/*
* Copyright 2002-2014 the original author or authors.
*
* 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 org.springframework.util;
import org.junit.Test;
import org.springframework.util.backoff.BackOffExecution;
import org.springframework.util.backoff.FixedBackOff;
import static org.junit.Assert.*;
/**
* @author Stephane Nicoll
*/
public class FixedBackOffTests {
@Test
public void defaultInstance() {
FixedBackOff backOff = new FixedBackOff();
BackOffExecution execution = backOff.start();
for (int i = 0; i < 100; i++) {
assertEquals(FixedBackOff.DEFAULT_INTERVAL, execution.nextBackOff());
}
}
@Test
public void noAttemptAtAll() {
FixedBackOff backOff = new FixedBackOff(100L, 0L);
BackOffExecution execution = backOff.start();
assertEquals(BackOffExecution.STOP, execution.nextBackOff());
}
@Test
public void maxAttemptsReached() {
FixedBackOff backOff = new FixedBackOff(200L, 2);
BackOffExecution execution = backOff.start();
assertEquals(200l, execution.nextBackOff());
assertEquals(200l, execution.nextBackOff());
assertEquals(BackOffExecution.STOP, execution.nextBackOff());
}
@Test
public void startReturnDifferentInstances() {
FixedBackOff backOff = new FixedBackOff(100L, 1);
BackOffExecution execution = backOff.start();
BackOffExecution execution2 = backOff.start();
assertEquals(100l, execution.nextBackOff());
assertEquals(100l, execution2.nextBackOff());
assertEquals(BackOffExecution.STOP, execution.nextBackOff());
assertEquals(BackOffExecution.STOP, execution2.nextBackOff());
}
@Test
public void liveUpdate() {
FixedBackOff backOff = new FixedBackOff(100L, 1);
BackOffExecution execution = backOff.start();
assertEquals(100l, execution.nextBackOff());
backOff.setInterval(200l);
backOff.setMaxAttempts(2);
assertEquals(200l, execution.nextBackOff());
assertEquals(BackOffExecution.STOP, execution.nextBackOff());
}
@Test
public void toStringContent() {
FixedBackOff backOff = new FixedBackOff(200L, 10);
BackOffExecution execution = backOff.start();
assertEquals("FixedBackOff{interval=200, currentAttempts=0, maxAttempts=10}", execution.toString());
execution.nextBackOff();
assertEquals("FixedBackOff{interval=200, currentAttempts=1, maxAttempts=10}", execution.toString());
execution.nextBackOff();
assertEquals("FixedBackOff{interval=200, currentAttempts=2, maxAttempts=10}", execution.toString());
}
}