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Add unit tests for ASW.AddPodToVolume
This commit is contained in:
Jan Safranek
parent
17d850ee0e
commit
0793ecee3a
@ -1073,7 +1073,8 @@ func (asw *actualStateOfWorld) newAttachedVolume(
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DeviceMountPath: attachedVolume.deviceMountPath,
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PluginName: attachedVolume.pluginName,
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SELinuxMountContext: seLinuxMountContext},
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DeviceMountState: attachedVolume.deviceMountState,
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DeviceMountState: attachedVolume.deviceMountState,
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SELinuxMountContext: seLinuxMountContext,
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}
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}
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@ -18,13 +18,17 @@ package cache
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import (
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"fmt"
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"testing"
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"k8s.io/apimachinery/pkg/api/resource"
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"k8s.io/apimachinery/pkg/types"
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"testing"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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featuregatetesting "k8s.io/component-base/featuregate/testing"
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"github.com/stretchr/testify/require"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/volume"
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volumetesting "k8s.io/kubernetes/pkg/volume/testing"
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"k8s.io/kubernetes/pkg/volume/util"
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@ -749,6 +753,137 @@ func Test_MarkDeviceAsMounted_Positive_NewVolume(t *testing.T) {
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verifyVolumeExistsInGloballyMountedVolumes(t, generatedVolumeName, asw)
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}
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// Populates data struct with a volume with a SELinux context.
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// Calls AddPodToVolume() to add a pod to the volume
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// Verifies volume/pod combo exist using PodExistsInVolume()
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func Test_AddPodToVolume_Positive_SELinux(t *testing.T) {
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// Arrange
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.ReadWriteOncePod, true)()
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.SELinuxMountReadWriteOncePod, true)()
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volumePluginMgr, plugin := volumetesting.GetTestKubeletVolumePluginMgr(t)
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asw := NewActualStateOfWorld("mynode" /* nodeName */, volumePluginMgr)
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devicePath := "fake/device/path"
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "pod1",
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UID: "pod1uid",
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},
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Spec: v1.PodSpec{
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Volumes: []v1.Volume{
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{
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Name: "volume-name",
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VolumeSource: v1.VolumeSource{
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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: "fake-device1",
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},
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},
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},
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},
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},
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}
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volumeSpec := &volume.Spec{Volume: &pod.Spec.Volumes[0]}
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generatedVolumeName, err := util.GetUniqueVolumeNameFromSpec(plugin, volumeSpec)
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if err != nil {
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t.Fatalf("GetUniqueVolumeNameFromSpec failed. Expected: <no error> Actual: <%v>", err)
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}
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err = asw.MarkVolumeAsAttached(emptyVolumeName, volumeSpec, "" /* nodeName */, devicePath)
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if err != nil {
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t.Fatalf("MarkVolumeAsAttached failed. Expected: <no error> Actual: <%v>", err)
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}
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podName := util.GetUniquePodName(pod)
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mounter, err := plugin.NewMounter(volumeSpec, pod, volume.VolumeOptions{})
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if err != nil {
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t.Fatalf("NewMounter failed. Expected: <no error> Actual: <%v>", err)
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}
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mapper, err := plugin.NewBlockVolumeMapper(volumeSpec, pod, volume.VolumeOptions{})
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if err != nil {
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t.Fatalf("NewBlockVolumeMapper failed. Expected: <no error> Actual: <%v>", err)
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}
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// Act
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markVolumeOpts := operationexecutor.MarkVolumeOpts{
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PodName: podName,
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PodUID: pod.UID,
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VolumeName: generatedVolumeName,
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Mounter: mounter,
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BlockVolumeMapper: mapper,
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OuterVolumeSpecName: volumeSpec.Name(),
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VolumeSpec: volumeSpec,
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SELinuxMountContext: "system_u:object_r:container_file_t:s0:c0,c1",
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VolumeMountState: operationexecutor.VolumeMounted,
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}
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err = asw.AddPodToVolume(markVolumeOpts)
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// Assert
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if err != nil {
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t.Fatalf("AddPodToVolume failed. Expected: <no error> Actual: <%v>", err)
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}
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verifyVolumeExistsAswWithSELinux(t, generatedVolumeName, "system_u:object_r:container_file_t:s0:c0,c1", asw)
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verifyVolumeDoesntExistInUnmountedVolumes(t, generatedVolumeName, asw)
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verifyVolumeDoesntExistInGloballyMountedVolumes(t, generatedVolumeName, asw)
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verifyPodExistsInVolumeAsw(t, podName, generatedVolumeName, "fake/device/path" /* expectedDevicePath */, asw)
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verifyVolumeExistsWithSpecNameInVolumeAsw(t, podName, volumeSpec.Name(), asw)
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verifyVolumeMountedElsewhere(t, podName, generatedVolumeName, false /*expectedMountedElsewhere */, asw)
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}
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// Calls MarkVolumeAsAttached() once to add volume
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// Calls MarkDeviceAsMounted() with SELinux to mark volume as globally mounted.
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// Verifies newly added volume exists in GetUnmountedVolumes()
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// Verifies newly added volume exists in GetGloballyMountedVolumes()
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func Test_MarkDeviceAsMounted_Positive_SELinux(t *testing.T) {
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// Arrange
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.ReadWriteOncePod, true)()
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.SELinuxMountReadWriteOncePod, true)()
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volumePluginMgr, plugin := volumetesting.GetTestKubeletVolumePluginMgr(t)
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asw := NewActualStateOfWorld("mynode" /* nodeName */, volumePluginMgr)
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "pod1",
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UID: "pod1uid",
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},
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Spec: v1.PodSpec{
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Volumes: []v1.Volume{
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{
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Name: "volume-name",
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VolumeSource: v1.VolumeSource{
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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: "fake-device1",
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},
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},
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},
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},
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},
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}
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volumeSpec := &volume.Spec{Volume: &pod.Spec.Volumes[0]}
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devicePath := "fake/device/path"
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deviceMountPath := "fake/device/mount/path"
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generatedVolumeName, err := util.GetUniqueVolumeNameFromSpec(plugin, volumeSpec)
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if err != nil {
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t.Fatalf("GetUniqueVolumeNameFromSpec failed. Expected: <no error> Actual: <%v>", err)
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}
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err = asw.MarkVolumeAsAttached(emptyVolumeName, volumeSpec, "" /* nodeName */, devicePath)
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if err != nil {
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t.Fatalf("MarkVolumeAsAttached failed. Expected: <no error> Actual: <%v>", err)
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}
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// Act
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err = asw.MarkDeviceAsMounted(generatedVolumeName, devicePath, deviceMountPath, "system_u:system_r:container_t:s0:c0,c1")
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// Assert
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if err != nil {
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t.Fatalf("MarkDeviceAsMounted failed. Expected: <no error> Actual: <%v>", err)
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}
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verifyVolumeExistsAsw(t, generatedVolumeName, true /* shouldExist */, asw)
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verifyVolumeExistsInUnmountedVolumes(t, generatedVolumeName, asw)
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verifyVolumeExistsInGloballyMountedVolumesWithSELinux(t, generatedVolumeName, "system_u:system_r:container_t:s0:c0,c1", asw)
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}
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func TestUncertainVolumeMounts(t *testing.T) {
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// Arrange
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volumePluginMgr, plugin := volumetesting.GetTestKubeletVolumePluginMgr(t)
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@ -849,6 +984,28 @@ func verifyVolumeExistsInGloballyMountedVolumes(
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globallyMountedVolumes)
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}
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func verifyVolumeExistsInGloballyMountedVolumesWithSELinux(
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t *testing.T, expectedVolumeName v1.UniqueVolumeName, expectedSELinuxContext string, asw ActualStateOfWorld) {
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globallyMountedVolumes := asw.GetGloballyMountedVolumes()
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for _, volume := range globallyMountedVolumes {
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if volume.VolumeName == expectedVolumeName {
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if volume.SELinuxMountContext == expectedSELinuxContext {
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return
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}
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t.Errorf(
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"Volume %q has wrong SELinux context. Expected %q, got %q",
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expectedVolumeName,
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expectedSELinuxContext,
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volume.SELinuxMountContext)
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}
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}
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t.Fatalf(
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"Could not find volume %v in the list of GloballyMountedVolumes for actual state of world %+v",
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expectedVolumeName,
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globallyMountedVolumes)
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}
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func verifyVolumeDoesntExistInGloballyMountedVolumes(
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t *testing.T, volumeToCheck v1.UniqueVolumeName, asw ActualStateOfWorld) {
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globallyMountedVolumes := asw.GetGloballyMountedVolumes()
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@ -876,6 +1033,27 @@ func verifyVolumeExistsAsw(
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}
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}
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func verifyVolumeExistsAswWithSELinux(
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t *testing.T,
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expectedVolumeName v1.UniqueVolumeName,
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expectedSELinuxContext string,
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asw ActualStateOfWorld) {
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volumes := asw.GetMountedVolumes()
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for _, vol := range volumes {
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if vol.VolumeName == expectedVolumeName {
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if vol.SELinuxMountContext == expectedSELinuxContext {
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return
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}
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t.Errorf(
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"Volume %q has wrong SELinux context, expected %q, got %q",
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expectedVolumeName,
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expectedSELinuxContext,
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vol.SELinuxMountContext)
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}
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}
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t.Errorf("Volume %q not found in ASW", expectedVolumeName)
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}
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func verifyVolumeExistsInUnmountedVolumes(
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t *testing.T, expectedVolumeName v1.UniqueVolumeName, asw ActualStateOfWorld) {
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unmountedVolumes := asw.GetUnmountedVolumes()
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