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https://github.com/etcd-io/etcd.git
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be3e87b238
CI is slow sometime. To make the test less flaky, we increases the timeout. This does not affect the correctness, but the test might take longer to finish or to fail.
97 lines
1.8 KiB
Go
97 lines
1.8 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package fileutil
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import (
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"io/ioutil"
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"os"
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"testing"
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"time"
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)
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func TestLockAndUnlock(t *testing.T) {
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f, err := ioutil.TempFile("", "lock")
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if err != nil {
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t.Fatal(err)
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}
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f.Close()
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defer func() {
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err := os.Remove(f.Name())
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if err != nil {
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t.Fatal(err)
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}
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}()
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// lock the file
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l, err := NewLock(f.Name())
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if err != nil {
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t.Fatal(err)
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}
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defer l.Destroy()
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err = l.Lock()
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if err != nil {
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t.Fatal(err)
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}
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// try lock a locked file
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dupl, err := NewLock(f.Name())
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if err != nil {
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t.Fatal(err)
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}
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err = dupl.TryLock()
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if err != ErrLocked {
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t.Errorf("err = %v, want %v", err, ErrLocked)
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}
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// unlock the file
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err = l.Unlock()
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if err != nil {
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t.Fatal(err)
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}
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// try lock the unlocked file
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err = dupl.TryLock()
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if err != nil {
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t.Errorf("err = %v, want %v", err, nil)
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}
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defer dupl.Destroy()
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// blocking on locked file
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locked := make(chan struct{}, 1)
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go func() {
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l.Lock()
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locked <- struct{}{}
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}()
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select {
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case <-locked:
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t.Error("unexpected unblocking")
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case <-time.After(100 * time.Millisecond):
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}
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// unlock
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err = dupl.Unlock()
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if err != nil {
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t.Fatal(err)
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}
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// the previously blocked routine should be unblocked
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select {
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case <-locked:
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case <-time.After(1 * time.Second):
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t.Error("unexpected blocking")
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}
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}
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