make e2e TestKillChildOnCancel exec properly on windows

tests/e2e/e2e_test.go

@@ -109,7 +109,7 @@ func (s *E2eSuite) TestSetupError() {
 
 func (s *E2eSuite) TestKillChildOnCancel() {
 	It("should kill docker-classic if parent command is cancelled", func() {
-		out := s.NewCommand("ps", "-x").ExecOrDie()
+		out := s.ListProcessesCommand().ExecOrDie()
 		Expect(out).NotTo(ContainSubstring("docker-classic"))
 
 		dir := s.ConfigDir
@@ -122,16 +122,16 @@ RUN sleep 100`), 0644)).To(Succeed())
 			_, err := ctx.Exec()
 			errs <- err
 		}()
-		err := WaitFor(time.Second, 3*time.Second, errs, func() bool {
-			out := s.NewCommand("ps", "-x").ExecOrDie()
+		err := WaitFor(time.Second, 10*time.Second, errs, func() bool {
+			out := s.ListProcessesCommand().ExecOrDie()
 			return strings.Contains(out, "docker-classic")
 		})
 		Expect(err).NotTo(HaveOccurred())
 		log.Println("Killing docker process")
 
 		close(shutdown)
-		err = WaitFor(time.Second, 4*time.Second, nil, func() bool {
-			out := s.NewCommand("ps", "-x").ExecOrDie()
+		err = WaitFor(time.Second, 12*time.Second, nil, func() bool {
+			out := s.ListProcessesCommand().ExecOrDie()
 			return !strings.Contains(out, "docker-classic")
 		})
 		Expect(err).NotTo(HaveOccurred())

tests/framework/exec.go

@@ -32,6 +32,7 @@ import (
 	"fmt"
 	"io"
 	"os/exec"
+	"runtime"
 	"strings"
 	"syscall"
 	"time"
@@ -176,7 +177,7 @@ func Execute(cmd *exec.Cmd, timeout <-chan time.Time) (string, error) {
 		}
 	case <-timeout:
 		log.Debugf("%s %s timed-out", cmd.Path, strings.Join(cmd.Args[1:], " "))
-		if err := cmd.Process.Signal(syscall.SIGTERM); err != nil {
+		if err := terminateProcess(cmd); err != nil {
 			return "", err
 		}
 		return "", fmt.Errorf(
@@ -189,6 +190,13 @@ func Execute(cmd *exec.Cmd, timeout <-chan time.Time) (string, error) {
 	return stdout.String(), nil
 }
 
+func terminateProcess(cmd *exec.Cmd) error {
+	if runtime.GOOS == "windows" {
+		return cmd.Process.Kill()
+	}
+	return cmd.Process.Signal(syscall.SIGTERM)
+}
+
 func mergeWriter(other io.Writer, buf io.Writer) io.Writer {
 	if other != nil {
 		return io.MultiWriter(other, buf)

tests/framework/suite.go

@@ -107,6 +107,14 @@ func (s *Suite) AfterTest(suite, test string) {
 	_ = os.RemoveAll(s.ConfigDir)
 }
 
+// ListProcessesCommand creates a command to list processes, "tasklist" on windows, "ps" otherwise.
+func (s *Suite) ListProcessesCommand() *CmdContext {
+	if runtime.GOOS == "windows" {
+		return s.NewCommand("tasklist")
+	}
+	return s.NewCommand("ps")
+}
+
 // NewCommand creates a command context.
 func (s *Suite) NewCommand(command string, args ...string) *CmdContext {
 	return &CmdContext{