Reduce kubelet LOC: extract cadvisor

pkg/kubelet/kubelet.go

@@ -33,7 +33,6 @@ import (
 
 	"github.com/golang/glog"
 	cadvisorapi "github.com/google/cadvisor/info/v1"
-	cadvisorapiv2 "github.com/google/cadvisor/info/v2"
 	"k8s.io/kubernetes/pkg/api"
 	apierrors "k8s.io/kubernetes/pkg/api/errors"
 	utilpod "k8s.io/kubernetes/pkg/api/pod"
@@ -3533,71 +3532,6 @@ func (kl *Kubelet) ResyncInterval() time.Duration {
 	return kl.resyncInterval
 }
 
-// GetContainerInfo returns stats (from Cadvisor) for a container.
-func (kl *Kubelet) GetContainerInfo(podFullName string, podUID types.UID, containerName string, req *cadvisorapi.ContainerInfoRequest) (*cadvisorapi.ContainerInfo, error) {
-
-	podUID = kl.podManager.TranslatePodUID(podUID)
-
-	pods, err := kl.runtimeCache.GetPods()
-	if err != nil {
-		return nil, err
-	}
-	pod := kubecontainer.Pods(pods).FindPod(podFullName, podUID)
-	container := pod.FindContainerByName(containerName)
-	if container == nil {
-		return nil, kubecontainer.ErrContainerNotFound
-	}
-
-	ci, err := kl.cadvisor.DockerContainer(container.ID.ID, req)
-	if err != nil {
-		return nil, err
-	}
-	return &ci, nil
-}
-
-// GetContainerInfoV2 returns stats (from Cadvisor) for containers.
-func (kl *Kubelet) GetContainerInfoV2(name string, options cadvisorapiv2.RequestOptions) (map[string]cadvisorapiv2.ContainerInfo, error) {
-	return kl.cadvisor.ContainerInfoV2(name, options)
-}
-
-// DockerImagesFsInfo returns information about docker image fs usage from
-// cadvisor.
-func (kl *Kubelet) DockerImagesFsInfo() (cadvisorapiv2.FsInfo, error) {
-	return kl.cadvisor.DockerImagesFsInfo()
-}
-
-// RootFsInfo returns info about the root fs from cadvisor.
-func (kl *Kubelet) RootFsInfo() (cadvisorapiv2.FsInfo, error) {
-	return kl.cadvisor.RootFsInfo()
-}
-
-// Returns stats (from Cadvisor) for a non-Kubernetes container.
-func (kl *Kubelet) GetRawContainerInfo(containerName string, req *cadvisorapi.ContainerInfoRequest, subcontainers bool) (map[string]*cadvisorapi.ContainerInfo, error) {
-	if subcontainers {
-		return kl.cadvisor.SubcontainerInfo(containerName, req)
-	} else {
-		containerInfo, err := kl.cadvisor.ContainerInfo(containerName, req)
-		if err != nil {
-			return nil, err
-		}
-		return map[string]*cadvisorapi.ContainerInfo{
-			containerInfo.Name: containerInfo,
-		}, nil
-	}
-}
-
-// GetCachedMachineInfo assumes that the machine info can't change without a reboot
-func (kl *Kubelet) GetCachedMachineInfo() (*cadvisorapi.MachineInfo, error) {
-	if kl.machineInfo == nil {
-		info, err := kl.cadvisor.MachineInfo()
-		if err != nil {
-			return nil, err
-		}
-		kl.machineInfo = info
-	}
-	return kl.machineInfo, nil
-}
-
 // ListenAndServe runs the kubelet HTTP server.
 func (kl *Kubelet) ListenAndServe(address net.IP, port uint, tlsOptions *server.TLSOptions, auth server.AuthInterface, enableDebuggingHandlers bool) {
 	server.ListenAndServeKubeletServer(kl, kl.resourceAnalyzer, address, port, tlsOptions, auth, enableDebuggingHandlers, kl.containerRuntime)

pkg/kubelet/kubelet_cadvisor.go

@@ -0,0 +1,89 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package kubelet
+
+import (
+	cadvisorapi "github.com/google/cadvisor/info/v1"
+	cadvisorapiv2 "github.com/google/cadvisor/info/v2"
+	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
+	"k8s.io/kubernetes/pkg/types"
+)
+
+// GetContainerInfo returns stats (from Cadvisor) for a container.
+func (kl *Kubelet) GetContainerInfo(podFullName string, podUID types.UID, containerName string, req *cadvisorapi.ContainerInfoRequest) (*cadvisorapi.ContainerInfo, error) {
+
+	podUID = kl.podManager.TranslatePodUID(podUID)
+
+	pods, err := kl.runtimeCache.GetPods()
+	if err != nil {
+		return nil, err
+	}
+	pod := kubecontainer.Pods(pods).FindPod(podFullName, podUID)
+	container := pod.FindContainerByName(containerName)
+	if container == nil {
+		return nil, kubecontainer.ErrContainerNotFound
+	}
+
+	ci, err := kl.cadvisor.DockerContainer(container.ID.ID, req)
+	if err != nil {
+		return nil, err
+	}
+	return &ci, nil
+}
+
+// GetContainerInfoV2 returns stats (from Cadvisor) for containers.
+func (kl *Kubelet) GetContainerInfoV2(name string, options cadvisorapiv2.RequestOptions) (map[string]cadvisorapiv2.ContainerInfo, error) {
+	return kl.cadvisor.ContainerInfoV2(name, options)
+}
+
+// DockerImagesFsInfo returns information about docker image fs usage from
+// cadvisor.
+func (kl *Kubelet) DockerImagesFsInfo() (cadvisorapiv2.FsInfo, error) {
+	return kl.cadvisor.DockerImagesFsInfo()
+}
+
+// RootFsInfo returns info about the root fs from cadvisor.
+func (kl *Kubelet) RootFsInfo() (cadvisorapiv2.FsInfo, error) {
+	return kl.cadvisor.RootFsInfo()
+}
+
+// Returns stats (from Cadvisor) for a non-Kubernetes container.
+func (kl *Kubelet) GetRawContainerInfo(containerName string, req *cadvisorapi.ContainerInfoRequest, subcontainers bool) (map[string]*cadvisorapi.ContainerInfo, error) {
+	if subcontainers {
+		return kl.cadvisor.SubcontainerInfo(containerName, req)
+	} else {
+		containerInfo, err := kl.cadvisor.ContainerInfo(containerName, req)
+		if err != nil {
+			return nil, err
+		}
+		return map[string]*cadvisorapi.ContainerInfo{
+			containerInfo.Name: containerInfo,
+		}, nil
+	}
+}
+
+// GetCachedMachineInfo assumes that the machine info can't change without a reboot
+func (kl *Kubelet) GetCachedMachineInfo() (*cadvisorapi.MachineInfo, error) {
+	if kl.machineInfo == nil {
+		info, err := kl.cadvisor.MachineInfo()
+		if err != nil {
+			return nil, err
+		}
+		kl.machineInfo = info
+	}
+	return kl.machineInfo, nil
+}

pkg/kubelet/kubelet_cadvisor_test.go

@@ -0,0 +1,232 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package kubelet
+
+import (
+	"fmt"
+	"testing"
+
+	cadvisorapi "github.com/google/cadvisor/info/v1"
+	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
+)
+
+func TestGetContainerInfo(t *testing.T) {
+	containerID := "ab2cdf"
+	containerPath := fmt.Sprintf("/docker/%v", containerID)
+	containerInfo := cadvisorapi.ContainerInfo{
+		ContainerReference: cadvisorapi.ContainerReference{
+			Name: containerPath,
+		},
+	}
+
+	testKubelet := newTestKubelet(t)
+	fakeRuntime := testKubelet.fakeRuntime
+	kubelet := testKubelet.kubelet
+	cadvisorReq := &cadvisorapi.ContainerInfoRequest{}
+	mockCadvisor := testKubelet.fakeCadvisor
+	mockCadvisor.On("DockerContainer", containerID, cadvisorReq).Return(containerInfo, nil)
+	fakeRuntime.PodList = []*kubecontainer.Pod{
+		{
+			ID:        "12345678",
+			Name:      "qux",
+			Namespace: "ns",
+			Containers: []*kubecontainer.Container{
+				{
+					Name: "foo",
+					ID:   kubecontainer.ContainerID{Type: "test", ID: containerID},
+				},
+			},
+		},
+	}
+	stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", cadvisorReq)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if stats == nil {
+		t.Fatalf("stats should not be nil")
+	}
+	mockCadvisor.AssertExpectations(t)
+}
+
+func TestGetRawContainerInfoRoot(t *testing.T) {
+	containerPath := "/"
+	containerInfo := &cadvisorapi.ContainerInfo{
+		ContainerReference: cadvisorapi.ContainerReference{
+			Name: containerPath,
+		},
+	}
+	testKubelet := newTestKubelet(t)
+	kubelet := testKubelet.kubelet
+	mockCadvisor := testKubelet.fakeCadvisor
+	cadvisorReq := &cadvisorapi.ContainerInfoRequest{}
+	mockCadvisor.On("ContainerInfo", containerPath, cadvisorReq).Return(containerInfo, nil)
+
+	_, err := kubelet.GetRawContainerInfo(containerPath, cadvisorReq, false)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	mockCadvisor.AssertExpectations(t)
+}
+
+func TestGetRawContainerInfoSubcontainers(t *testing.T) {
+	containerPath := "/kubelet"
+	containerInfo := map[string]*cadvisorapi.ContainerInfo{
+		containerPath: {
+			ContainerReference: cadvisorapi.ContainerReference{
+				Name: containerPath,
+			},
+		},
+		"/kubelet/sub": {
+			ContainerReference: cadvisorapi.ContainerReference{
+				Name: "/kubelet/sub",
+			},
+		},
+	}
+	testKubelet := newTestKubelet(t)
+	kubelet := testKubelet.kubelet
+	mockCadvisor := testKubelet.fakeCadvisor
+	cadvisorReq := &cadvisorapi.ContainerInfoRequest{}
+	mockCadvisor.On("SubcontainerInfo", containerPath, cadvisorReq).Return(containerInfo, nil)
+
+	result, err := kubelet.GetRawContainerInfo(containerPath, cadvisorReq, true)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if len(result) != 2 {
+		t.Errorf("Expected 2 elements, received: %+v", result)
+	}
+	mockCadvisor.AssertExpectations(t)
+}
+
+func TestGetContainerInfoWhenCadvisorFailed(t *testing.T) {
+	containerID := "ab2cdf"
+	testKubelet := newTestKubelet(t)
+	kubelet := testKubelet.kubelet
+	mockCadvisor := testKubelet.fakeCadvisor
+	fakeRuntime := testKubelet.fakeRuntime
+	cadvisorApiFailure := fmt.Errorf("cAdvisor failure")
+	containerInfo := cadvisorapi.ContainerInfo{}
+	cadvisorReq := &cadvisorapi.ContainerInfoRequest{}
+	mockCadvisor.On("DockerContainer", containerID, cadvisorReq).Return(containerInfo, cadvisorApiFailure)
+	fakeRuntime.PodList = []*kubecontainer.Pod{
+		{
+			ID:        "uuid",
+			Name:      "qux",
+			Namespace: "ns",
+			Containers: []*kubecontainer.Container{
+				{Name: "foo",
+					ID: kubecontainer.ContainerID{Type: "test", ID: containerID},
+				},
+			},
+		},
+	}
+	stats, err := kubelet.GetContainerInfo("qux_ns", "uuid", "foo", cadvisorReq)
+	if stats != nil {
+		t.Errorf("non-nil stats on error")
+	}
+	if err == nil {
+		t.Errorf("expect error but received nil error")
+		return
+	}
+	if err.Error() != cadvisorApiFailure.Error() {
+		t.Errorf("wrong error message. expect %v, got %v", cadvisorApiFailure, err)
+	}
+	mockCadvisor.AssertExpectations(t)
+}
+
+func TestGetContainerInfoOnNonExistContainer(t *testing.T) {
+	testKubelet := newTestKubelet(t)
+	kubelet := testKubelet.kubelet
+	mockCadvisor := testKubelet.fakeCadvisor
+	fakeRuntime := testKubelet.fakeRuntime
+	fakeRuntime.PodList = []*kubecontainer.Pod{}
+
+	stats, _ := kubelet.GetContainerInfo("qux", "", "foo", nil)
+	if stats != nil {
+		t.Errorf("non-nil stats on non exist container")
+	}
+	mockCadvisor.AssertExpectations(t)
+}
+
+func TestGetContainerInfoWhenContainerRuntimeFailed(t *testing.T) {
+	testKubelet := newTestKubelet(t)
+	kubelet := testKubelet.kubelet
+	mockCadvisor := testKubelet.fakeCadvisor
+	fakeRuntime := testKubelet.fakeRuntime
+	expectedErr := fmt.Errorf("List containers error")
+	fakeRuntime.Err = expectedErr
+
+	stats, err := kubelet.GetContainerInfo("qux", "", "foo", nil)
+	if err == nil {
+		t.Errorf("expected error from dockertools, got none")
+	}
+	if err.Error() != expectedErr.Error() {
+		t.Errorf("expected error %v got %v", expectedErr.Error(), err.Error())
+	}
+	if stats != nil {
+		t.Errorf("non-nil stats when dockertools failed")
+	}
+	mockCadvisor.AssertExpectations(t)
+}
+
+func TestGetContainerInfoWithNoContainers(t *testing.T) {
+	testKubelet := newTestKubelet(t)
+	kubelet := testKubelet.kubelet
+	mockCadvisor := testKubelet.fakeCadvisor
+
+	stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", nil)
+	if err == nil {
+		t.Errorf("expected error from cadvisor client, got none")
+	}
+	if err != kubecontainer.ErrContainerNotFound {
+		t.Errorf("expected error %v, got %v", kubecontainer.ErrContainerNotFound.Error(), err.Error())
+	}
+	if stats != nil {
+		t.Errorf("non-nil stats when dockertools returned no containers")
+	}
+	mockCadvisor.AssertExpectations(t)
+}
+
+func TestGetContainerInfoWithNoMatchingContainers(t *testing.T) {
+	testKubelet := newTestKubelet(t)
+	fakeRuntime := testKubelet.fakeRuntime
+	kubelet := testKubelet.kubelet
+	mockCadvisor := testKubelet.fakeCadvisor
+	fakeRuntime.PodList = []*kubecontainer.Pod{
+		{
+			ID:        "12345678",
+			Name:      "qux",
+			Namespace: "ns",
+			Containers: []*kubecontainer.Container{
+				{Name: "bar",
+					ID: kubecontainer.ContainerID{Type: "test", ID: "fakeID"},
+				},
+			}},
+	}
+
+	stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", nil)
+	if err == nil {
+		t.Errorf("Expected error from cadvisor client, got none")
+	}
+	if err != kubecontainer.ErrContainerNotFound {
+		t.Errorf("Expected error %v, got %v", kubecontainer.ErrContainerNotFound.Error(), err.Error())
+	}
+	if stats != nil {
+		t.Errorf("non-nil stats when dockertools returned no containers")
+	}
+	mockCadvisor.AssertExpectations(t)
+}

pkg/kubelet/kubelet_test.go

@@ -611,183 +611,6 @@ func TestMakeVolumeMounts(t *testing.T) {
 	}
 }
 
-func TestGetContainerInfo(t *testing.T) {
-	containerID := "ab2cdf"
-	containerPath := fmt.Sprintf("/docker/%v", containerID)
-	containerInfo := cadvisorapi.ContainerInfo{
-		ContainerReference: cadvisorapi.ContainerReference{
-			Name: containerPath,
-		},
-	}
-
-	testKubelet := newTestKubelet(t)
-	fakeRuntime := testKubelet.fakeRuntime
-	kubelet := testKubelet.kubelet
-	cadvisorReq := &cadvisorapi.ContainerInfoRequest{}
-	mockCadvisor := testKubelet.fakeCadvisor
-	mockCadvisor.On("DockerContainer", containerID, cadvisorReq).Return(containerInfo, nil)
-	fakeRuntime.PodList = []*kubecontainer.Pod{
-		{
-			ID:        "12345678",
-			Name:      "qux",
-			Namespace: "ns",
-			Containers: []*kubecontainer.Container{
-				{
-					Name: "foo",
-					ID:   kubecontainer.ContainerID{Type: "test", ID: containerID},
-				},
-			},
-		},
-	}
-	stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", cadvisorReq)
-	if err != nil {
-		t.Errorf("unexpected error: %v", err)
-	}
-	if stats == nil {
-		t.Fatalf("stats should not be nil")
-	}
-	mockCadvisor.AssertExpectations(t)
-}
-
-func TestGetRawContainerInfoRoot(t *testing.T) {
-	containerPath := "/"
-	containerInfo := &cadvisorapi.ContainerInfo{
-		ContainerReference: cadvisorapi.ContainerReference{
-			Name: containerPath,
-		},
-	}
-	testKubelet := newTestKubelet(t)
-	kubelet := testKubelet.kubelet
-	mockCadvisor := testKubelet.fakeCadvisor
-	cadvisorReq := &cadvisorapi.ContainerInfoRequest{}
-	mockCadvisor.On("ContainerInfo", containerPath, cadvisorReq).Return(containerInfo, nil)
-
-	_, err := kubelet.GetRawContainerInfo(containerPath, cadvisorReq, false)
-	if err != nil {
-		t.Errorf("unexpected error: %v", err)
-	}
-	mockCadvisor.AssertExpectations(t)
-}
-
-func TestGetRawContainerInfoSubcontainers(t *testing.T) {
-	containerPath := "/kubelet"
-	containerInfo := map[string]*cadvisorapi.ContainerInfo{
-		containerPath: {
-			ContainerReference: cadvisorapi.ContainerReference{
-				Name: containerPath,
-			},
-		},
-		"/kubelet/sub": {
-			ContainerReference: cadvisorapi.ContainerReference{
-				Name: "/kubelet/sub",
-			},
-		},
-	}
-	testKubelet := newTestKubelet(t)
-	kubelet := testKubelet.kubelet
-	mockCadvisor := testKubelet.fakeCadvisor
-	cadvisorReq := &cadvisorapi.ContainerInfoRequest{}
-	mockCadvisor.On("SubcontainerInfo", containerPath, cadvisorReq).Return(containerInfo, nil)
-
-	result, err := kubelet.GetRawContainerInfo(containerPath, cadvisorReq, true)
-	if err != nil {
-		t.Errorf("unexpected error: %v", err)
-	}
-	if len(result) != 2 {
-		t.Errorf("Expected 2 elements, received: %+v", result)
-	}
-	mockCadvisor.AssertExpectations(t)
-}
-
-func TestGetContainerInfoWhenCadvisorFailed(t *testing.T) {
-	containerID := "ab2cdf"
-	testKubelet := newTestKubelet(t)
-	kubelet := testKubelet.kubelet
-	mockCadvisor := testKubelet.fakeCadvisor
-	fakeRuntime := testKubelet.fakeRuntime
-	cadvisorApiFailure := fmt.Errorf("cAdvisor failure")
-	containerInfo := cadvisorapi.ContainerInfo{}
-	cadvisorReq := &cadvisorapi.ContainerInfoRequest{}
-	mockCadvisor.On("DockerContainer", containerID, cadvisorReq).Return(containerInfo, cadvisorApiFailure)
-	fakeRuntime.PodList = []*kubecontainer.Pod{
-		{
-			ID:        "uuid",
-			Name:      "qux",
-			Namespace: "ns",
-			Containers: []*kubecontainer.Container{
-				{Name: "foo",
-					ID: kubecontainer.ContainerID{Type: "test", ID: containerID},
-				},
-			},
-		},
-	}
-	stats, err := kubelet.GetContainerInfo("qux_ns", "uuid", "foo", cadvisorReq)
-	if stats != nil {
-		t.Errorf("non-nil stats on error")
-	}
-	if err == nil {
-		t.Errorf("expect error but received nil error")
-		return
-	}
-	if err.Error() != cadvisorApiFailure.Error() {
-		t.Errorf("wrong error message. expect %v, got %v", cadvisorApiFailure, err)
-	}
-	mockCadvisor.AssertExpectations(t)
-}
-
-func TestGetContainerInfoOnNonExistContainer(t *testing.T) {
-	testKubelet := newTestKubelet(t)
-	kubelet := testKubelet.kubelet
-	mockCadvisor := testKubelet.fakeCadvisor
-	fakeRuntime := testKubelet.fakeRuntime
-	fakeRuntime.PodList = []*kubecontainer.Pod{}
-
-	stats, _ := kubelet.GetContainerInfo("qux", "", "foo", nil)
-	if stats != nil {
-		t.Errorf("non-nil stats on non exist container")
-	}
-	mockCadvisor.AssertExpectations(t)
-}
-
-func TestGetContainerInfoWhenContainerRuntimeFailed(t *testing.T) {
-	testKubelet := newTestKubelet(t)
-	kubelet := testKubelet.kubelet
-	mockCadvisor := testKubelet.fakeCadvisor
-	fakeRuntime := testKubelet.fakeRuntime
-	expectedErr := fmt.Errorf("List containers error")
-	fakeRuntime.Err = expectedErr
-
-	stats, err := kubelet.GetContainerInfo("qux", "", "foo", nil)
-	if err == nil {
-		t.Errorf("expected error from dockertools, got none")
-	}
-	if err.Error() != expectedErr.Error() {
-		t.Errorf("expected error %v got %v", expectedErr.Error(), err.Error())
-	}
-	if stats != nil {
-		t.Errorf("non-nil stats when dockertools failed")
-	}
-	mockCadvisor.AssertExpectations(t)
-}
-
-func TestGetContainerInfoWithNoContainers(t *testing.T) {
-	testKubelet := newTestKubelet(t)
-	kubelet := testKubelet.kubelet
-	mockCadvisor := testKubelet.fakeCadvisor
-
-	stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", nil)
-	if err == nil {
-		t.Errorf("expected error from cadvisor client, got none")
-	}
-	if err != kubecontainer.ErrContainerNotFound {
-		t.Errorf("expected error %v, got %v", kubecontainer.ErrContainerNotFound.Error(), err.Error())
-	}
-	if stats != nil {
-		t.Errorf("non-nil stats when dockertools returned no containers")
-	}
-	mockCadvisor.AssertExpectations(t)
-}
-
 func TestNodeIPParam(t *testing.T) {
 	testKubelet := newTestKubelet(t)
 	kubelet := testKubelet.kubelet
@@ -828,36 +651,6 @@ func TestNodeIPParam(t *testing.T) {
 	}
 }
 
-func TestGetContainerInfoWithNoMatchingContainers(t *testing.T) {
-	testKubelet := newTestKubelet(t)
-	fakeRuntime := testKubelet.fakeRuntime
-	kubelet := testKubelet.kubelet
-	mockCadvisor := testKubelet.fakeCadvisor
-	fakeRuntime.PodList = []*kubecontainer.Pod{
-		{
-			ID:        "12345678",
-			Name:      "qux",
-			Namespace: "ns",
-			Containers: []*kubecontainer.Container{
-				{Name: "bar",
-					ID: kubecontainer.ContainerID{Type: "test", ID: "fakeID"},
-				},
-			}},
-	}
-
-	stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", nil)
-	if err == nil {
-		t.Errorf("Expected error from cadvisor client, got none")
-	}
-	if err != kubecontainer.ErrContainerNotFound {
-		t.Errorf("Expected error %v, got %v", kubecontainer.ErrContainerNotFound.Error(), err.Error())
-	}
-	if stats != nil {
-		t.Errorf("non-nil stats when dockertools returned no containers")
-	}
-	mockCadvisor.AssertExpectations(t)
-}
-
 type fakeContainerCommandRunner struct {
 	Cmd    []string
 	ID     kubecontainer.ContainerID