/*
* Copyright 2013 Netflix, 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 feign;
import org.testng.annotations.Test;
import java.util.Date;
import feign.Retryer.Default;
import static org.testng.Assert.assertEquals;
@Test
public class DefaultRetryerTest {
@Test(expectedExceptions = RetryableException.class)
public void only5TriesAllowedAndExponentialBackoff() throws Exception {
RetryableException e = new RetryableException(null, null, null);
Default retryer = new Retryer.Default();
assertEquals(retryer.attempt, 1);
assertEquals(retryer.sleptForMillis, 0);
retryer.continueOrPropagate(e);
assertEquals(retryer.attempt, 2);
assertEquals(retryer.sleptForMillis, 150);
retryer.continueOrPropagate(e);
assertEquals(retryer.attempt, 3);
assertEquals(retryer.sleptForMillis, 375);
retryer.continueOrPropagate(e);
assertEquals(retryer.attempt, 4);
assertEquals(retryer.sleptForMillis, 712);
retryer.continueOrPropagate(e);
assertEquals(retryer.attempt, 5);
assertEquals(retryer.sleptForMillis, 1218);
retryer.continueOrPropagate(e);
// fail
}
@Test public void considersRetryAfterButNotMoreThanMaxPeriod() throws Exception {
Default retryer = new Retryer.Default() {
protected long currentTimeMillis() {
return 0;
}
};
retryer.continueOrPropagate(new RetryableException(null, null, new Date(5000)));
assertEquals(retryer.attempt, 2);
assertEquals(retryer.sleptForMillis, 1000);
}
}