/**
* Copyright 2016 LinkedIn Corp. All rights reserved.
*
* 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.
*/
package com.github.ambry.utils;
import org.junit.Assert;
import org.junit.Test;
/**
* Mocks time and tests the throttler code
*/
public class ThrottlerTest {
@Test
public void throttlerTest() throws InterruptedException {
MockThrottlerTime time = new MockThrottlerTime();
time.currentMilliseconds = 0;
time.sleepTimeExpected = 0;
Throttler throttler = new Throttler(100, 10, true, time);
throttler.maybeThrottle(50);
Assert.assertEquals(time.currentMilliseconds, 0);
time.currentMilliseconds = 11;
time.sleepTimeExpected = 1489;
throttler.maybeThrottle(100);
time.currentMilliseconds = 22;
time.sleepTimeExpected = 4989;
throttler.maybeThrottle(500);
Assert.assertEquals(time.currentMilliseconds, 5011);
}
class MockThrottlerTime extends MockTime {
long sleepTimeExpected;
@Override
public void sleep(long ms) {
currentMilliseconds += ms;
if (sleepTimeExpected != ms) {
throw new IllegalArgumentException();
}
}
}
}