/*
* Copyright 2002-2015 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.core;
import java.util.Arrays;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* @author Juergen Hoeller
* @author Chris Shepperd
*/
@SuppressWarnings("unchecked")
public class ExceptionDepthComparatorTests {
@Test
public void targetBeforeSameDepth() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(TargetException.class, SameDepthException.class);
assertEquals(TargetException.class, foundClass);
}
@Test
public void sameDepthBeforeTarget() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(SameDepthException.class, TargetException.class);
assertEquals(TargetException.class, foundClass);
}
@Test
public void lowestDepthBeforeTarget() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(LowestDepthException.class, TargetException.class);
assertEquals(TargetException.class, foundClass);
}
@Test
public void targetBeforeLowestDepth() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(TargetException.class, LowestDepthException.class);
assertEquals(TargetException.class, foundClass);
}
@Test
public void noDepthBeforeTarget() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(NoDepthException.class, TargetException.class);
assertEquals(TargetException.class, foundClass);
}
@Test
public void noDepthBeforeHighestDepth() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(NoDepthException.class, HighestDepthException.class);
assertEquals(HighestDepthException.class, foundClass);
}
@Test
public void highestDepthBeforeNoDepth() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(HighestDepthException.class, NoDepthException.class);
assertEquals(HighestDepthException.class, foundClass);
}
@Test
public void highestDepthBeforeLowestDepth() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(HighestDepthException.class, LowestDepthException.class);
assertEquals(LowestDepthException.class, foundClass);
}
@Test
public void lowestDepthBeforeHighestDepth() throws Exception {
Class<? extends Throwable> foundClass = findClosestMatch(LowestDepthException.class, HighestDepthException.class);
assertEquals(LowestDepthException.class, foundClass);
}
private Class<? extends Throwable> findClosestMatch(
Class<? extends Throwable>... classes) {
return ExceptionDepthComparator.findClosestMatch(Arrays.asList(classes), new TargetException());
}
@SuppressWarnings("serial")
public class HighestDepthException extends Throwable {
}
@SuppressWarnings("serial")
public class LowestDepthException extends HighestDepthException {
}
@SuppressWarnings("serial")
public class TargetException extends LowestDepthException {
}
@SuppressWarnings("serial")
public class SameDepthException extends LowestDepthException {
}
@SuppressWarnings("serial")
public class NoDepthException extends TargetException {
}
}