| /******************************************************************************* |
| * Copyright (c) 2005, 2007 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.iterators; |
| |
| import java.util.Enumeration; |
| import java.util.Iterator; |
| import java.util.NoSuchElementException; |
| import java.util.Vector; |
| import junit.framework.TestCase; |
| import org.eclipse.jpt.utility.internal.iterators.IteratorEnumeration; |
| |
| public class IteratorEnumerationTests extends TestCase { |
| |
| public IteratorEnumerationTests(String name) { |
| super(name); |
| } |
| |
| public void testHasMoreElements() { |
| int i = 0; |
| for (Enumeration<String> stream = this.buildEnumeration(); stream.hasMoreElements();) { |
| stream.nextElement(); |
| i++; |
| } |
| assertEquals(this.buildVector().size(), i); |
| } |
| |
| public void testHasMoreElementsUpcast() { |
| int i = 0; |
| for (Enumeration<Object> stream = this.buildEnumerationUpcast(); stream.hasMoreElements();) { |
| stream.nextElement(); |
| i++; |
| } |
| assertEquals(this.buildVector().size(), i); |
| } |
| |
| public void testNextElement() { |
| Iterator<String> iterator = this.buildIterator(); |
| for (Enumeration<String> stream = this.buildEnumeration(); stream.hasMoreElements();) { |
| assertEquals("bogus element", iterator.next(), stream.nextElement()); |
| } |
| } |
| |
| public void testNoSuchElementException() { |
| boolean exCaught = false; |
| Enumeration<String> stream = this.buildEnumeration(); |
| String string = null; |
| while (stream.hasMoreElements()) { |
| string = stream.nextElement(); |
| } |
| try { |
| string = stream.nextElement(); |
| } catch (NoSuchElementException ex) { |
| exCaught = true; |
| } |
| assertTrue("NoSuchElementException not thrown: " + string, exCaught); |
| } |
| |
| private Enumeration<String> buildEnumeration() { |
| return this.buildEnumeration(this.buildIterator()); |
| } |
| |
| private Enumeration<Object> buildEnumerationUpcast() { |
| return this.buildEnumerationUpcast(this.buildIterator()); |
| } |
| |
| private Enumeration<String> buildEnumeration(Iterator<String> iterator) { |
| return new IteratorEnumeration<String>(iterator); |
| } |
| |
| private Enumeration<Object> buildEnumerationUpcast(Iterator<String> iterator) { |
| return new IteratorEnumeration<Object>(iterator); |
| } |
| |
| private Iterator<String> buildIterator() { |
| return this.buildVector().iterator(); |
| } |
| |
| private Vector<String> buildVector() { |
| Vector<String> v = new Vector<String>(); |
| v.addElement("one"); |
| v.addElement("two"); |
| v.addElement("three"); |
| v.addElement("four"); |
| v.addElement("five"); |
| v.addElement("six"); |
| v.addElement("seven"); |
| v.addElement("eight"); |
| return v; |
| } |
| |
| } |