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/*******************************************************************************
* Copyright (c) 2009 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.iterables;
import java.util.Iterator;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
import org.eclipse.jpt.common.utility.internal.iterables.SingleElementIterable;
@SuppressWarnings("nls")
public class SingleElementIterableTests extends TestCase {
public SingleElementIterableTests(String name) {
super(name);
}
public void testIterator() {
for (String s : this.buildSingleElementIterable()) {
assertEquals(this.singleElement(), s);
}
}
public void testNoSuchElementException() {
boolean exCaught = false;
Iterator<String> stream = this.buildSingleElementIterable().iterator();
String string = stream.next();
try {
string = stream.next();
fail("bogus element: " + string);
} catch (NoSuchElementException ex) {
exCaught = true;
}
assertTrue(exCaught);
}
public void testRemove() {
boolean exCaught = false;
for (Iterator<String> stream = this.buildSingleElementIterable().iterator(); stream.hasNext(); ) {
if (stream.next().equals(this.singleElement())) {
try {
stream.remove();
} catch (UnsupportedOperationException ex) {
exCaught = true;
}
}
}
assertTrue("UnsupportedOperationException not thrown", exCaught);
}
protected Iterable<String> buildSingleElementIterable() {
return new SingleElementIterable<String>(this.singleElement());
}
protected String singleElement() {
return "single element";
}
}
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