Add test for killing a long lived exec process

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

integration-test/exec_test.go

@@ -1,6 +1,9 @@
 package main
 
 import (
+	"path/filepath"
+	"syscall"
+
 	"github.com/docker/containerd/api/grpc/types"
 	"github.com/docker/docker/pkg/integration/checker"
 	"github.com/go-check/check"
@@ -54,3 +57,63 @@ func (cs *ContainerdSuite) TestBusyboxTopExecEcho(t *check.C) {
 
 	t.Assert(echop.io.stdoutBuffer.String(), checker.Equals, "Ay Caramba!")
 }
+
+func (cs *ContainerdSuite) TestBusyboxTopExecTop(t *check.C) {
+	bundleName := "busybox-top"
+	if err := CreateBusyboxBundle(bundleName, []string{"top"}); err != nil {
+		t.Fatal(err)
+	}
+
+	var (
+		err   error
+		initp *containerProcess
+	)
+
+	containerId := "top"
+	initp, err = cs.StartContainer(containerId, bundleName)
+	t.Assert(err, checker.Equals, nil)
+
+	execId := "top1"
+	_, err = cs.AddProcessToContainer(initp, execId, "/", []string{"PATH=/usr/bin"}, []string{"top"}, 0, 0)
+	t.Assert(err, checker.Equals, nil)
+
+	for idx, evt := range []types.Event{
+		{
+			Type:   "start-container",
+			Id:     containerId,
+			Status: 0,
+			Pid:    "",
+		},
+		{
+			Type:   "start-process",
+			Id:     containerId,
+			Status: 0,
+			Pid:    execId,
+		},
+		{
+			Type:   "exit",
+			Id:     containerId,
+			Status: 137,
+			Pid:    execId,
+		},
+	} {
+		ch := initp.GetEventsChannel()
+		e := <-ch
+		evt.Timestamp = e.Timestamp
+		t.Assert(*e, checker.Equals, evt)
+		if idx == 1 {
+			// Process Started, kill it
+			cs.SignalContainerProcess(containerId, "top1", uint32(syscall.SIGKILL))
+		}
+	}
+
+	// Container should still be running
+	containers, err := cs.ListRunningContainers()
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Assert(len(containers), checker.Equals, 1)
+	t.Assert(containers[0].Id, checker.Equals, "top")
+	t.Assert(containers[0].Status, checker.Equals, "running")
+	t.Assert(containers[0].BundlePath, check.Equals, filepath.Join(cs.cwd, GetBundle(bundleName).Path))
+}