kubernetes metric_recorder_test 源码
kubernetes metric_recorder_test 代码
文件路径：/pkg/scheduler/metrics/metric_recorder_test.go
/*
Copyright 2019 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 metrics
import (
"sync"
"sync/atomic"
"testing"
)
var _ MetricRecorder = &fakePodsRecorder{}
type fakePodsRecorder struct {
counter int64
}
func (r *fakePodsRecorder) Inc() {
atomic.AddInt64(&r.counter, 1)
}
func (r *fakePodsRecorder) Dec() {
atomic.AddInt64(&r.counter, -1)
}
func (r *fakePodsRecorder) Clear() {
atomic.StoreInt64(&r.counter, 0)
}
func TestInc(t *testing.T) {
fakeRecorder := fakePodsRecorder{}
var wg sync.WaitGroup
loops := 100
wg.Add(loops)
for i := 0; i < loops; i++ {
go func() {
fakeRecorder.Inc()
wg.Done()
}()
}
wg.Wait()
if fakeRecorder.counter != int64(loops) {
t.Errorf("Expected %v, got %v", loops, fakeRecorder.counter)
}
}
func TestDec(t *testing.T) {
fakeRecorder := fakePodsRecorder{counter: 100}
var wg sync.WaitGroup
loops := 100
wg.Add(loops)
for i := 0; i < loops; i++ {
go func() {
fakeRecorder.Dec()
wg.Done()
}()
}
wg.Wait()
if fakeRecorder.counter != int64(0) {
t.Errorf("Expected %v, got %v", loops, fakeRecorder.counter)
}
}
func TestClear(t *testing.T) {
fakeRecorder := fakePodsRecorder{}
var wg sync.WaitGroup
incLoops, decLoops := 100, 80
wg.Add(incLoops + decLoops)
for i := 0; i < incLoops; i++ {
go func() {
fakeRecorder.Inc()
wg.Done()
}()
}
for i := 0; i < decLoops; i++ {
go func() {
fakeRecorder.Dec()
wg.Done()
}()
}
wg.Wait()
if fakeRecorder.counter != int64(incLoops-decLoops) {
t.Errorf("Expected %v, got %v", incLoops-decLoops, fakeRecorder.counter)
}
// verify Clear() works
fakeRecorder.Clear()
if fakeRecorder.counter != int64(0) {
t.Errorf("Expected %v, got %v", 0, fakeRecorder.counter)
}
}
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