mirror of https://github.com/k3s-io/k3s
77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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 util
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import (
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"testing"
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"time"
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)
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func TestBasicThrottle(t *testing.T) {
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ticker := make(chan time.Time, 1)
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r := newTokenBucketRateLimiterFromTicker(ticker, 3)
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for i := 0; i < 3; i++ {
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if !r.CanAccept() {
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t.Error("unexpected false accept")
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}
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}
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if r.CanAccept() {
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t.Error("unexpected true accept")
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}
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}
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func TestIncrementThrottle(t *testing.T) {
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ticker := make(chan time.Time, 1)
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r := newTokenBucketRateLimiterFromTicker(ticker, 1)
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if !r.CanAccept() {
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t.Error("unexpected false accept")
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}
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if r.CanAccept() {
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t.Error("unexpected true accept")
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}
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ticker <- time.Now()
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r.step()
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if !r.CanAccept() {
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t.Error("unexpected false accept")
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}
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}
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func TestOverBurst(t *testing.T) {
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ticker := make(chan time.Time, 1)
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r := newTokenBucketRateLimiterFromTicker(ticker, 3)
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for i := 0; i < 4; i++ {
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ticker <- time.Now()
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r.step()
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}
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}
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func TestThrottle(t *testing.T) {
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r := NewTokenBucketRateLimiter(10, 5)
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// Should consume 5 tokens immediately, then
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// the remaining 11 should take at least 1 second (0.1s each)
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expectedFinish := time.Now().Add(time.Second * 1)
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for i := 0; i < 16; i++ {
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r.Accept()
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}
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if time.Now().Before(expectedFinish) {
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t.Error("rate limit was not respected, finished too early")
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}
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}
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