/*
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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 workqueue
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import (
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"testing"
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"time"
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"k8s.io/apimachinery/pkg/util/clock"
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)
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func TestRateLimitingQueue(t *testing.T) {
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limiter := NewItemExponentialFailureRateLimiter(1*time.Millisecond, 1*time.Second)
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queue := NewRateLimitingQueue(limiter).(*rateLimitingType)
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fakeClock := clock.NewFakeClock(time.Now())
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delayingQueue := &delayingType{
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Interface: New(),
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clock: fakeClock,
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heartbeat: fakeClock.NewTicker(maxWait),
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stopCh: make(chan struct{}),
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waitingForAddCh: make(chan *waitFor, 1000),
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metrics: newRetryMetrics(""),
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}
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queue.DelayingInterface = delayingQueue
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queue.AddRateLimited("one")
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waitEntry := <-delayingQueue.waitingForAddCh
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if e, a := 1*time.Millisecond, waitEntry.readyAt.Sub(fakeClock.Now()); e != a {
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t.Errorf("expected %v, got %v", e, a)
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}
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queue.AddRateLimited("one")
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waitEntry = <-delayingQueue.waitingForAddCh
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if e, a := 2*time.Millisecond, waitEntry.readyAt.Sub(fakeClock.Now()); e != a {
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t.Errorf("expected %v, got %v", e, a)
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}
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if e, a := 2, queue.NumRequeues("one"); e != a {
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t.Errorf("expected %v, got %v", e, a)
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}
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queue.AddRateLimited("two")
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waitEntry = <-delayingQueue.waitingForAddCh
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if e, a := 1*time.Millisecond, waitEntry.readyAt.Sub(fakeClock.Now()); e != a {
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t.Errorf("expected %v, got %v", e, a)
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}
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queue.AddRateLimited("two")
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waitEntry = <-delayingQueue.waitingForAddCh
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if e, a := 2*time.Millisecond, waitEntry.readyAt.Sub(fakeClock.Now()); e != a {
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t.Errorf("expected %v, got %v", e, a)
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}
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queue.Forget("one")
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if e, a := 0, queue.NumRequeues("one"); e != a {
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t.Errorf("expected %v, got %v", e, a)
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}
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queue.AddRateLimited("one")
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waitEntry = <-delayingQueue.waitingForAddCh
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if e, a := 1*time.Millisecond, waitEntry.readyAt.Sub(fakeClock.Now()); e != a {
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t.Errorf("expected %v, got %v", e, a)
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}
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}
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