| /* |
| Copyright 2015 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 framework |
| |
| import ( |
| "sync" |
| "testing" |
| |
| "k8s.io/api/core/v1" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/apimachinery/pkg/watch" |
| ) |
| |
| // ensure the watch delivers the requested and only the requested items. |
| func consume(t *testing.T, w watch.Interface, rvs []string, done *sync.WaitGroup) { |
| defer done.Done() |
| for _, rv := range rvs { |
| got, ok := <-w.ResultChan() |
| if !ok { |
| t.Errorf("%#v: unexpected channel close, wanted %v", rvs, rv) |
| return |
| } |
| gotRV := got.Object.(*v1.Pod).ObjectMeta.ResourceVersion |
| if e, a := rv, gotRV; e != a { |
| t.Errorf("wanted %v, got %v", e, a) |
| } else { |
| t.Logf("Got %v as expected", gotRV) |
| } |
| } |
| // We should not get anything else. |
| got, open := <-w.ResultChan() |
| if open { |
| t.Errorf("%#v: unwanted object %#v", rvs, got) |
| } |
| } |
| |
| func TestRCNumber(t *testing.T) { |
| pod := func(name string) *v1.Pod { |
| return &v1.Pod{ |
| ObjectMeta: metav1.ObjectMeta{ |
| Name: name, |
| }, |
| } |
| } |
| |
| wg := &sync.WaitGroup{} |
| wg.Add(3) |
| |
| source := NewFakeControllerSource() |
| source.Add(pod("foo")) |
| source.Modify(pod("foo")) |
| source.Modify(pod("foo")) |
| |
| w, err := source.Watch(metav1.ListOptions{ResourceVersion: "1"}) |
| if err != nil { |
| t.Fatalf("Unexpected error: %v", err) |
| } |
| go consume(t, w, []string{"2", "3"}, wg) |
| |
| list, err := source.List(metav1.ListOptions{}) |
| if err != nil { |
| t.Fatalf("Unexpected error: %v", err) |
| } |
| if e, a := "3", list.(*v1.List).ResourceVersion; e != a { |
| t.Errorf("wanted %v, got %v", e, a) |
| } |
| |
| w2, err := source.Watch(metav1.ListOptions{ResourceVersion: "2"}) |
| if err != nil { |
| t.Fatalf("Unexpected error: %v", err) |
| } |
| go consume(t, w2, []string{"3"}, wg) |
| |
| w3, err := source.Watch(metav1.ListOptions{ResourceVersion: "3"}) |
| if err != nil { |
| t.Fatalf("Unexpected error: %v", err) |
| } |
| go consume(t, w3, []string{}, wg) |
| source.Shutdown() |
| wg.Wait() |
| } |