/*
* Copyright (c) 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.google.api.client.util;
import com.google.api.client.testing.util.MockBackOff;
import com.google.api.client.testing.util.MockSleeper;
import junit.framework.TestCase;
/**
* Tests {@link BackOffUtils}.
*
* @author Yaniv Inbar
*/
public class BackOffUtilsTest extends TestCase {
public void testNext() throws Exception {
subtestNext(7);
subtestNext(0);
subtestNext(BackOff.STOP);
}
public void subtestNext(long millis) throws Exception {
MockSleeper sleeper = new MockSleeper();
MockBackOff backOff = new MockBackOff().setBackOffMillis(millis);
if (millis == BackOff.STOP) {
backOff.setMaxTries(0);
}
int retries = 0;
while (retries <= backOff.getMaxTries() + 1) {
boolean next = BackOffUtils.next(sleeper, backOff);
assertEquals(retries < backOff.getMaxTries(), next);
if (next) {
retries++;
}
assertEquals(retries, sleeper.getCount());
assertEquals(retries, backOff.getNumberOfTries());
if (!next) {
break;
}
assertEquals(millis, sleeper.getLastMillis());
}
}
}