kubernetes streamwatcher_test 源码
kubernetes streamwatcher_test 代码
文件路径：/staging/src/k8s.io/apimachinery/pkg/watch/streamwatcher_test.go
/*
Copyright 2014 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 watch_test
import (
"fmt"
"io"
"reflect"
"testing"
"time"
"k8s.io/apimachinery/pkg/runtime"
. "k8s.io/apimachinery/pkg/watch"
)
type fakeDecoder struct {
items chan Event
err error
}
func (f fakeDecoder) Decode() (action EventType, object runtime.Object, err error) {
if f.err != nil {
return "", nil, f.err
}
item, open := <-f.items
if !open {
return action, nil, io.EOF
}
return item.Type, item.Object, nil
}
func (f fakeDecoder) Close() {
if f.items != nil {
close(f.items)
}
}
type fakeReporter struct {
err error
}
func (f *fakeReporter) AsObject(err error) runtime.Object {
f.err = err
return runtime.Unstructured(nil)
}
func TestStreamWatcher(t *testing.T) {
table := []Event{
{Type: Added, Object: testType("foo")},
}
fd := fakeDecoder{items: make(chan Event, 5)}
sw := NewStreamWatcher(fd, nil)
for _, item := range table {
fd.items <- item
got, open := <-sw.ResultChan()
if !open {
t.Errorf("unexpected early close")
}
if e, a := item, got; !reflect.DeepEqual(e, a) {
t.Errorf("expected %v, got %v", e, a)
}
}
sw.Stop()
_, open := <-sw.ResultChan()
if open {
t.Errorf("Unexpected failure to close")
}
}
func TestStreamWatcherError(t *testing.T) {
fd := fakeDecoder{err: fmt.Errorf("test error")}
fr := &fakeReporter{}
sw := NewStreamWatcher(fd, fr)
evt, ok := <-sw.ResultChan()
if !ok {
t.Fatalf("unexpected close")
}
if evt.Type != Error || evt.Object != runtime.Unstructured(nil) {
t.Fatalf("unexpected object: %#v", evt)
}
_, ok = <-sw.ResultChan()
if ok {
t.Fatalf("unexpected open channel")
}
sw.Stop()
_, ok = <-sw.ResultChan()
if ok {
t.Fatalf("unexpected open channel")
}
}
func TestStreamWatcherRace(t *testing.T) {
fd := fakeDecoder{err: fmt.Errorf("test error")}
fr := &fakeReporter{}
sw := NewStreamWatcher(fd, fr)
time.Sleep(10 * time.Millisecond)
sw.Stop()
time.Sleep(10 * time.Millisecond)
_, ok := <-sw.ResultChan()
if ok {
t.Fatalf("unexpected pending send")
}
}
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