manager, fakeRuntime := newRealImageGCManager(ImageGCPolicy{}, mockStatsProvider)
	fakeRuntime.ImageList = []container.Image{
		{
			ID:     sandboxImage,
			Size:   1024,
			Pinned: true,
		},
	}

	err := manager.DeleteUnusedImages(ctx)
	assert := assert.New(t)
	assert.Len(fakeRuntime.ImageList, 1)
	require.NoError(t, err)
}

func TestDeletePinnedImage(t *testing.T) {

	f.CalledFunctions = append(f.CalledFunctions, "RemoveImage")
	index := 0
	for i := range f.ImageList {
		if f.ImageList[i].ID == image.Image {
			index = i
			break
		}
	}
	f.ImageList = append(f.ImageList[:index], f.ImageList[index+1:]...)

	return f.Err
}

func (f *FakeRuntime) GarbageCollect(_ context.Context, gcPolicy kubecontainer.GCPolicy, ready bool, evictNonDeletedPods bool) error {

	imagesPinned := map[string]bool{
		"1111": false,
		"2222": true,
		"3333": false,
	}
	imageList := []string{}
	for image, pinned := range imagesPinned {
		fakeImageService.SetFakeImagePinned(image, pinned)
		imageList = append(imageList, image)
	}
	fakeImageService.SetFakeImages(imageList)

	actualImages, err := fakeManager.ListImages(ctx)
	assert.NoError(t, err)
	for _, image := range actualImages {

	}
	return images
}

func makeExpectedImageList(imageList []kubecontainer.Image, maxImages, maxNames int32) []v1.ContainerImage {
	// copy the imageList, we do not want to mutate it in-place and accidentally edit a test case
	images := make([]kubecontainer.Image, len(imageList))
	copy(images, imageList)
	// sort images by size
	sort.Sort(sliceutils.ByImageSize(images))

	fakeClock = testingclock.NewFakeClock(time.Now())
	backOff.Clock = fakeClock

	fakeRuntime = &ctest.FakeRuntime{T: t}
	fakeRecorder := &record.FakeRecorder{}

	fakeRuntime.ImageList = []Image{{ID: "present_image:latest"}}
	fakeRuntime.Err = c.pullerErr
	fakeRuntime.InspectErr = c.inspectErr

	fakePodPullingTimeRecorder = &mockPodPullingTimeRecorder{}

	return imageList, expectedImageList
}

func makeExpectedImageList(imageList []kubecontainer.Image, maxImages int) []v1.ContainerImage {
	// expectedImageList is generated by imageList according to size and maxImages
	// 1. sort the imageList by size
	sort.Sort(sliceutils.ByImageSize(imageList))
	// 2. convert sorted imageList to v1.ContainerImage list
	var expectedImageList []v1.ContainerImage
	for _, kubeImage := range imageList {

	}
}

func TestPodVolumeDeadlineAttachAndMount(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping test in short mode.")
	}

	testKubelet := newTestKubeletWithImageList(t, nil /*imageList*/, false, /* controllerAttachDetachEnabled */
		false /*initFakeVolumePlugin*/, true /*localStorageCapacityIsolation*/)

	defer testKubelet.Cleanup()
	kubelet := testKubelet.kubelet

	}

	// Perform parallel pulls.
	if !ipc.imagePullSerial {
		if err := ipc.runtime.PullImagesInParallel(ipc.imageList, policy == v1.PullIfNotPresent); err != nil {
			errorList = append(errorList, err)
		}
		return warnings, errorList
	}

	// Perform serial pulls.
	for _, image := range ipc.imageList {
		switch policy {
		case v1.PullIfNotPresent:
			if ipc.runtime.ImageExists(image) {

}

func newTestKubeletWithImageList(
	t *testing.T,
	imageList []kubecontainer.Image,
	controllerAttachDetachEnabled bool,
	initFakeVolumePlugin bool,
	localStorageCapacityIsolation bool,
) *TestKubelet {
	logger, _ := ktesting.NewTestContext(t)

	fakeRuntime := &containertest.FakeRuntime{
		ImageList: imageList,
		// Set ready conditions by default.
		RuntimeStatus: &kubecontainer.RuntimeStatus{