func createFakeRuntimeCache(fakeRecorder *record.FakeRecorder) qingcontainer.RuntimeCache {
	fakeDocker := &dockertools.FakeDockerClient{}
	np, _ := network.InitNetworkPlugin([]network.NetworkPlugin{}, "", network.NewFakeHost(nil))
	dockerManager := dockertools.NewFakeDockerManager(fakeDocker, fakeRecorder, nil, nil, dockertools.PodInfraContainerImage, 0, 0, "", qingcontainer.FakeOS{}, np, nil, nil, newQingletRuntimeHooks(fakeRecorder))
	return qingcontainer.NewFakeRuntimeCache(dockerManager)
}
// TestFakePodWorkers verifies that the fakePodWorkers behaves the same way as the real podWorkers
// for their invocation of the syncPodFn.
func TestFakePodWorkers(t *testing.T) {
	// Create components for pod workers.
	fakeDocker := &dockertools.FakeDockerClient{}
	fakeRecorder := &record.FakeRecorder{}
	np, _ := network.InitNetworkPlugin([]network.NetworkPlugin{}, "", network.NewFakeHost(nil))
	dockerManager := dockertools.NewFakeDockerManager(fakeDocker, fakeRecorder, nil, nil, dockertools.PodInfraContainerImage, 0, 0, "", qingcontainer.FakeOS{}, np, nil, nil, newQingletRuntimeHooks(fakeRecorder))
	fakeRuntimeCache := qingcontainer.NewFakeRuntimeCache(dockerManager)

	qingletForRealWorkers := &simpleFakeQinglet{}
	qingletForFakeWorkers := &simpleFakeQinglet{}

	realPodWorkers := newPodWorkers(fakeRuntimeCache, qingletForRealWorkers.syncPodWithWaitGroup, fakeRecorder)
	fakePodWorkers := &fakePodWorkers{qingletForFakeWorkers.syncPod, fakeRuntimeCache, t}

	tests := []struct {
		pod                    *api.Pod
		mirrorPod              *api.Pod
		containerList          []docker.APIContainers
		containersInRunningPod int
	}{
		{
			&api.Pod{},
			&api.Pod{},
			[]docker.APIContainers{},
			0,
		},

		{
			&api.Pod{
				ObjectMeta: api.ObjectMeta{
					UID:       "12345678",
					Name:      "foo",
					Namespace: "new",
				},
				Spec: api.PodSpec{
					Containers: []api.Container{
						{
							Name: "fooContainer",
						},
					},
				},
			},
			&api.Pod{
				ObjectMeta: api.ObjectMeta{
					UID:       "12345678",
					Name:      "fooMirror",
					Namespace: "new",
				},
				Spec: api.PodSpec{
					Containers: []api.Container{
						{
							Name: "fooContainerMirror",
						},
					},
				},
			},
			[]docker.APIContainers{
				{
					// format is // k8s_<container-id>_<pod-fullname>_<pod-uid>_<random>
					Names: []string{"/k8s_bar.hash123_foo_new_12345678_0"},
					ID:    "1234",
				},
				{
					// pod infra container
					Names: []string{"/k8s_POD.hash123_foo_new_12345678_0"},
					ID:    "9876",
				},
			},
			2,
		},

		{
			&api.Pod{
				ObjectMeta: api.ObjectMeta{
					UID:       "98765",
					Name:      "bar",
					Namespace: "new",
				},
				Spec: api.PodSpec{
					Containers: []api.Container{
						{
							Name: "fooContainer",
						},
					},
				},
			},
			&api.Pod{
				ObjectMeta: api.ObjectMeta{
					UID:       "98765",
					Name:      "fooMirror",
					Namespace: "new",
				},
				Spec: api.PodSpec{
					Containers: []api.Container{
						{
							Name: "fooContainerMirror",
						},
					},
				},
			},
			[]docker.APIContainers{
				{
					// format is // k8s_<container-id>_<pod-fullname>_<pod-uid>_<random>
					Names: []string{"/k8s_bar.hash123_bar_new_98765_0"},
					ID:    "1234",
				},
				{
					// pod infra container
					Names: []string{"/k8s_POD.hash123_foo_new_12345678_0"},
					ID:    "9876",
				},
			},
			1,
		},

		// Empty running pod.
		{
			&api.Pod{
				ObjectMeta: api.ObjectMeta{
					UID:       "98765",
					Name:      "baz",
					Namespace: "new",
				},
				Spec: api.PodSpec{
					Containers: []api.Container{
						{
							Name: "bazContainer",
						},
					},
				},
			},
			&api.Pod{
				ObjectMeta: api.ObjectMeta{
					UID:       "98765",
					Name:      "bazMirror",
					Namespace: "new",
				},
				Spec: api.PodSpec{
					Containers: []api.Container{
						{
							Name: "bazContainerMirror",
						},
					},
				},
			},
			[]docker.APIContainers{
				{
					// format is // k8s_<container-id>_<pod-fullname>_<pod-uid>_<random>
					Names: []string{"/k8s_bar.hash123_bar_new_12345678_0"},
					ID:    "1234",
				},
				{
					// pod infra container
					Names: []string{"/k8s_POD.hash123_foo_new_12345678_0"},
					ID:    "9876",
				},
			},
			0,
		},
	}

	for i, tt := range tests {
		qingletForRealWorkers.wg.Add(1)

		fakeDocker.ContainerList = tt.containerList
		realPodWorkers.UpdatePod(tt.pod, tt.mirrorPod, func() {})
		fakePodWorkers.UpdatePod(tt.pod, tt.mirrorPod, func() {})

		qingletForRealWorkers.wg.Wait()

		if !reflect.DeepEqual(qingletForRealWorkers.pod, qingletForFakeWorkers.pod) {
			t.Errorf("%d: Expected: %#v, Actual: %#v", i, qingletForRealWorkers.pod, qingletForFakeWorkers.pod)
		}

		if !reflect.DeepEqual(qingletForRealWorkers.mirrorPod, qingletForFakeWorkers.mirrorPod) {
			t.Errorf("%d: Expected: %#v, Actual: %#v", i, qingletForRealWorkers.mirrorPod, qingletForFakeWorkers.mirrorPod)
		}

		if tt.containersInRunningPod != len(qingletForFakeWorkers.runningPod.Containers) {
			t.Errorf("%d: Expected: %#v, Actual: %#v", i, tt.containersInRunningPod, len(qingletForFakeWorkers.runningPod.Containers))
		}

		sort.Sort(byContainerName(qingletForRealWorkers.runningPod))
		sort.Sort(byContainerName(qingletForFakeWorkers.runningPod))
		if !reflect.DeepEqual(qingletForRealWorkers.runningPod, qingletForFakeWorkers.runningPod) {
			t.Errorf("%d: Expected: %#v, Actual: %#v", i, qingletForRealWorkers.runningPod, qingletForFakeWorkers.runningPod)
		}
	}
}