mirror of https://github.com/k3s-io/k3s
359 lines
11 KiB
Go
359 lines
11 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package etcd
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import (
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"testing"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/api/rest"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/apis/extensions"
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"k8s.io/kubernetes/pkg/fields"
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"k8s.io/kubernetes/pkg/labels"
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"k8s.io/kubernetes/pkg/registry/generic"
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"k8s.io/kubernetes/pkg/registry/registrytest"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/storage/etcd/etcdtest"
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etcdtesting "k8s.io/kubernetes/pkg/storage/etcd/testing"
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"k8s.io/kubernetes/pkg/util/diff"
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)
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const defaultReplicas = 100
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func newStorage(t *testing.T) (*ReplicaSetStorage, *etcdtesting.EtcdTestServer) {
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etcdStorage, server := registrytest.NewEtcdStorage(t, "extensions")
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restOptions := generic.RESTOptions{StorageConfig: etcdStorage, Decorator: generic.UndecoratedStorage, DeleteCollectionWorkers: 1, ResourcePrefix: "replicasets"}
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replicaSetStorage := NewStorage(restOptions)
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return &replicaSetStorage, server
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}
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// createReplicaSet is a helper function that returns a ReplicaSet with the updated resource version.
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func createReplicaSet(storage *REST, rs extensions.ReplicaSet, t *testing.T) (extensions.ReplicaSet, error) {
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ctx := api.WithNamespace(api.NewContext(), rs.Namespace)
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obj, err := storage.Create(ctx, &rs)
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if err != nil {
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t.Errorf("Failed to create ReplicaSet, %v", err)
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}
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newRS := obj.(*extensions.ReplicaSet)
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return *newRS, nil
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}
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func validNewReplicaSet() *extensions.ReplicaSet {
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return &extensions.ReplicaSet{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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Namespace: api.NamespaceDefault,
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},
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Spec: extensions.ReplicaSetSpec{
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Selector: &unversioned.LabelSelector{MatchLabels: map[string]string{"a": "b"}},
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Template: api.PodTemplateSpec{
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ObjectMeta: api.ObjectMeta{
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Labels: map[string]string{"a": "b"},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "test",
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Image: "test_image",
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ImagePullPolicy: api.PullIfNotPresent,
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},
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},
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RestartPolicy: api.RestartPolicyAlways,
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DNSPolicy: api.DNSClusterFirst,
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},
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},
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Replicas: 7,
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},
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Status: extensions.ReplicaSetStatus{
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Replicas: 5,
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},
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}
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}
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var validReplicaSet = *validNewReplicaSet()
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func TestCreate(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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test := registrytest.New(t, storage.ReplicaSet.Store)
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rs := validNewReplicaSet()
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rs.ObjectMeta = api.ObjectMeta{}
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test.TestCreate(
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// valid
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rs,
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// invalid (invalid selector)
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&extensions.ReplicaSet{
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Spec: extensions.ReplicaSetSpec{
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Replicas: 2,
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Selector: &unversioned.LabelSelector{MatchLabels: map[string]string{}},
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Template: validReplicaSet.Spec.Template,
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},
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},
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)
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}
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func TestUpdate(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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test := registrytest.New(t, storage.ReplicaSet.Store)
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test.TestUpdate(
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// valid
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validNewReplicaSet(),
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// valid updateFunc
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func(obj runtime.Object) runtime.Object {
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object := obj.(*extensions.ReplicaSet)
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object.Spec.Replicas = object.Spec.Replicas + 1
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return object
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},
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// invalid updateFunc
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func(obj runtime.Object) runtime.Object {
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object := obj.(*extensions.ReplicaSet)
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object.Name = ""
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return object
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},
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func(obj runtime.Object) runtime.Object {
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object := obj.(*extensions.ReplicaSet)
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object.Spec.Selector = &unversioned.LabelSelector{MatchLabels: map[string]string{}}
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return object
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},
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)
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}
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func TestDelete(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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test := registrytest.New(t, storage.ReplicaSet.Store)
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test.TestDelete(validNewReplicaSet())
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}
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func TestGenerationNumber(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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modifiedSno := *validNewReplicaSet()
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modifiedSno.Generation = 100
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modifiedSno.Status.ObservedGeneration = 10
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ctx := api.NewDefaultContext()
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rs, err := createReplicaSet(storage.ReplicaSet, modifiedSno, t)
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etcdRS, err := storage.ReplicaSet.Get(ctx, rs.Name)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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storedRS, _ := etcdRS.(*extensions.ReplicaSet)
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// Generation initialization
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if storedRS.Generation != 1 && storedRS.Status.ObservedGeneration != 0 {
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t.Fatalf("Unexpected generation number %v, status generation %v", storedRS.Generation, storedRS.Status.ObservedGeneration)
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}
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// Updates to spec should increment the generation number
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storedRS.Spec.Replicas += 1
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storage.ReplicaSet.Update(ctx, storedRS.Name, rest.DefaultUpdatedObjectInfo(storedRS, api.Scheme))
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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etcdRS, err = storage.ReplicaSet.Get(ctx, rs.Name)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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storedRS, _ = etcdRS.(*extensions.ReplicaSet)
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if storedRS.Generation != 2 || storedRS.Status.ObservedGeneration != 0 {
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t.Fatalf("Unexpected generation, spec: %v, status: %v", storedRS.Generation, storedRS.Status.ObservedGeneration)
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}
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// Updates to status should not increment either spec or status generation numbers
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storedRS.Status.Replicas += 1
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storage.ReplicaSet.Update(ctx, storedRS.Name, rest.DefaultUpdatedObjectInfo(storedRS, api.Scheme))
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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etcdRS, err = storage.ReplicaSet.Get(ctx, rs.Name)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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storedRS, _ = etcdRS.(*extensions.ReplicaSet)
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if storedRS.Generation != 2 || storedRS.Status.ObservedGeneration != 0 {
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t.Fatalf("Unexpected generation number, spec: %v, status: %v", storedRS.Generation, storedRS.Status.ObservedGeneration)
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}
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}
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func TestGet(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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test := registrytest.New(t, storage.ReplicaSet.Store)
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test.TestGet(validNewReplicaSet())
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}
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func TestList(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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test := registrytest.New(t, storage.ReplicaSet.Store)
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test.TestList(validNewReplicaSet())
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}
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func TestWatch(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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test := registrytest.New(t, storage.ReplicaSet.Store)
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test.TestWatch(
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validNewReplicaSet(),
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// matching labels
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[]labels.Set{
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{"a": "b"},
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},
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// not matching labels
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[]labels.Set{
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{"a": "c"},
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{"foo": "bar"},
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},
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// matching fields
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[]fields.Set{
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{"status.replicas": "5"},
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{"metadata.name": "foo"},
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{"status.replicas": "5", "metadata.name": "foo"},
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},
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// not matchin fields
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[]fields.Set{
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{"status.replicas": "10"},
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{"metadata.name": "bar"},
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{"name": "foo"},
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{"status.replicas": "10", "metadata.name": "foo"},
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{"status.replicas": "0", "metadata.name": "bar"},
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},
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)
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}
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func TestScaleGet(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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name := "foo"
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var rs extensions.ReplicaSet
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ctx := api.WithNamespace(api.NewContext(), api.NamespaceDefault)
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key := etcdtest.AddPrefix("/replicasets/" + api.NamespaceDefault + "/" + name)
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if err := storage.ReplicaSet.Storage.Create(ctx, key, &validReplicaSet, &rs, 0); err != nil {
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t.Fatalf("error setting new replica set (key: %s) %v: %v", key, validReplicaSet, err)
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}
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want := &extensions.Scale{
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ObjectMeta: api.ObjectMeta{
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Name: name,
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Namespace: api.NamespaceDefault,
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UID: rs.UID,
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ResourceVersion: rs.ResourceVersion,
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CreationTimestamp: rs.CreationTimestamp,
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},
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Spec: extensions.ScaleSpec{
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Replicas: validReplicaSet.Spec.Replicas,
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},
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Status: extensions.ScaleStatus{
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Replicas: validReplicaSet.Status.Replicas,
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Selector: validReplicaSet.Spec.Selector,
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},
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}
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obj, err := storage.Scale.Get(ctx, name)
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got := obj.(*extensions.Scale)
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if err != nil {
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t.Fatalf("error fetching scale for %s: %v", name, err)
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}
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if !api.Semantic.DeepEqual(got, want) {
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t.Errorf("unexpected scale: %s", diff.ObjectDiff(got, want))
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}
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}
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func TestScaleUpdate(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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name := "foo"
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var rs extensions.ReplicaSet
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ctx := api.WithNamespace(api.NewContext(), api.NamespaceDefault)
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key := etcdtest.AddPrefix("/replicasets/" + api.NamespaceDefault + "/" + name)
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if err := storage.ReplicaSet.Storage.Create(ctx, key, &validReplicaSet, &rs, 0); err != nil {
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t.Fatalf("error setting new replica set (key: %s) %v: %v", key, validReplicaSet, err)
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}
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replicas := 12
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update := extensions.Scale{
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ObjectMeta: api.ObjectMeta{
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Name: name,
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Namespace: api.NamespaceDefault,
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},
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Spec: extensions.ScaleSpec{
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Replicas: int32(replicas),
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},
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}
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if _, _, err := storage.Scale.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update, api.Scheme)); err != nil {
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t.Fatalf("error updating scale %v: %v", update, err)
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}
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obj, err := storage.Scale.Get(ctx, name)
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if err != nil {
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t.Fatalf("error fetching scale for %s: %v", name, err)
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}
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scale := obj.(*extensions.Scale)
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if scale.Spec.Replicas != int32(replicas) {
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t.Errorf("wrong replicas count expected: %d got: %d", replicas, scale.Spec.Replicas)
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}
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update.ResourceVersion = rs.ResourceVersion
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update.Spec.Replicas = 15
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if _, _, err = storage.Scale.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update, api.Scheme)); err != nil && !errors.IsConflict(err) {
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t.Fatalf("unexpected error, expecting an update conflict but got %v", err)
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}
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}
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func TestStatusUpdate(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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ctx := api.WithNamespace(api.NewContext(), api.NamespaceDefault)
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key := etcdtest.AddPrefix("/replicasets/" + api.NamespaceDefault + "/foo")
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if err := storage.ReplicaSet.Storage.Create(ctx, key, &validReplicaSet, nil, 0); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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update := extensions.ReplicaSet{
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ObjectMeta: validReplicaSet.ObjectMeta,
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Spec: extensions.ReplicaSetSpec{
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Replicas: defaultReplicas,
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},
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Status: extensions.ReplicaSetStatus{
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Replicas: defaultReplicas,
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},
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}
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if _, _, err := storage.Status.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update, api.Scheme)); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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obj, err := storage.ReplicaSet.Get(ctx, "foo")
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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rs := obj.(*extensions.ReplicaSet)
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if rs.Spec.Replicas != 7 {
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t.Errorf("we expected .spec.replicas to not be updated but it was updated to %v", rs.Spec.Replicas)
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}
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if rs.Status.Replicas != defaultReplicas {
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t.Errorf("we expected .status.replicas to be updated to %d but it was %v", defaultReplicas, rs.Status.Replicas)
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}
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}
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