mirror of https://github.com/k3s-io/k3s
57 lines
1.6 KiB
Go
57 lines
1.6 KiB
Go
/*
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Copyright 2016 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 storage
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import (
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"sync"
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"testing"
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"time"
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"k8s.io/apimachinery/pkg/fields"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/kubernetes/pkg/api"
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)
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// verifies the cacheWatcher.process goroutine is properly cleaned up even if
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// the writes to cacheWatcher.result channel is blocked.
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func TestCacheWatcherCleanupNotBlockedByResult(t *testing.T) {
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var lock sync.RWMutex
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count := 0
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filter := func(string, labels.Set, fields.Set) bool { return true }
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forget := func(bool) {
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lock.Lock()
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defer lock.Unlock()
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count++
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}
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initEvents := []*watchCacheEvent{
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{Object: &api.Pod{}},
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{Object: &api.Pod{}},
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}
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// set the size of the buffer of w.result to 0, so that the writes to
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// w.result is blocked.
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w := newCacheWatcher(0, 0, initEvents, filter, forget)
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w.Stop()
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if err := wait.PollImmediate(1*time.Second, 5*time.Second, func() (bool, error) {
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lock.RLock()
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defer lock.RUnlock()
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return count == 2, nil
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}); err != nil {
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t.Fatalf("expected forget() to be called twice, because sendWatchCacheEvent should not be blocked by the result channel: %v", err)
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}
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}
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