mirror of
https://github.com/k3s-io/kubernetes.git
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Add integration tests for ephemeral containers
This commit is contained in:
Lee Verberne
parent
7e6b70fbb5
commit
3995ca5a82
@ -18,13 +18,19 @@ package pods
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import (
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"fmt"
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"strings"
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"testing"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/types"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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clientset "k8s.io/client-go/kubernetes"
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typedv1 "k8s.io/client-go/kubernetes/typed/core/v1"
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restclient "k8s.io/client-go/rest"
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featuregatetesting "k8s.io/component-base/featuregate/testing"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/test/integration"
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"k8s.io/kubernetes/test/integration/framework"
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)
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@ -179,3 +185,479 @@ func TestPodReadOnlyFilesystem(t *testing.T) {
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integration.DeletePodOrErrorf(t, client, ns.Name, pod.Name)
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}
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func TestPodCreateEphemeralContainers(t *testing.T) {
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.EphemeralContainers, true)()
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_, s, closeFn := framework.RunAMaster(nil)
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defer closeFn()
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ns := framework.CreateTestingNamespace("pod-create-ephemeral-containers", s, t)
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defer framework.DeleteTestingNamespace(ns, s, t)
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client := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Group: "", Version: "v1"}}})
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "xxx",
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "fake-name",
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Image: "fakeimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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EphemeralContainers: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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},
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}
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if _, err := client.CoreV1().Pods(ns.Name).Create(pod); err == nil {
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t.Errorf("Unexpected allowed creation of pod with ephemeral containers")
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integration.DeletePodOrErrorf(t, client, ns.Name, pod.Name)
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} else if !strings.HasSuffix(err.Error(), "spec.ephemeralContainers: Forbidden: cannot be set on create") {
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t.Errorf("Unexpected error when creating pod with ephemeral containers: %v", err)
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}
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}
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// setUpEphemeralContainers creates a pod that has Ephemeral Containers. This is a two step
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// process because Ephemeral Containers are not allowed during pod creation.
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func setUpEphemeralContainers(podsClient typedv1.PodInterface, pod *v1.Pod, containers []v1.EphemeralContainer) error {
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if _, err := podsClient.Create(pod); err != nil {
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return fmt.Errorf("failed to create pod: %v", err)
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}
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if len(containers) == 0 {
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return nil
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}
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pod.Spec.EphemeralContainers = containers
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if _, err := podsClient.Update(pod); err == nil {
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return fmt.Errorf("unexpected allowed direct update of ephemeral containers during set up: %v", err)
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}
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ec, err := podsClient.GetEphemeralContainers(pod.Name, metav1.GetOptions{})
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if err != nil {
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return fmt.Errorf("unable to get ephemeral containers for test case set up: %v", err)
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}
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ec.EphemeralContainers = containers
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if _, err = podsClient.UpdateEphemeralContainers(pod.Name, ec); err != nil {
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return fmt.Errorf("failed to update ephemeral containers for test case set up: %v", err)
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}
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return nil
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}
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func TestPodPatchEphemeralContainers(t *testing.T) {
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.EphemeralContainers, true)()
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_, s, closeFn := framework.RunAMaster(nil)
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defer closeFn()
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ns := framework.CreateTestingNamespace("pod-patch-ephemeral-containers", s, t)
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defer framework.DeleteTestingNamespace(ns, s, t)
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client := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Group: "", Version: "v1"}}})
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testPod := func(name string) *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "fake-name",
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Image: "fakeimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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}
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}
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cases := []struct {
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name string
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original []v1.EphemeralContainer
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patchType types.PatchType
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patchBody []byte
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valid bool
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}{
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{
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name: "create single container (strategic)",
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original: nil,
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patchType: types.StrategicMergePatchType,
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patchBody: []byte(`{
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"ephemeralContainers": [{
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"name": "debugger1",
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"image": "debugimage",
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"imagePullPolicy": "Always",
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"terminationMessagePolicy": "File"
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}]
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}`),
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valid: true,
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},
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{
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name: "create single container (merge)",
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original: nil,
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patchType: types.MergePatchType,
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patchBody: []byte(`{
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"ephemeralContainers":[{
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"name": "debugger1",
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"image": "debugimage",
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"imagePullPolicy": "Always",
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"terminationMessagePolicy": "File"
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}]
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}`),
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valid: true,
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},
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{
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name: "create single container (JSON)",
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original: nil,
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patchType: types.JSONPatchType,
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patchBody: []byte(`[{
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"op":"add",
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"path":"/ephemeralContainers/-",
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"value":{
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"name":"debugger1",
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"image":"debugimage",
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"imagePullPolicy": "Always",
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"terminationMessagePolicy": "File"
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}
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}]`),
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valid: true,
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},
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{
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name: "add single container (strategic)",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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patchType: types.StrategicMergePatchType,
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patchBody: []byte(`{
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"ephemeralContainers":[{
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"name": "debugger2",
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"image": "debugimage",
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"imagePullPolicy": "Always",
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"terminationMessagePolicy": "File"
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}]
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}`),
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valid: true,
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},
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{
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name: "add single container (merge)",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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patchType: types.MergePatchType,
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patchBody: []byte(`{
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"ephemeralContainers":[{
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"name": "debugger1",
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"image": "debugimage",
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"imagePullPolicy": "Always",
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"terminationMessagePolicy": "File"
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},{
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"name": "debugger2",
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"image": "debugimage",
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"imagePullPolicy": "Always",
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"terminationMessagePolicy": "File"
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}]
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}`),
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valid: true,
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},
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{
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name: "add single container (JSON)",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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patchType: types.JSONPatchType,
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patchBody: []byte(`[{
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"op":"add",
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"path":"/ephemeralContainers/-",
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"value":{
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"name":"debugger2",
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"image":"debugimage",
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"imagePullPolicy": "Always",
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"terminationMessagePolicy": "File"
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}
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}]`),
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valid: true,
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},
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{
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name: "remove all containers (merge)",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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patchType: types.MergePatchType,
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patchBody: []byte(`{"ephemeralContainers":[]}`),
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valid: false,
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},
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{
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name: "remove all containers (JSON)",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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patchType: types.JSONPatchType,
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patchBody: []byte(`[{"op":"remove","path":"/ephemeralContainers/0"}]`),
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valid: false,
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},
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}
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for i, tc := range cases {
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pod := testPod(fmt.Sprintf("ephemeral-container-test-%v", i))
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if err := setUpEphemeralContainers(client.CoreV1().Pods(ns.Name), pod, tc.original); err != nil {
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t.Errorf("%v: %v", tc.name, err)
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}
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if _, err := client.CoreV1().Pods(ns.Name).Patch(pod.Name, tc.patchType, tc.patchBody, "ephemeralcontainers"); tc.valid && err != nil {
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t.Errorf("%v: failed to update ephemeral containers: %v", tc.name, err)
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} else if !tc.valid && err == nil {
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t.Errorf("%v: unexpected allowed update to ephemeral containers", tc.name)
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}
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integration.DeletePodOrErrorf(t, client, ns.Name, pod.Name)
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}
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}
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func TestPodUpdateEphemeralContainers(t *testing.T) {
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.EphemeralContainers, true)()
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_, s, closeFn := framework.RunAMaster(nil)
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defer closeFn()
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ns := framework.CreateTestingNamespace("pod-update-ephemeral-containers", s, t)
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defer framework.DeleteTestingNamespace(ns, s, t)
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client := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Group: "", Version: "v1"}}})
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testPod := func(name string) *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "fake-name",
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Image: "fakeimage",
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},
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},
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},
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}
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}
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cases := []struct {
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name string
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original []v1.EphemeralContainer
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update []v1.EphemeralContainer
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valid bool
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}{
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{
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name: "no change, nil",
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original: nil,
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update: nil,
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valid: true,
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},
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{
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name: "no change, set",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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update: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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valid: true,
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},
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{
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name: "add single container",
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original: nil,
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update: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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valid: true,
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},
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{
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name: "remove all containers, nil",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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update: nil,
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valid: false,
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},
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{
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name: "remove all containers, empty",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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update: []v1.EphemeralContainer{},
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valid: false,
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},
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{
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name: "increase number of containers",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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update: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger2",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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valid: true,
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},
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{
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name: "decrease number of containers",
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original: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
|
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
|
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TerminationMessagePolicy: "File",
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},
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},
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
|
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Name: "debugger2",
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Image: "debugimage",
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ImagePullPolicy: "Always",
|
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TerminationMessagePolicy: "File",
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},
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},
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},
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update: []v1.EphemeralContainer{
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{
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EphemeralContainerCommon: v1.EphemeralContainerCommon{
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Name: "debugger1",
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Image: "debugimage",
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ImagePullPolicy: "Always",
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TerminationMessagePolicy: "File",
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},
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},
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},
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valid: false,
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},
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}
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for i, tc := range cases {
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pod := testPod(fmt.Sprintf("ephemeral-container-test-%v", i))
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if err := setUpEphemeralContainers(client.CoreV1().Pods(ns.Name), pod, tc.original); err != nil {
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t.Errorf("%v: %v", tc.name, err)
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}
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ec, err := client.CoreV1().Pods(ns.Name).GetEphemeralContainers(pod.Name, metav1.GetOptions{})
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if err != nil {
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t.Errorf("%v: unable to get ephemeral containers: %v", tc.name, err)
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}
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ec.EphemeralContainers = tc.update
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if _, err := client.CoreV1().Pods(ns.Name).UpdateEphemeralContainers(pod.Name, ec); tc.valid && err != nil {
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t.Errorf("%v: failed to update ephemeral containers: %v", tc.name, err)
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} else if !tc.valid && err == nil {
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t.Errorf("%v: unexpected allowed update to ephemeral containers", tc.name)
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}
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integration.DeletePodOrErrorf(t, client, ns.Name, pod.Name)
|
||||
}
|
||||
}
|
||||
|
||||
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Reference in New Issue
Block a user