61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
/*
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Copyright 2017 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 waitgroup test cases reference golang sync.WaitGroup https://golang.org/src/sync/waitgroup_test.go.
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package waitgroup
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import (
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"testing"
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)
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func TestWaitGroup(t *testing.T) {
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wg1 := &SafeWaitGroup{}
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wg2 := &SafeWaitGroup{}
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n := 16
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wg1.Add(n)
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wg2.Add(n)
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exited := make(chan bool, n)
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for i := 0; i != n; i++ {
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go func(i int) {
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wg1.Done()
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wg2.Wait()
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exited <- true
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}(i)
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}
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wg1.Wait()
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for i := 0; i != n; i++ {
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select {
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case <-exited:
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t.Fatal("SafeWaitGroup released group too soon")
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default:
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}
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wg2.Done()
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}
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for i := 0; i != n; i++ {
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<-exited // Will block if barrier fails to unlock someone.
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}
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}
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func TestWaitGroupAddFail(t *testing.T) {
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wg := &SafeWaitGroup{}
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wg.Add(1)
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wg.Done()
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wg.Wait()
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if err := wg.Add(1); err == nil {
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t.Errorf("Should return error when add positive after Wait")
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}
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}
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