func TestUpdateSpec(t *testing.T) {
	spec := itest.GenerateRandomContainerSpec(4)
	cd, mockHandler, _ := newTestContainerData(t)
	mockHandler.On("GetSpec").Return(
		spec,
		nil,
	)

	err := cd.updateSpec()
	if err != nil {
		t.Fatal(err)
	}

	mockHandler.AssertExpectations(t)
}

func TestGetInfo(t *testing.T) {
	spec := itest.GenerateRandomContainerSpec(4)
	subcontainers := []info.ContainerReference{
		{Name: "/container/ee0103"},
		{Name: "/container/abcd"},
		{Name: "/container/something"},
	}
	cd, mockHandler, _ := setupContainerData(t, spec)
	mockHandler.On("ListContainers", container.ListSelf).Return(
		subcontainers,
		nil,
	)
	mockHandler.Aliases = []string{"a1", "a2"}

	info, err := cd.GetInfo()
	if err != nil {
		t.Fatal(err)
	}

	mockHandler.AssertExpectations(t)

	if len(info.Subcontainers) != len(subcontainers) {
		t.Errorf("Received %v subcontainers, should be %v", len(info.Subcontainers), len(subcontainers))
	}

	for _, sub := range info.Subcontainers {
		found := false
		for _, sub2 := range subcontainers {
			if sub.Name == sub2.Name {
				found = true
			}
		}
		if !found {
			t.Errorf("Received unknown sub container %v", sub)
		}
	}

	if !reflect.DeepEqual(spec, info.Spec) {
		t.Errorf("received wrong container spec")
	}

	if info.Name != mockHandler.Name {
		t.Errorf("received wrong container name: received %v; should be %v", info.Name, mockHandler.Name)
	}
}

func createManagerAndAddContainers(
	memoryStorage *memory.InMemoryStorage,
	sysfs *fakesysfs.FakeSysFs,
	containers []string,
	f func(*container.MockContainerHandler),
	t *testing.T,
) *manager {
	container.ClearContainerHandlerFactories()
	mif := &manager{
		containers:    make(map[namespacedContainerName]*containerData),
		quitChannels:  make([]chan error, 0, 2),
		memoryStorage: memoryStorage,
	}
	for _, name := range containers {
		mockHandler := container.NewMockContainerHandler(name)
		spec := itest.GenerateRandomContainerSpec(4)
		mockHandler.On("GetSpec").Return(
			spec,
			nil,
		).Once()
		cont, err := newContainerData(name, memoryStorage, mockHandler, nil, false)
		if err != nil {
			t.Fatal(err)
		}
		mif.containers[namespacedContainerName{
			Name: name,
		}] = cont
		// Add Docker containers under their namespace.
		if strings.HasPrefix(name, "/docker") {
			mif.containers[namespacedContainerName{
				Namespace: docker.DockerNamespace,
				Name:      strings.TrimPrefix(name, "/docker/"),
			}] = cont
		}
		f(mockHandler)
	}
	return mif
}

// Create a containerData instance for a test and add a default GetSpec mock.
func newTestContainerData(t *testing.T) (*containerData, *container.MockContainerHandler, *memory.InMemoryCache) {
	spec := itest.GenerateRandomContainerSpec(4)
	ret, mockHandler, memoryCache := setupContainerData(t, spec)
	return ret, mockHandler, memoryCache
}