Ensure process is stopped before detaching in tests

proc/proc_test.go

@@ -26,7 +26,10 @@ func withTestProcess(name string, t *testing.T, fn func(p *Process, fixture prot
 		t.Fatal("Launch():", err)
 	}
 
-	defer p.Detach(true)
+	defer func() {
+		p.Halt()
+		p.Detach(true)
+	}()
 
 	fn(p, fixture)
 }

service/test/integration_test.go

@@ -35,7 +35,10 @@ func withTestClient(name string, t *testing.T, fn func(c service.Client)) {
 	}, false)
 	go server.Run()
 	client := rpc.NewClient(listener.Addr().String())
-	defer client.Detach(true)
+	defer func() {
+		client.Detach(true)
+	}()
+
 	fn(client)
 }