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kube-arangodb/pkg/util/probe/liveness_test.go
2022-01-10 12:35:49 +01:00

80 lines
1.9 KiB
Go

//
// DISCLAIMER
//
// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany
//
// 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.
//
// Copyright holder is ArangoDB GmbH, Cologne, Germany
//
package probe
import (
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestLivenessLock(t *testing.T) {
p := &LivenessProbe{}
assert.True(t, p.waitUntilNotLocked(time.Millisecond))
// Test single lock
p.Lock()
assert.False(t, p.waitUntilNotLocked(time.Millisecond))
p.Unlock()
assert.True(t, p.waitUntilNotLocked(time.Millisecond))
// Test multiple locks
p.Lock()
assert.False(t, p.waitUntilNotLocked(time.Millisecond))
p.Lock()
assert.False(t, p.waitUntilNotLocked(time.Millisecond))
p.Unlock()
assert.False(t, p.waitUntilNotLocked(time.Millisecond))
p.Unlock()
assert.True(t, p.waitUntilNotLocked(time.Millisecond))
// Test concurrent waits
wg := sync.WaitGroup{}
p.Lock()
wg.Add(1)
go func() {
// Waiter 1
defer wg.Done()
assert.True(t, p.waitUntilNotLocked(time.Millisecond*200))
}()
wg.Add(1)
go func() {
// Waiter 2
defer wg.Done()
assert.True(t, p.waitUntilNotLocked(time.Millisecond*200))
}()
wg.Add(1)
go func() {
// Waiter 3
defer wg.Done()
assert.False(t, p.waitUntilNotLocked(time.Millisecond*5))
}()
wg.Add(1)
go func() {
// Unlocker
defer wg.Done()
time.Sleep(time.Millisecond * 50)
p.Unlock()
}()
wg.Wait()
}