37e44bf603
Adds the ability to automatically debug child processes executed by the target to the linux native backend. This commit does not contain user interface or API to access this functionality. Updates #2551
297 lines
9.6 KiB
Go
297 lines
9.6 KiB
Go
package gdbserial_test
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import (
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"flag"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"testing"
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"github.com/go-delve/delve/pkg/logflags"
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"github.com/go-delve/delve/pkg/proc"
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"github.com/go-delve/delve/pkg/proc/gdbserial"
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protest "github.com/go-delve/delve/pkg/proc/test"
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)
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func TestMain(m *testing.M) {
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var logConf string
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flag.StringVar(&logConf, "log", "", "configures logging")
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flag.Parse()
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logflags.Setup(logConf != "", logConf, "")
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os.Exit(protest.RunTestsWithFixtures(m))
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}
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func withTestRecording(name string, t testing.TB, fn func(grp *proc.TargetGroup, fixture protest.Fixture)) {
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fixture := protest.BuildFixture(name, 0)
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protest.MustHaveRecordingAllowed(t)
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if path, _ := exec.LookPath("rr"); path == "" {
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t.Skip("test skipped, rr not found")
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}
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t.Log("recording")
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grp, tracedir, err := gdbserial.RecordAndReplay([]string{fixture.Path}, ".", true, []string{}, [3]string{})
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if err != nil {
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t.Fatal("Launch():", err)
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}
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t.Logf("replaying %q", tracedir)
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defer grp.Detach(true)
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fn(grp, fixture)
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}
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func assertNoError(err error, t testing.TB, s string) {
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if err != nil {
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_, file, line, _ := runtime.Caller(1)
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fname := filepath.Base(file)
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t.Fatalf("failed assertion at %s:%d: %s - %s\n", fname, line, s, err)
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}
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}
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func setFunctionBreakpoint(p *proc.Target, t *testing.T, fname string) *proc.Breakpoint {
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_, f, l, _ := runtime.Caller(1)
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f = filepath.Base(f)
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addrs, err := proc.FindFunctionLocation(p, fname, 0)
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if err != nil {
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t.Fatalf("%s:%d: FindFunctionLocation(%s): %v", f, l, fname, err)
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}
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if len(addrs) != 1 {
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t.Fatalf("%s:%d: setFunctionBreakpoint(%s): too many results %v", f, l, fname, addrs)
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}
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bp, err := p.SetBreakpoint(0, addrs[0], proc.UserBreakpoint, nil)
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if err != nil {
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t.Fatalf("%s:%d: FindFunctionLocation(%s): %v", f, l, fname, err)
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}
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return bp
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}
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func TestRestartAfterExit(t *testing.T) {
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protest.AllowRecording(t)
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withTestRecording("testnextprog", t, func(grp *proc.TargetGroup, fixture protest.Fixture) {
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p := grp.Selected
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setFunctionBreakpoint(p, t, "main.main")
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assertNoError(grp.Continue(), t, "Continue")
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loc, err := p.CurrentThread().Location()
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assertNoError(err, t, "CurrentThread().Location()")
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err = grp.Continue()
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if _, isexited := err.(proc.ErrProcessExited); err == nil || !isexited {
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t.Fatalf("program did not exit: %v", err)
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}
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assertNoError(grp.Restart(""), t, "Restart")
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assertNoError(grp.Continue(), t, "Continue (after restart)")
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loc2, err := p.CurrentThread().Location()
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assertNoError(err, t, "CurrentThread().Location() (after restart)")
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if loc2.Line != loc.Line {
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t.Fatalf("stopped at %d (expected %d)", loc2.Line, loc.Line)
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}
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err = grp.Continue()
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if _, isexited := err.(proc.ErrProcessExited); err == nil || !isexited {
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t.Fatalf("program did not exit (after exit): %v", err)
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}
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})
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}
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func TestRestartDuringStop(t *testing.T) {
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protest.AllowRecording(t)
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withTestRecording("testnextprog", t, func(grp *proc.TargetGroup, fixture protest.Fixture) {
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p := grp.Selected
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setFunctionBreakpoint(p, t, "main.main")
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assertNoError(grp.Continue(), t, "Continue")
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loc, err := p.CurrentThread().Location()
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assertNoError(err, t, "CurrentThread().Location()")
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assertNoError(grp.Restart(""), t, "Restart")
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assertNoError(grp.Continue(), t, "Continue (after restart)")
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loc2, err := p.CurrentThread().Location()
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assertNoError(err, t, "CurrentThread().Location() (after restart)")
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if loc2.Line != loc.Line {
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t.Fatalf("stopped at %d (expected %d)", loc2.Line, loc.Line)
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}
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err = grp.Continue()
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if _, isexited := err.(proc.ErrProcessExited); err == nil || !isexited {
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t.Fatalf("program did not exit (after exit): %v", err)
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}
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})
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}
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func setFileBreakpoint(p *proc.Target, t *testing.T, fixture protest.Fixture, lineno int) *proc.Breakpoint {
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_, f, l, _ := runtime.Caller(1)
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f = filepath.Base(f)
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addrs, err := proc.FindFileLocation(p, fixture.Source, lineno)
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if err != nil {
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t.Fatalf("%s:%d: FindFileLocation(%s, %d): %v", f, l, fixture.Source, lineno, err)
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}
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if len(addrs) != 1 {
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t.Fatalf("%s:%d: setFileLineBreakpoint(%s, %d): too many results %v", f, l, fixture.Source, lineno, addrs)
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}
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bp, err := p.SetBreakpoint(int(addrs[0]), addrs[0], proc.UserBreakpoint, nil)
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if err != nil {
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t.Fatalf("%s:%d: SetBreakpoint: %v", f, l, err)
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}
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return bp
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}
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func TestReverseBreakpointCounts(t *testing.T) {
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protest.AllowRecording(t)
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withTestRecording("bpcountstest", t, func(grp *proc.TargetGroup, fixture protest.Fixture) {
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p := grp.Selected
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endbp := setFileBreakpoint(p, t, fixture, 28)
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assertNoError(grp.Continue(), t, "Continue()")
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loc, _ := p.CurrentThread().Location()
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if loc.PC != endbp.Addr {
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t.Fatalf("did not reach end of main.main function: %s:%d (%#x)", loc.File, loc.Line, loc.PC)
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}
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p.ClearBreakpoint(endbp.Addr)
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assertNoError(grp.ChangeDirection(proc.Backward), t, "Switching to backward direction")
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bp := setFileBreakpoint(p, t, fixture, 12)
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startbp := setFileBreakpoint(p, t, fixture, 20)
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countLoop:
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for {
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assertNoError(grp.Continue(), t, "Continue()")
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loc, _ := p.CurrentThread().Location()
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switch loc.PC {
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case startbp.Addr:
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break countLoop
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case bp.Addr:
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// ok
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default:
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t.Fatalf("unexpected stop location %s:%d %#x", loc.File, loc.Line, loc.PC)
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}
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}
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t.Logf("TotalHitCount: %d", bp.Logical.TotalHitCount)
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if bp.Logical.TotalHitCount != 200 {
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t.Fatalf("Wrong TotalHitCount for the breakpoint (%d)", bp.Logical.TotalHitCount)
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}
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if len(bp.Logical.HitCount) != 2 {
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t.Fatalf("Wrong number of goroutines for breakpoint (%d)", len(bp.Logical.HitCount))
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}
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for _, v := range bp.Logical.HitCount {
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if v != 100 {
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t.Fatalf("Wrong HitCount for breakpoint (%v)", bp.Logical.HitCount)
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}
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}
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})
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}
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func getPosition(grp *proc.TargetGroup, t *testing.T) (when string, loc *proc.Location) {
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var err error
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when, err = grp.When()
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assertNoError(err, t, "When")
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loc, err = grp.Selected.CurrentThread().Location()
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assertNoError(err, t, "Location")
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return
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}
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func TestCheckpoints(t *testing.T) {
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protest.AllowRecording(t)
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withTestRecording("continuetestprog", t, func(grp *proc.TargetGroup, fixture protest.Fixture) {
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p := grp.Selected
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// Continues until start of main.main, record output of 'when'
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bp := setFunctionBreakpoint(p, t, "main.main")
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assertNoError(grp.Continue(), t, "Continue")
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when0, loc0 := getPosition(grp, t)
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t.Logf("when0: %q (%#x) %x", when0, loc0.PC, p.CurrentThread().ThreadID())
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// Create a checkpoint and check that the list of checkpoints reflects this
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cpid, err := grp.Checkpoint("checkpoint1")
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if cpid != 1 {
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t.Errorf("unexpected checkpoint id %d", cpid)
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}
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assertNoError(err, t, "Checkpoint")
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checkpoints, err := grp.Checkpoints()
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assertNoError(err, t, "Checkpoints")
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if len(checkpoints) != 1 {
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t.Fatalf("wrong number of checkpoints %v (one expected)", checkpoints)
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}
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// Move forward with next, check that the output of 'when' changes
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assertNoError(grp.Next(), t, "First Next")
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assertNoError(grp.Next(), t, "Second Next")
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when1, loc1 := getPosition(grp, t)
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t.Logf("when1: %q (%#x) %x", when1, loc1.PC, p.CurrentThread().ThreadID())
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if loc0.PC == loc1.PC {
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t.Fatalf("next did not move process %#x", loc0.PC)
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}
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if when0 == when1 {
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t.Fatalf("output of when did not change after next: %q", when0)
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}
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// Move back to checkpoint, check that the output of 'when' is the same as
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// what it was when we set the breakpoint
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grp.Restart(fmt.Sprintf("c%d", cpid))
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g, _ := proc.FindGoroutine(p, 1)
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p.SwitchGoroutine(g)
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when2, loc2 := getPosition(grp, t)
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t.Logf("when2: %q (%#x) %x", when2, loc2.PC, p.CurrentThread().ThreadID())
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if loc2.PC != loc0.PC {
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t.Fatalf("PC address mismatch %#x != %#x", loc0.PC, loc2.PC)
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}
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if when0 != when2 {
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t.Fatalf("output of when mismatched %q != %q", when0, when2)
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}
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// Move forward with next again, check that the output of 'when' matches
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assertNoError(grp.Next(), t, "First Next")
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assertNoError(grp.Next(), t, "Second Next")
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when3, loc3 := getPosition(grp, t)
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t.Logf("when3: %q (%#x)", when3, loc3.PC)
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if loc3.PC != loc1.PC {
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t.Fatalf("PC address mismatch %#x != %#x", loc1.PC, loc3.PC)
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}
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if when3 != when1 {
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t.Fatalf("when output mismatch %q != %q", when1, when3)
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}
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// Delete breakpoint, move back to checkpoint then next twice and check
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// output of 'when' again
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err = p.ClearBreakpoint(bp.Addr)
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assertNoError(err, t, "ClearBreakpoint")
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grp.Restart(fmt.Sprintf("c%d", cpid))
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g, _ = proc.FindGoroutine(p, 1)
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p.SwitchGoroutine(g)
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assertNoError(grp.Next(), t, "First Next")
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assertNoError(grp.Next(), t, "Second Next")
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when4, loc4 := getPosition(grp, t)
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t.Logf("when4: %q (%#x)", when4, loc4.PC)
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if loc4.PC != loc1.PC {
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t.Fatalf("PC address mismatch %#x != %#x", loc1.PC, loc4.PC)
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}
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if when4 != when1 {
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t.Fatalf("when output mismatch %q != %q", when1, when4)
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}
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// Delete checkpoint, check that the list of checkpoints is updated
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assertNoError(grp.ClearCheckpoint(cpid), t, "ClearCheckpoint")
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checkpoints, err = grp.Checkpoints()
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assertNoError(err, t, "Checkpoints")
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if len(checkpoints) != 0 {
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t.Fatalf("wrong number of checkpoints %v (zero expected)", checkpoints)
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}
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})
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}
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func TestIssue1376(t *testing.T) {
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// Backward Continue should terminate when it encounters the start of the process.
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protest.AllowRecording(t)
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withTestRecording("continuetestprog", t, func(grp *proc.TargetGroup, fixture protest.Fixture) {
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p := grp.Selected
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bp := setFunctionBreakpoint(p, t, "main.main")
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assertNoError(grp.Continue(), t, "Continue (forward)")
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err := p.ClearBreakpoint(bp.Addr)
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assertNoError(err, t, "ClearBreakpoint")
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assertNoError(grp.ChangeDirection(proc.Backward), t, "Switching to backward direction")
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assertNoError(grp.Continue(), t, "Continue (backward)")
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})
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}
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