/**
* Copyright 2013 Google Inc.
*
* 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.
*/
package com.matthewmitchell.nubitsj.utils;
import com.matthewmitchell.nubitsj.core.Utils;
import org.junit.Before;
import org.junit.Test;
import java.util.PriorityQueue;
import static org.junit.Assert.*;
/**
*/
public class ExponentialBackoffTest {
private ExponentialBackoff.Params params;
private ExponentialBackoff backoff;
@Before
public void setUp() {
Utils.setMockClock(System.currentTimeMillis() / 1000);
params = new ExponentialBackoff.Params();
backoff = new ExponentialBackoff(params);
}
@Test
public void testSuccess() {
assertEquals(Utils.currentTimeMillis(), backoff.getRetryTime());
backoff.trackFailure();
backoff.trackFailure();
backoff.trackSuccess();
assertEquals(Utils.currentTimeMillis(), backoff.getRetryTime());
}
@Test
public void testFailure() {
assertEquals(Utils.currentTimeMillis(), backoff.getRetryTime());
backoff.trackFailure();
backoff.trackFailure();
backoff.trackFailure();
assertEquals(Utils.currentTimeMillis() + 121, backoff.getRetryTime());
}
@Test
public void testInQueue() {
PriorityQueue<ExponentialBackoff> queue = new PriorityQueue<ExponentialBackoff>();
ExponentialBackoff backoff1 = new ExponentialBackoff(params);
backoff.trackFailure();
backoff.trackFailure();
backoff1.trackFailure();
backoff1.trackFailure();
backoff1.trackFailure();
queue.offer(backoff);
queue.offer(backoff1);
assertEquals(queue.poll(), backoff); // The one with soonest retry time
assertEquals(queue.peek(), backoff1);
queue.offer(backoff);
assertEquals(queue.poll(), backoff); // Still the same one
}
}