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/*******************************************************************************
* Copyright (c) 2005, 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.utility.tests.internal.enumerations;
import java.util.Enumeration;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
import org.eclipse.jpt.utility.internal.enumerations.EmptyEnumeration;
@SuppressWarnings("nls")
public class EmptyEnumerationTests extends TestCase {
public EmptyEnumerationTests(String name) {
super(name);
}
public void testHasMoreElements() {
int i = 0;
for (Enumeration<Object> stream = EmptyEnumeration.instance(); stream.hasMoreElements();) {
stream.nextElement();
i++;
}
assertEquals(0, i);
}
public void testNextElement() {
for (Enumeration<Object> stream = EmptyEnumeration.instance(); stream.hasMoreElements();) {
fail("bogus element: " + stream.nextElement());
}
}
public void testNoSuchElementException() {
boolean exCaught = false;
Enumeration<Object> stream = EmptyEnumeration.instance();
Object element = null;
while (stream.hasMoreElements()) {
element = stream.nextElement();
}
try {
element = stream.nextElement();
} catch (NoSuchElementException ex) {
exCaught = true;
}
assertTrue("NoSuchElementException not thrown: " + element, exCaught);
}
}
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