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/*
* Copyright 2015 Open Networking Laboratory
*
* 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.onlab.util;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
/**
* Unit tests for RetryingFunction.
*
*/
public class RetryingFunctionTest {
private int round;
@Before
public void setUp() {
round = 1;
}
@After
public void tearDown() {
round = 0;
}
@Test(expected = RetryableException.class)
public void testNoRetries() {
new RetryingFunction<>(this::succeedAfterOneFailure, RetryableException.class, 0, 10).apply(null);
}
@Test
public void testSuccessAfterOneRetry() {
new RetryingFunction<>(this::succeedAfterOneFailure, RetryableException.class, 1, 10).apply(null);
}
@Test(expected = RetryableException.class)
public void testFailureAfterOneRetry() {
new RetryingFunction<>(this::succeedAfterTwoFailures, RetryableException.class, 1, 10).apply(null);
}
@Test
public void testFailureAfterTwoRetries() {
new RetryingFunction<>(this::succeedAfterTwoFailures, RetryableException.class, 2, 10).apply(null);
}
@Test(expected = NonRetryableException.class)
public void testFailureWithNonRetryableFailure() {
new RetryingFunction<>(this::failCompletely, RetryableException.class, 2, 10).apply(null);
}
private String succeedAfterOneFailure(String input) {
if (round++ <= 1) {
throw new RetryableException();
} else {
return "pass";
}
}
private String succeedAfterTwoFailures(String input) {
if (round++ <= 2) {
throw new RetryableException();
} else {
return "pass";
}
}
private String failCompletely(String input) {
if (round++ <= 1) {
throw new NonRetryableException();
} else {
return "pass";
}
}
private class RetryableException extends RuntimeException {
}
private class NonRetryableException extends RuntimeException {
}
}
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