mirror of https://github.com/perkeep/perkeep.git
75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
/*
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Copyright 2013 Google Inc.
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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 leak
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import (
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"runtime"
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"strings"
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"sync"
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"testing"
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"time"
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)
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func TestLeak(t *testing.T) {
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testLeak(t, true, 1)
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}
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func TestNoLeak(t *testing.T) {
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testLeak(t, false, 0)
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}
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func testLeak(t *testing.T, leak bool, want int) {
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defer func() {
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testHookFinalize = nil
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onLeak = logLeak
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}()
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var mu sync.Mutex // guards leaks
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var leaks []string
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onLeak = func(_ *Checker, stack string) {
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mu.Lock()
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defer mu.Unlock()
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leaks = append(leaks, stack)
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}
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finalizec := make(chan bool)
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testHookFinalize = func() {
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finalizec <- true
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}
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c := make(chan bool)
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go func() {
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ch := NewChecker()
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if !leak {
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ch.Close()
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}
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c <- true
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}()
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<-c
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go runtime.GC()
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select {
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case <-time.After(5 * time.Second):
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t.Error("timeout waiting for finalization")
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case <-finalizec:
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}
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mu.Lock() // no need to unlock
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if len(leaks) != want {
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t.Errorf("got %d leaks; want %d", len(leaks), want)
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}
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if len(leaks) == 1 && !strings.Contains(leaks[0], "leak_test.go") {
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t.Errorf("Leak stack doesn't contain leak_test.go: %s", leaks[0])
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}
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}
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