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/*******************************************************************************
* Copyright (c) 2009, 2013 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.common.utility.tests.internal.iterable;
import java.util.AbstractCollection;
import java.util.AbstractList;
import java.util.Iterator;
import java.util.Vector;
import junit.framework.TestCase;
import org.eclipse.jpt.common.utility.internal.iterable.IterableTools;
import org.eclipse.jpt.common.utility.internal.transformer.DisabledTransformer;
import org.eclipse.jpt.common.utility.internal.transformer.TransformerAdapter;
@SuppressWarnings("nls")
public class ChainIterableTests
extends TestCase
{
private final static Class<?>[] VECTOR_HIERARCHY = { Vector.class, AbstractList.class, AbstractCollection.class, Object.class };
public ChainIterableTests(String name) {
super(name);
}
public void testNextLink() {
int i = 0;
for (Class<?> clazz : this.buildIterable()) {
assertEquals(VECTOR_HIERARCHY[i++], clazz);
}
}
public void testException() {
Iterable<Class<?>> iterable = IterableTools.chainIterable(Vector.class, DisabledTransformer.<Class<?>, Class<?>>instance());
Iterator<Class<?>> iterator = iterable.iterator();
boolean exCaught = false;
try {
Class<?> clazz = iterator.next();
fail("bogus class: " + clazz);
} catch (RuntimeException ex) {
exCaught = true;
}
assertTrue(exCaught);
}
public void testToString() {
assertNotNull(this.buildIterable().toString());
}
private Iterable<Class<?>> buildIterable() {
return IterableTools.chainIterable(Vector.class, SUPERCLASS_TRANSFORMER);
}
private static final TransformerAdapter<Class<?>, Class<?>> SUPERCLASS_TRANSFORMER = new SuperclassTransformer();
static class SuperclassTransformer
extends TransformerAdapter<Class<?>, Class<?>>
{
@Override
public Class<?> transform(Class<?> clazz) {
return clazz.getSuperclass();
}
}
}
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