local", "processId": nil})
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: The 'processId' attribute is missing in debug configuration")
client.AttachRequest(map[string]interface{}{"mode": "local", "processId": 0})
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: The 'processId' attribute is missing in debug configuration")
client.AttachRequest(map[string]interface{}{"mode": "local", "processId": "1"})
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: invalid debug configuration - cannot unmarshal string into \"processId\" of type int")
client.AttachRequest(map[string]interface{}{"mode": "local", "processId": 1})
// The exact message varies on different systems, so skip that check
checkFailedToAttach(client.ExpectVisibleErrorResponse(t)) // could not attach to pid 1
// This will make debugger.(*Debugger) panic, which we will catch as an internal error.
client.AttachRequest(map[string]interface{}{"mode": "local", "processId": -1})
er := client.ExpectInvisibleErrorResponse(t)
if er.RequestSeq != seqCnt {
t.Errorf("RequestSeq got %d, want %d", seqCnt, er.RequestSeq)
}
seqCnt++
if er.Command != "" {
t.Errorf("Command got %q, want \"attach\"", er.Command)
}
if er.Body.Error.Format != "Internal Error: runtime error: index out of range [0] with length 0" {
t.Errorf("Message got %q, want \"Internal Error: runtime error: index out of range [0] with length 0\"", er.Message)
}
if er.Body.Error.Id != InternalError {
t.Errorf("Id got %d, want %d", er.Body.Error.Id, InternalError)
}
// Bad "backend"
client.AttachRequest(map[string]interface{}{"mode": "local", "processId": 1, "backend": 123})
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: invalid debug configuration - cannot unmarshal number into \"backend\" of type string")
client.AttachRequest(map[string]interface{}{"mode": "local", "processId": 1, "backend": "foo"})
checkFailedToAttachWithMessage(client.ExpectVisibleErrorResponse(t),
"Failed to attach: could not attach to pid 1: unknown backend \"foo\"")
// We failed to attach to the program. Make sure shutdown still works.
client.DisconnectRequest()
dresp := client.ExpectDisconnectResponse(t)
if dresp.RequestSeq != seqCnt {
t.Errorf("got %#v, want RequestSeq=%d", dresp, seqCnt)
}
})
}
func launchDebuggerWithTargetRunning(t *testing.T, fixture string) (*protest.Fixture, *debugger.Debugger) {
t.Helper()
fixbin, dbg := launchDebuggerWithTargetHalted(t, fixture)
running := make(chan struct{})
var err error
go func() {
t.Helper()
_, err = dbg.Command(&api.DebuggerCommand{Name: api.Continue}, running)
select {
case <-running:
default:
close(running)
}
}()
<-running
if err != nil {
t.Fatal("failed to continue on launch", err)
}
return fixbin, dbg
}
func launchDebuggerWithTargetHalted(t *testing.T, fixture string) (*protest.Fixture, *debugger.Debugger) {
t.Helper()
fixbin := protest.BuildFixture(fixture, protest.AllNonOptimized)
cfg := service.Config{
ProcessArgs: []string{fixbin.Path},
Debugger: debugger.Config{Backend: "default"},
}
dbg, err := debugger.New(&cfg.Debugger, cfg.ProcessArgs) // debugger halts process on entry
if err != nil {
t.Fatal("failed to start debugger:", err)
}
return &fixbin, dbg
}
// runTestWithDebugger starts the server and sets its debugger, initializes a debug session,
// runs test, then disconnects. Expects no running async handler at the end of test() (either
// process is halted or debug session never launched.)
func runTestWithDebugger(t *testing.T, dbg *debugger.Debugger, test func(c *daptest.Client)) {
serverStopped := make(chan struct{})
server, _ := startDAPServer(t, serverStopped)
client := daptest.NewClient(server.listener.Addr().String())
time.Sleep(100 * time.Millisecond) // Give time for connection to be set as dap.Session
server.sessionMu.Lock()
if server.session == nil {
t.Fatal("DAP session is not ready")
}
server.session.debugger = dbg
server.sessionMu.Unlock()
defer client.Close()
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
test(client)
client.DisconnectRequest()
if server.config.Debugger.AttachPid == 0 { // launched target
client.ExpectOutputEventDetachingKill(t)
} else { // attached to target
client.ExpectOutputEventDetachingNoKill(t)
}
client.ExpectDisconnectResponse(t)
client.ExpectTerminatedEvent(t)
<-serverStopped
}
func TestAttachRemoteToHaltedTargetStopOnEntry(t *testing.T) {
// Halted + stop on entry
_, dbg := launchDebuggerWithTargetHalted(t, "increment")
runTestWithDebugger(t, dbg, func(client *daptest.Client) {
client.AttachRequest(map[string]interface{}{"mode": "remote", "stopOnEntry": true})
client.ExpectInitializedEvent(t)
client.ExpectAttachResponse(t)
client.ConfigurationDoneRequest()
client.ExpectStoppedEvent(t)
client.ExpectConfigurationDoneResponse(t)
})
}
func TestAttachRemoteToHaltedTargetContinueOnEntry(t *testing.T) {
// Halted + continue on entry
_, dbg := launchDebuggerWithTargetHalted(t, "http_server")
runTestWithDebugger(t, dbg, func(client *daptest.Client) {
client.AttachRequest(map[string]interface{}{"mode": "remote", "stopOnEntry": false})
client.ExpectInitializedEvent(t)
client.ExpectAttachResponse(t)
client.ConfigurationDoneRequest()
client.ExpectConfigurationDoneResponse(t)
// Continuing
time.Sleep(time.Second)
// Halt to make the disconnect sequence more predictable.
client.PauseRequest(1)
expectPauseResponseAndStoppedEvent(t, client)
})
}
func TestAttachRemoteToRunningTargetStopOnEntry(t *testing.T) {
fixture, dbg := launchDebuggerWithTargetRunning(t, "loopprog")
runTestWithDebugger(t, dbg, func(client *daptest.Client) {
client.AttachRequest(map[string]interface{}{"mode": "remote", "stopOnEntry": true})
client.ExpectInitializedEvent(t)
client.ExpectAttachResponse(t)
// Target is halted here
client.SetBreakpointsRequest(fixture.Source, []int{8})
expectSetBreakpointsResponse(t, client, []Breakpoint{{8, fixture.Source, true, ""}})
client.ConfigurationDoneRequest()
client.ExpectStoppedEvent(t)
client.ExpectConfigurationDoneResponse(t)
client.ContinueRequest(1)
client.ExpectContinueResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
})
}
func TestAttachRemoteToRunningTargetContinueOnEntry(t *testing.T) {
fixture, dbg := launchDebuggerWithTargetRunning(t, "loopprog")
runTestWithDebugger(t, dbg, func(client *daptest.Client) {
client.AttachRequest(map[string]interface{}{"mode": "remote", "stopOnEntry": false})
client.ExpectInitializedEvent(t)
client.ExpectAttachResponse(t)
// Target is halted here
client.SetBreakpointsRequest(fixture.Source, []int{8})
expectSetBreakpointsResponse(t, client, []Breakpoint{{8, fixture.Source, true, ""}})
client.ConfigurationDoneRequest()
// Target is restarted here
client.ExpectConfigurationDoneResponse(t)
client.ExpectStoppedEvent(t)
checkStop(t, client, 1, "main.loop", 8)
})
}
// TestMultiClient tests that that remote attach doesn't take down
// the server in multi-client mode unless terminateDebugee is explicitely set.
func TestAttachRemoteMultiClient(t *testing.T) {
closingClientSessionOnly := "Closing client session, but leaving multi-client DAP server running at"
detachingAndTerminating := "Detaching and terminating target process"
tests := []struct {
name string
disconnectRequest func(client *daptest.Client)
expect string
}{
{"default", func(c *daptest.Client) { c.DisconnectRequest() }, closingClientSessionOnly},
{"terminate=true", func(c *daptest.Client) { c.DisconnectRequestWithKillOption(true) }, detachingAndTerminating},
{"terminate=false", func(c *daptest.Client) { c.DisconnectRequestWithKillOption(false) }, closingClientSessionOnly},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
serverStopped := make(chan struct{})
server, forceStop := startDAPServer(t, serverStopped)
client := daptest.NewClient(server.listener.Addr().String())
defer client.Close()
time.Sleep(100 * time.Millisecond) // Give time for connection to be set as dap.Session
server.sessionMu.Lock()
if server.session == nil {
t.Fatal("dap session is not ready")
}
// DAP server doesn't support accept-multiclient, but we can use this
// hack to test the inner connection logic that can be used by a server that does.
server.session.config.AcceptMulti = true
_, server.session.debugger = launchDebuggerWithTargetHalted(t, "increment")
server.sessionMu.Unlock()
client.InitializeRequest()
client.ExpectInitializeResponseAndCapabilities(t)
client.AttachRequest(map[string]interface{}{"mode": "remote", "stopOnEntry": true})
client.ExpectInitializedEvent(t)
client.ExpectAttachResponse(t)
client.ConfigurationDoneRequest()
client.ExpectStoppedEvent(t)
client.ExpectConfigurationDoneResponse(t)
tc.disconnectRequest(client)
e := client.ExpectOutputEvent(t)
if matched, _ := regexp.MatchString(tc.expect, e.Body.Output); !matched {
t.Errorf("\ngot %#v\nwant Output=%q", e, tc.expect)
}
client.ExpectDisconnectResponse(t)
client.ExpectTerminatedEvent(t)
time.Sleep(10 * time.Millisecond) // give time for things to shut down
if tc.expect == closingClientSessionOnly {
// At this point a multi-client server is still running.
verifySessionStopped(t, server.session)
// Since it is a dap server, it cannot accept another client, so the only
// way to take down the server is to force-kill it.
close(forceStop)
}
<-serverStopped
})
}
}
func TestLaunchAttachErrorWhenDebugInProgress(t *testing.T) {
tests := []struct {
name string
dbg func() *debugger.Debugger
}{
{"halted", func() *debugger.Debugger { _, dbg := launchDebuggerWithTargetHalted(t, "increment"); return dbg }},
{"running", func() *debugger.Debugger { _, dbg := launchDebuggerWithTargetRunning(t, "loopprog"); return dbg }},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
runTestWithDebugger(t, tc.dbg(), func(client *daptest.Client) {
client.EvaluateRequest("1==1", 0 /*no frame specified*/, "repl")
if tc.name == "running" {
client.ExpectInvisibleErrorResponse(t)
} else {
client.ExpectEvaluateResponse(t)
}
// Both launch and attach requests should go through for additional error checking
client.AttachRequest(map[string]interface{}{"mode": "local", "processId": 100})
er := client.ExpectVisibleErrorResponse(t)
msg := "Failed to attach: debugger already started - use remote mode to connect"
if er.Body.Error.Id != FailedToAttach || er.Body.Error.Format != msg {
t.Errorf("got %#v, want Id=%d Format=%q", er, FailedToAttach, msg)
}
tests := []string{"debug", "test", "exec", "replay", "core"}
for _, mode := range tests {
t.Run(mode, func(t *testing.T) {
client.LaunchRequestWithArgs(map[string]interface{}{"mode": mode})
er := client.ExpectVisibleErrorResponse(t)
msg := "Failed to launch: debugger already started - use remote attach to connect to a server with an active debug session"
if er.Body.Error.Id != FailedToLaunch || er.Body.Error.Format != msg {
t.Errorf("got %#v, want Id=%d Format=%q", er, FailedToLaunch, msg)
}
})
}
})
})
}
}
func TestBadInitializeRequest(t *testing.T) {
runInitializeTest := func(args dap.InitializeRequestArguments, err string) {
t.Helper()
// Only one initialize request is allowed, so use a new server
// for each test.
serverStopped := make(chan struct{})
client := startDAPServerWithClient(t, serverStopped)
defer client.Close()
client.InitializeRequestWithArgs(args)
response := client.ExpectErrorResponse(t)
if response.Command != "initialize" {
t.Errorf("Command got %q, want \"launch\"", response.Command)
}
if response.Message != "Failed to initialize" {
t.Errorf("Message got %q, want \"Failed to launch\"", response.Message)
}
if response.Body.Error.Id != FailedToInitialize {
t.Errorf("Id got %d, want %d", response.Body.Error.Id, FailedToInitialize)
}
if response.Body.Error.Format != err {
t.Errorf("\ngot %q\nwant %q", response.Body.Error.Format, err)
}
client.DisconnectRequest()
client.ExpectDisconnectResponse(t)
<-serverStopped
}
// Bad path format.
runInitializeTest(dap.InitializeRequestArguments{
AdapterID: "go",
PathFormat: "url", // unsupported 'pathFormat'
LinesStartAt1: true,
ColumnsStartAt1: true,
Locale: "en-us",
},
"Failed to initialize: Unsupported 'pathFormat' value 'url'.",
)
// LinesStartAt1 must be true.
runInitializeTest(dap.InitializeRequestArguments{
AdapterID: "go",
PathFormat: "path",
LinesStartAt1: false, // only 1-based line numbers are supported
ColumnsStartAt1: true,
Locale: "en-us",
},
"Failed to initialize: Only 1-based line numbers are supported.",
)
// ColumnsStartAt1 must be true.
runInitializeTest(dap.InitializeRequestArguments{
AdapterID: "go",
PathFormat: "path",
LinesStartAt1: true,
ColumnsStartAt1: false, // only 1-based column numbers are supported
Locale: "en-us",
},
"Failed to initialize: Only 1-based column numbers are supported.",
)
}
func TestBadlyFormattedMessageToServer(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
// Send a badly formatted message to the server, and expect it to close the
// connection.
client.BadRequest()
time.Sleep(100 * time.Millisecond)
_, err := client.ReadMessage()
if err != io.EOF {
t.Errorf("got err=%v, want io.EOF", err)
}
})
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
// Send an unknown request message to the server, and expect it to send
// an error response.
client.UnknownRequest()
err := client.ExpectErrorResponse(t)
if err.Body.Error.Format != "Internal Error: Request command 'unknown' is not supported (seq: 1)" || err.RequestSeq != 1 {
t.Errorf("got %v, want RequestSeq=1 Error=\"Internal Error: Request command 'unknown' is not supported (seq: 1)\"", err)
}
// Make sure that the unknown request did not kill the server.
client.InitializeRequest()
client.ExpectInitializeResponse(t)
client.DisconnectRequest()
client.ExpectDisconnectResponse(t)
})
}
func TestDisassemble(t *testing.T) {
runTest(t, "increment", func(client *daptest.Client, fixture protest.Fixture) {
runDebugSessionWithBPs(t, client, "launch",
// Launch
func() {
client.LaunchRequest("exec", fixture.Path, !stopOnEntry)
},
// Set breakpoints
fixture.Source, []int{17},
[]onBreakpoint{{
// Stop at line 17
execute: func() {
checkStop(t, client, 1, "main.main", 17)
client.StackTraceRequest(1, 0, 1)
st := client.ExpectStackTraceResponse(t)
if len(st.Body.StackFrames) < 1 {
t.Fatalf("\ngot %#v\nwant len(stackframes) => 1", st)
}
// Request the single instruction that the program is stopped at.
pc := st.Body.StackFrames[0].InstructionPointerReference
client.DisassembleRequest(pc, 0, 1)
dr := client.ExpectDisassembleResponse(t)
if len(dr.Body.Instructions) != 1 {
t.Errorf("\ngot %#v\nwant len(instructions) = 1", dr)
} else if dr.Body.Instructions[0].Address != pc {
t.Errorf("\ngot %#v\nwant instructions[0].Address = %s", dr, pc)
}
// Request the instruction that the program is stopped at, and the two
// surrounding it.
client.DisassembleRequest(pc, -1, 3)
dr = client.ExpectDisassembleResponse(t)
if len(dr.Body.Instructions) != 3 {
t.Errorf("\ngot %#v\nwant len(instructions) = 3", dr)
} else if dr.Body.Instructions[1].Address != pc {
t.Errorf("\ngot %#v\nwant instructions[1].Address = %s", dr, pc)
}
// Request zero instrutions.
client.DisassembleRequest(pc, 0, 0)
dr = client.ExpectDisassembleResponse(t)
if len(dr.Body.Instructions) != 0 {
t.Errorf("\ngot %#v\nwant len(instructions) = 0", dr)
}
// Request invalid instructions.
client.DisassembleRequest(invalidInstruction.Address, 0, 10)
dr = client.ExpectDisassembleResponse(t)
if len(dr.Body.Instructions) != 10 {
t.Errorf("\ngot %#v\nwant len(instructions) = 10", dr)
}
for i, got := range dr.Body.Instructions {
if !reflect.DeepEqual(got, invalidInstruction) {
t.Errorf("\ngot [%d]=%#v\nwant = %#v", i, got, invalidInstruction)
}
}
// Bad request, not a number.
client.DisassembleRequest("hello, world!", 0, 1)
client.ExpectErrorResponse(t)
// Bad request, not an address in program.
client.DisassembleRequest("0x5", 0, 100)
client.ExpectErrorResponse(t)
},
disconnect: true,
}},
)
})
}
func TestAlignPCs(t *testing.T) {
NUM_FUNCS := 10
// Create fake functions to test align PCs.
funcs := make([]proc.Function, NUM_FUNCS)
for i := 0; i < len(funcs); i++ {
funcs[i] = proc.Function{
Entry: uint64(100 + i*10),
End: uint64(100 + i*10 + 5),
}
}
bi := &proc.BinaryInfo{
Functions: funcs,
}
type args struct {
start uint64
end uint64
}
tests := []struct {
name string
args args
wantStart uint64
wantEnd uint64
}{
{
name: "out of bounds",
args: args{
start: funcs[0].Entry - 5,
end: funcs[NUM_FUNCS-1].End + 5,
},
wantStart: funcs[0].Entry, // start of first function
wantEnd: funcs[NUM_FUNCS-1].End, // end of last function
},
{
name: "same function",
args: args{
start: funcs[1].Entry + 1,
end: funcs[1].Entry + 2,
},
wantStart: funcs[1].Entry, // start of containing function
wantEnd: funcs[1].End, // end of containing function
},
{
name: "between functions",
args: args{
start: funcs[1].End + 1,
end: funcs[1].End + 2,
},
wantStart: funcs[1].Entry, // start of function before
wantEnd: funcs[2].Entry, // start of function after
},
{
name: "start of function",
args: args{
start: funcs[2].Entry,
end: funcs[5].Entry,
},
wantStart: funcs[2].Entry, // start of current function
wantEnd: funcs[5].End, // end of current function
},
{
name: "end of function",
args: args{
start: funcs[4].End,
end: funcs[8].End,
},
wantStart: funcs[4].Entry, // start of current function
wantEnd: funcs[9].Entry, // start of next function
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
gotStart, gotEnd := alignPCs(bi, tt.args.start, tt.args.end)
if gotStart != tt.wantStart {
t.Errorf("alignPCs() got start = %v, want %v", gotStart, tt.wantStart)
}
if gotEnd != tt.wantEnd {
t.Errorf("alignPCs() got end = %v, want %v", gotEnd, tt.wantEnd)
}
})
}
}
func TestFindInstructions(t *testing.T) {
numInstructions := 100
startPC := 0x1000
procInstructions := make([]proc.AsmInstruction, numInstructions)
for i := 0; i < len(procInstructions); i++ {
procInstructions[i] = proc.AsmInstruction{
Loc: proc.Location{
PC: uint64(startPC + 2*i),
},
}
}
type args struct {
addr int64
offset int
count int
}
tests := []struct {
name string
args args
wantInstructions []proc.AsmInstruction
wantOffset int
wantErr bool
}{
{
name: "request all",
args: args{
addr: int64(startPC),
offset: 0,
count: 100,
},
wantInstructions: procInstructions,
wantOffset: 0,
wantErr: false,
},
{
name: "request all (with offset)",
args: args{
addr: int64(startPC + numInstructions), // the instruction addr at numInstructions/2
offset: -numInstructions / 2,
count: numInstructions,
},
wantInstructions: procInstructions,
wantOffset: 0,
wantErr: false,
},
{
name: "request half (with offset)",
args: args{
addr: int64(startPC),
offset: 0,
count: numInstructions / 2,
},
wantInstructions: procInstructions[:numInstructions/2],
wantOffset: 0,
wantErr: false,
},
{
name: "request half (with offset)",
args: args{
addr: int64(startPC),
offset: numInstructions / 2,
count: numInstructions / 2,
},
wantInstructions: procInstructions[numInstructions/2:],
wantOffset: 0,
wantErr: false,
},
{
name: "request too many",
args: args{
addr: int64(startPC),
offset: 0,
count: numInstructions * 2,
},
wantInstructions: procInstructions,
wantOffset: 0,
wantErr: false,
},
{
name: "request too many with offset",
args: args{
addr: int64(startPC),
offset: -numInstructions,
count: numInstructions * 2,
},
wantInstructions: procInstructions,
wantOffset: numInstructions,
wantErr: false,
},
{
name: "request out of bounds",
args: args{
addr: int64(startPC),
offset: -numInstructions,
count: numInstructions,
},
wantInstructions: []proc.AsmInstruction{},
wantOffset: 0,
wantErr: false,
},
{
name: "request out of bounds",
args: args{
addr: int64(uint64(startPC + 2*(numInstructions-1))),
offset: 1,
count: numInstructions,
},
wantInstructions: []proc.AsmInstruction{},
wantOffset: 0,
wantErr: false,
},
{
name: "addr out of bounds (low)",
args: args{
addr: 0,
offset: 0,
count: 100,
},
wantInstructions: nil,
wantOffset: -1,
wantErr: true,
},
{
name: "addr out of bounds (high)",
args: args{
addr: int64(startPC + 2*(numInstructions+1)),
offset: -10,
count: 20,
},
wantInstructions: nil,
wantOffset: -1,
wantErr: true,
},
{
name: "addr not aligned",
args: args{
addr: int64(startPC + 1),
offset: 0,
count: 20,
},
wantInstructions: nil,
wantOffset: -1,
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
gotInstructions, gotOffset, err := findInstructions(procInstructions, tt.args.addr, tt.args.offset, tt.args.count)
if (err != nil) != tt.wantErr {
t.Errorf("findInstructions() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(gotInstructions, tt.wantInstructions) {
t.Errorf("findInstructions() got instructions = %v, want %v", gotInstructions, tt.wantInstructions)
}
if gotOffset != tt.wantOffset {
t.Errorf("findInstructions() got offset = %v, want %v", gotOffset, tt.wantOffset)
}
})
}
}
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