kubernetes history_test 源码
kubernetes history_test 代码
文件路径：/staging/src/k8s.io/kubectl/pkg/polymorphichelpers/history_test.go
/*
Copyright 2017 The Kubernetes Authors.
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 polymorphichelpers
import (
"context"
"fmt"
"reflect"
"testing"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
apiequality "k8s.io/apimachinery/pkg/api/equality"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/json"
"k8s.io/client-go/kubernetes/fake"
)
var historytests = map[schema.GroupKind]reflect.Type{
{Group: "apps", Kind: "DaemonSet"}: reflect.TypeOf(&DaemonSetHistoryViewer{}),
{Group: "apps", Kind: "StatefulSet"}: reflect.TypeOf(&StatefulSetHistoryViewer{}),
{Group: "apps", Kind: "Deployment"}: reflect.TypeOf(&DeploymentHistoryViewer{}),
}
func TestHistoryViewerFor(t *testing.T) {
fakeClientset := &fake.Clientset{}
for kind, expectedType := range historytests {
result, err := HistoryViewerFor(kind, fakeClientset)
if err != nil {
t.Fatalf("error getting HistoryViewer for a %v: %v", kind.String(), err)
}
if reflect.TypeOf(result) != expectedType {
t.Fatalf("unexpected output type (%v was expected but got %v)", expectedType, reflect.TypeOf(result))
}
}
}
func TestViewDeploymentHistory(t *testing.T) {
trueVar := true
replicas := int32(1)
deployment := &appsv1.Deployment{
ObjectMeta: metav1.ObjectMeta{
Name: "moons",
Namespace: "default",
UID: "fc7e66ad-eacc-4413-8277-e22276eacce6",
Labels: map[string]string{"foo": "bar"},
},
Spec: appsv1.DeploymentSpec{
Selector: &metav1.LabelSelector{
MatchLabels: map[string]string{"foo": "bar"},
},
Replicas: &replicas,
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{"foo": "bar"}},
Spec: corev1.PodSpec{
Containers: []corev1.Container{{
Name: "test",
Image: fmt.Sprintf("foo:1"),
}}},
},
},
}
fakeClientSet := fake.NewSimpleClientset(deployment)
replicaSets := map[int64]*appsv1.ReplicaSet{}
var i int64
for i = 1; i < 5; i++ {
rs := &appsv1.ReplicaSet{
ObjectMeta: metav1.ObjectMeta{
Name: fmt.Sprintf("moons-%d", i),
Namespace: "default",
UID: types.UID(fmt.Sprintf("00000000-0000-0000-0000-00000000000%d", i)),
Labels: map[string]string{"foo": "bar"},
OwnerReferences: []metav1.OwnerReference{{"apps/v1", "Deployment", deployment.Name, deployment.UID, &trueVar, nil}},
Annotations: map[string]string{
"deployment.kubernetes.io/revision": fmt.Sprintf("%d", i),
},
},
Spec: appsv1.ReplicaSetSpec{
Selector: &metav1.LabelSelector{
MatchLabels: map[string]string{"foo": "bar"},
},
Replicas: &replicas,
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{"foo": "bar"}},
Spec: corev1.PodSpec{
Containers: []corev1.Container{{
Name: "test",
Image: fmt.Sprintf("foo:%d", i),
}}},
},
},
}
if i == 3 {
rs.ObjectMeta.Annotations[ChangeCauseAnnotation] = "foo change cause"
} else if i == 4 {
rs.ObjectMeta.Annotations[ChangeCauseAnnotation] = "bar change cause"
}
fakeClientSet.AppsV1().ReplicaSets("default").Create(context.TODO(), rs, metav1.CreateOptions{})
replicaSets[i] = rs
}
viewer := DeploymentHistoryViewer{fakeClientSet}
t.Run("should show revisions list if the revision is not specified", func(t *testing.T) {
result, err := viewer.ViewHistory("default", "moons", 0)
if err != nil {
t.Fatalf("error getting history for Deployment moons: %v", err)
}
expected := `REVISION CHANGE-CAUSE
1 <none>
2 <none>
3 foo change cause
4 bar change cause
`
if result != expected {
t.Fatalf("unexpected output (%v was expected but got %v)", expected, result)
}
})
t.Run("should describe a single revision", func(t *testing.T) {
result, err := viewer.ViewHistory("default", "moons", 3)
if err != nil {
t.Fatalf("error getting history for Deployment moons: %v", err)
}
expected := `Pod Template:
Labels: foo=bar
Annotations: kubernetes.io/change-cause: foo change cause
Containers:
test:
Image: foo:3
Port: <none>
Host Port: <none>
Environment: <none>
Mounts: <none>
Volumes: <none>
`
if result != expected {
t.Fatalf("unexpected output (%v was expected but got %v)", expected, result)
}
})
t.Run("should get history", func(t *testing.T) {
result, err := viewer.GetHistory("default", "moons")
if err != nil {
t.Fatalf("error getting history for Deployment moons: %v", err)
}
if len(result) != 4 {
t.Fatalf("unexpected history length (expected 4, got %d", len(result))
}
for i = 1; i < 4; i++ {
actual, found := result[i]
if !found {
t.Fatalf("revision %d not found in history", i)
}
expected := replicaSets[i]
if !reflect.DeepEqual(expected, actual) {
t.Errorf("history does not match. expected %+v, got %+v", expected, actual)
}
}
})
}
func TestViewHistory(t *testing.T) {
t.Run("for statefulSet", func(t *testing.T) {
var (
trueVar = true
replicas = int32(1)
podStub = corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{"foo": "bar"}},
Spec: corev1.PodSpec{Containers: []corev1.Container{{Name: "test", Image: "nginx"}}},
}
ssStub = &appsv1.StatefulSet{
ObjectMeta: metav1.ObjectMeta{
Name: "moons",
Namespace: "default",
UID: "1993",
Labels: map[string]string{"foo": "bar"},
},
Spec: appsv1.StatefulSetSpec{Selector: &metav1.LabelSelector{MatchLabels: podStub.ObjectMeta.Labels}, Replicas: &replicas, Template: podStub},
}
)
stsRawData, err := json.Marshal(ssStub)
if err != nil {
t.Fatalf("error creating sts raw data: %v", err)
}
ssStub1 := &appsv1.ControllerRevision{
ObjectMeta: metav1.ObjectMeta{
Name: "moons",
Namespace: "default",
Labels: map[string]string{"foo": "bar"},
OwnerReferences: []metav1.OwnerReference{{"apps/v1", "StatefulSet", "moons", "1993", &trueVar, nil}},
},
Data: runtime.RawExtension{Raw: stsRawData},
TypeMeta: metav1.TypeMeta{Kind: "StatefulSet", APIVersion: "apps/v1"},
Revision: 1,
}
fakeClientSet := fake.NewSimpleClientset(ssStub)
_, err = fakeClientSet.AppsV1().ControllerRevisions("default").Create(context.TODO(), ssStub1, metav1.CreateOptions{})
if err != nil {
t.Fatalf("create controllerRevisions error %v occurred ", err)
}
var sts = &StatefulSetHistoryViewer{
fakeClientSet,
}
t.Run("should show revisions list if the revision is not specified", func(t *testing.T) {
result, err := sts.ViewHistory("default", "moons", 0)
if err != nil {
t.Fatalf("error getting ViewHistory for a StatefulSets moons: %v", err)
}
expected := `REVISION CHANGE-CAUSE
1 <none>
`
if result != expected {
t.Fatalf("unexpected output (%v was expected but got %v)", expected, result)
}
})
t.Run("should describe the revision if revision is specified", func(t *testing.T) {
result, err := sts.ViewHistory("default", "moons", 1)
if err != nil {
t.Fatalf("error getting ViewHistory for a StatefulSets moons: %v", err)
}
expected := `Pod Template:
Labels: foo=bar
Containers:
test:
Image: nginx
Port: <none>
Host Port: <none>
Environment: <none>
Mounts: <none>
Volumes: <none>
`
if result != expected {
t.Fatalf("unexpected output (%v was expected but got %v)", expected, result)
}
})
t.Run("should get history", func(t *testing.T) {
result, err := sts.GetHistory("default", "moons")
if err != nil {
t.Fatalf("error getting history for StatefulSet moons: %v", err)
}
if len(result) != 1 {
t.Fatalf("unexpected history length (expected 1, got %d", len(result))
}
actual, found := result[1]
if !found {
t.Fatalf("revision 1 not found in history")
}
expected := ssStub
if !reflect.DeepEqual(expected, actual) {
t.Errorf("history does not match. expected %+v, got %+v", expected, actual)
}
})
})
t.Run("for daemonSet", func(t *testing.T) {
var (
trueVar = true
podStub = corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{"foo": "bar"}},
Spec: corev1.PodSpec{Containers: []corev1.Container{{Name: "test", Image: "nginx"}}},
}
daemonSetStub = &appsv1.DaemonSet{
ObjectMeta: metav1.ObjectMeta{
Name: "moons",
Namespace: "default",
UID: "1993",
Labels: map[string]string{"foo": "bar"},
},
Spec: appsv1.DaemonSetSpec{Selector: &metav1.LabelSelector{MatchLabels: podStub.ObjectMeta.Labels}, Template: podStub},
}
)
daemonSetRaw, err := json.Marshal(daemonSetStub)
if err != nil {
t.Fatalf("error creating sts raw data: %v", err)
}
daemonSetControllerRevision := &appsv1.ControllerRevision{
ObjectMeta: metav1.ObjectMeta{
Name: "moons",
Namespace: "default",
Labels: map[string]string{"foo": "bar"},
OwnerReferences: []metav1.OwnerReference{{"apps/v1", "DaemonSet", "moons", "1993", &trueVar, nil}},
},
Data: runtime.RawExtension{Raw: daemonSetRaw},
TypeMeta: metav1.TypeMeta{Kind: "StatefulSet", APIVersion: "apps/v1"},
Revision: 1,
}
fakeClientSet := fake.NewSimpleClientset(daemonSetStub)
_, err = fakeClientSet.AppsV1().ControllerRevisions("default").Create(context.TODO(), daemonSetControllerRevision, metav1.CreateOptions{})
if err != nil {
t.Fatalf("create controllerRevisions error %v occurred ", err)
}
var daemonSetHistoryViewer = &DaemonSetHistoryViewer{
fakeClientSet,
}
t.Run("should show revisions list if the revision is not specified", func(t *testing.T) {
result, err := daemonSetHistoryViewer.ViewHistory("default", "moons", 0)
if err != nil {
t.Fatalf("error getting ViewHistory for DaemonSet moons: %v", err)
}
expected := `REVISION CHANGE-CAUSE
1 <none>
`
if result != expected {
t.Fatalf("unexpected output (%v was expected but got %v)", expected, result)
}
})
t.Run("should describe the revision if revision is specified", func(t *testing.T) {
result, err := daemonSetHistoryViewer.ViewHistory("default", "moons", 1)
if err != nil {
t.Fatalf("error getting ViewHistory for DaemonSet moons: %v", err)
}
expected := `Pod Template:
Labels: foo=bar
Containers:
test:
Image: nginx
Port: <none>
Host Port: <none>
Environment: <none>
Mounts: <none>
Volumes: <none>
`
if result != expected {
t.Fatalf("unexpected output (%v was expected but got %v)", expected, result)
}
})
t.Run("should get history", func(t *testing.T) {
result, err := daemonSetHistoryViewer.GetHistory("default", "moons")
if err != nil {
t.Fatalf("error getting history for DaemonSet moons: %v", err)
}
if len(result) != 1 {
t.Fatalf("unexpected history length (expected 1, got %d", len(result))
}
actual, found := result[1]
if !found {
t.Fatalf("revision 1 not found in history")
}
expected := daemonSetStub
if !reflect.DeepEqual(expected, actual) {
t.Errorf("history does not match. expected %+v, got %+v", expected, actual)
}
})
})
}
func TestApplyDaemonSetHistory(t *testing.T) {
tests := []struct {
name string
source *appsv1.DaemonSet
expected *appsv1.DaemonSet
}{
{
"test_less",
&appsv1.DaemonSet{
Spec: appsv1.DaemonSetSpec{
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{"version": "v3"},
},
Spec: corev1.PodSpec{
InitContainers: []corev1.Container{{Name: "i0"}},
Containers: []corev1.Container{{Name: "c0"}},
Volumes: []corev1.Volume{{Name: "v0"}},
NodeSelector: map[string]string{"1dsa": "n0"},
ImagePullSecrets: []corev1.LocalObjectReference{{Name: "ips0"}},
Tolerations: []corev1.Toleration{{Key: "t0"}},
HostAliases: []corev1.HostAlias{{IP: "h0"}},
ReadinessGates: []corev1.PodReadinessGate{{ConditionType: corev1.PodScheduled}},
},
},
},
},
&appsv1.DaemonSet{
Spec: appsv1.DaemonSetSpec{
Template: corev1.PodTemplateSpec{
Spec: corev1.PodSpec{
Containers: []corev1.Container{{Name: "c1"}},
// keep diversity field, eg: nil or empty slice
InitContainers: []corev1.Container{},
},
},
},
},
},
{
"test_more",
&appsv1.DaemonSet{
Spec: appsv1.DaemonSetSpec{
Template: corev1.PodTemplateSpec{
Spec: corev1.PodSpec{
InitContainers: []corev1.Container{{Name: "i0"}},
},
},
},
},
&appsv1.DaemonSet{
Spec: appsv1.DaemonSetSpec{
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{"version": "v3"},
},
Spec: corev1.PodSpec{
InitContainers: []corev1.Container{{Name: "i1"}},
Containers: []corev1.Container{{Name: "c1"}},
Volumes: []corev1.Volume{{Name: "v1"}},
},
},
},
},
},
{
"test_equal",
&appsv1.DaemonSet{
Spec: appsv1.DaemonSetSpec{
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{"version": "v0"},
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{{Name: "c1"}},
InitContainers: []corev1.Container{{Name: "i0"}},
Volumes: []corev1.Volume{{Name: "v0"}},
},
},
},
},
&appsv1.DaemonSet{
Spec: appsv1.DaemonSetSpec{
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{"version": "v1"},
},
Spec: corev1.PodSpec{
InitContainers: []corev1.Container{{Name: "i1"}},
Containers: []corev1.Container{{Name: "c1"}},
Volumes: []corev1.Volume{{Name: "v1"}},
},
},
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
patch, err := getDaemonSetPatch(tt.expected)
if err != nil {
t.Errorf("getDaemonSetPatch failed : %v", err)
}
cr := &appsv1.ControllerRevision{
Data: runtime.RawExtension{
Raw: patch,
},
}
tt.source, err = applyDaemonSetHistory(tt.source, cr)
if err != nil {
t.Errorf("applyDaemonSetHistory failed : %v", err)
}
if !apiequality.Semantic.DeepEqual(tt.source, tt.expected) {
t.Errorf("expected out [%v] but get [%v]", tt.expected, tt.source)
}
})
}
}
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