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//
// ========================================================================
// Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.websocket.jsr356.utils;
import static org.hamcrest.Matchers.nullValue;
import org.eclipse.jetty.websocket.common.util.ReflectUtils;
import org.junit.Assert;
import org.junit.Test;
public class ReflectUtilsTest
{
public static interface Fruit<T>
{
}
public static interface Color<T>
{
}
public static interface Food<T> extends Fruit<T>
{
}
public static abstract class Apple<T extends Object> implements Fruit<T>, Color<String>
{
}
public static abstract class Cherry<A extends Object, B extends Number> implements Fruit<A>, Color<B>
{
}
public static abstract class Banana implements Fruit<String>, Color<String>
{
}
public static class Washington<Z extends Number, X extends Object> extends Cherry<X, Z>
{
}
public static class Rainier extends Washington<Float, Short>
{
}
public static class Pizza implements Food<Integer>
{
}
public static class Cavendish extends Banana
{
}
public static class GrannySmith extends Apple<Long>
{
}
public static class Pear implements Fruit<String>, Color<Double>
{
}
public static class Kiwi implements Fruit<Character>
{
}
@Test
public void testFindGeneric_PearFruit()
{
assertFindGenericClass(Pear.class,Fruit.class,String.class);
}
@Test
public void testFindGeneric_PizzaFruit()
{
assertFindGenericClass(Pizza.class,Fruit.class,Integer.class);
}
@Test
public void testFindGeneric_KiwiFruit()
{
assertFindGenericClass(Kiwi.class,Fruit.class,Character.class);
}
@Test
public void testFindGeneric_PearColor()
{
assertFindGenericClass(Pear.class,Color.class,Double.class);
}
@Test
public void testFindGeneric_GrannySmithFruit()
{
assertFindGenericClass(GrannySmith.class,Fruit.class,Long.class);
}
@Test
public void testFindGeneric_CavendishFruit()
{
assertFindGenericClass(Cavendish.class,Fruit.class,String.class);
}
@Test
public void testFindGeneric_RainierFruit()
{
assertFindGenericClass(Rainier.class,Fruit.class,Short.class);
}
@Test
public void testFindGeneric_WashingtonFruit()
{
// Washington does not have a concrete implementation
// of the Fruit interface, this should return null
Class<?> impl = ReflectUtils.findGenericClassFor(Washington.class,Fruit.class);
Assert.assertThat("Washington -> Fruit implementation",impl,nullValue());
}
private void assertFindGenericClass(Class<?> baseClass, Class<?> ifaceClass, Class<?> expectedClass)
{
Class<?> foundClass = ReflectUtils.findGenericClassFor(baseClass,ifaceClass);
String msg = String.format("Expecting %s<%s> found on %s",ifaceClass.getName(),expectedClass.getName(),baseClass.getName());
Assert.assertEquals(msg,expectedClass,foundClass);
}
}
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