func TestHTTPContainerInfoGetterGetRootInfoWithError(t *testing.T) {
	req := &cadvisorApi.ContainerInfoRequest{
		NumStats: 10,
	}
	cinfo := cadvisorApiTest.GenerateRandomContainerInfo(
		"dockerIDWhichWillNotBeChecked", // docker ID
		2, // Number of cores
		req,
		1*time.Second,
	)
	testHTTPContainerInfoGetter(req, cinfo, "", "", http.StatusNotFound, t)
}

func TestHTTPContainerInfoGetterGetContainerInfoSuccessfully(t *testing.T) {
	req := &cadvisorApi.ContainerInfoRequest{
		NumStats: 10,
	}
	cinfo := cadvisorApiTest.GenerateRandomContainerInfo(
		"dockerIDWhichWillNotBeChecked", // docker ID
		2, // Number of cores
		req,
		1*time.Second,
	)
	testHTTPContainerInfoGetter(req, cinfo, "somePodID", "containerNameInK8S", 0, t)
}

func TestGetSubcontainersInfo(t *testing.T) {
	query := &info.ContainerInfoRequest{
		NumStats: 3,
	}
	containerName := "/some/container"
	cinfo := itest.GenerateRandomContainerInfo(containerName, 4, query, 1*time.Second)
	cinfo1 := itest.GenerateRandomContainerInfo(path.Join(containerName, "sub1"), 4, query, 1*time.Second)
	cinfo2 := itest.GenerateRandomContainerInfo(path.Join(containerName, "sub2"), 4, query, 1*time.Second)
	response := []info.ContainerInfo{
		*cinfo,
		*cinfo1,
		*cinfo2,
	}
	client, server, err := cadvisorTestClient(fmt.Sprintf("/api/v1.3/subcontainers%v", containerName), query, response, t)
	if err != nil {
		t.Fatalf("unable to get a client %v", err)
	}
	defer server.Close()
	returned, err := client.SubcontainersInfo(containerName, query)
	if err != nil {
		t.Fatal(err)
	}

	if len(returned) != 3 {
		t.Errorf("unexpected number of results: got %d, expected 3", len(returned))
	}
	if !returned[0].Eq(cinfo) {
		t.Error("received unexpected ContainerInfo")
	}
	if !returned[1].Eq(cinfo1) {
		t.Error("received unexpected ContainerInfo")
	}
	if !returned[2].Eq(cinfo2) {
		t.Error("received unexpected ContainerInfo")
	}
}

// Expect a manager with the specified containers and query. Returns the manager, map of ContainerInfo objects,
// and map of MockContainerHandler objects.}
func expectManagerWithContainers(containers []string, query *info.ContainerInfoRequest, t *testing.T) (*manager, map[string]*info.ContainerInfo, map[string]*container.MockContainerHandler) {
	infosMap := make(map[string]*info.ContainerInfo, len(containers))
	handlerMap := make(map[string]*container.MockContainerHandler, len(containers))

	for _, container := range containers {
		infosMap[container] = itest.GenerateRandomContainerInfo(container, 4, query, 1*time.Second)
	}

	memoryStorage := memory.New(query.NumStats, nil)
	sysfs := &fakesysfs.FakeSysFs{}
	m := createManagerAndAddContainers(
		memoryStorage,
		sysfs,
		containers,
		func(h *container.MockContainerHandler) {
			cinfo := infosMap[h.Name]
			ref, err := h.ContainerReference()
			if err != nil {
				t.Error(err)
			}
			for _, stat := range cinfo.Stats {
				err = memoryStorage.AddStats(ref, stat)
				if err != nil {
					t.Error(err)
				}
			}
			spec := cinfo.Spec

			h.On("ListContainers", container.ListSelf).Return(
				[]info.ContainerReference(nil),
				nil,
			)
			h.On("GetSpec").Return(
				spec,
				nil,
			)
			handlerMap[h.Name] = h
		},
		t,
	)

	return m, infosMap, handlerMap
}

// TestGetContainerInfo generates a random container information object
// and then checks that ContainerInfo returns the expected result.
func TestGetContainerInfo(t *testing.T) {
	query := &info.ContainerInfoRequest{
		NumStats: 3,
	}
	containerName := "/some/container"
	cinfo := itest.GenerateRandomContainerInfo(containerName, 4, query, 1*time.Second)
	client, server, err := cadvisorTestClient(fmt.Sprintf("/api/v1.3/containers%v", containerName), query, cinfo, t)
	if err != nil {
		t.Fatalf("unable to get a client %v", err)
	}
	defer server.Close()
	returned, err := client.ContainerInfo(containerName, query)
	if err != nil {
		t.Fatal(err)
	}

	if !returned.Eq(cinfo) {
		t.Error("received unexpected ContainerInfo")
	}
}