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https://github.com/k3s-io/kubernetes.git
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94 lines
2.2 KiB
Go
94 lines
2.2 KiB
Go
/*
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Copyright 2015 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 keymutex
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import (
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"testing"
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"time"
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)
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const (
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callbackTimeout = 1 * time.Second
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)
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func Test_SingleLock_NoUnlock(t *testing.T) {
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// Arrange
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km := NewKeyMutex()
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key := "fakeid"
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callbackCh := make(chan interface{})
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// Act
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go lockAndCallback(km, key, callbackCh)
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// Assert
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verifyCallbackHappens(t, callbackCh)
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}
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func Test_SingleLock_SingleUnlock(t *testing.T) {
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// Arrange
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km := NewKeyMutex()
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key := "fakeid"
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callbackCh := make(chan interface{})
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// Act & Assert
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go lockAndCallback(km, key, callbackCh)
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verifyCallbackHappens(t, callbackCh)
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km.UnlockKey(key)
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}
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func Test_DoubleLock_DoubleUnlock(t *testing.T) {
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// Arrange
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km := NewKeyMutex()
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key := "fakeid"
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callbackCh1stLock := make(chan interface{})
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callbackCh2ndLock := make(chan interface{})
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// Act & Assert
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go lockAndCallback(km, key, callbackCh1stLock)
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verifyCallbackHappens(t, callbackCh1stLock)
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go lockAndCallback(km, key, callbackCh2ndLock)
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verifyCallbackDoesntHappens(t, callbackCh2ndLock)
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km.UnlockKey(key)
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verifyCallbackHappens(t, callbackCh2ndLock)
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km.UnlockKey(key)
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}
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func lockAndCallback(km KeyMutex, id string, callbackCh chan<- interface{}) {
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km.LockKey(id)
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callbackCh <- true
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}
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func verifyCallbackHappens(t *testing.T, callbackCh <-chan interface{}) bool {
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select {
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case <-callbackCh:
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return true
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case <-time.After(callbackTimeout):
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t.Fatalf("Timed out waiting for callback.")
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return false
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}
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}
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func verifyCallbackDoesntHappens(t *testing.T, callbackCh <-chan interface{}) bool {
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select {
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case <-callbackCh:
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t.Fatalf("Unexpected callback.")
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return false
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case <-time.After(callbackTimeout):
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return true
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}
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}
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