| /******************************************************************************* |
| * 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.EnumerationIterator; |
| |
| public class EnumerationIteratorTests extends TestCase { |
| |
| public EnumerationIteratorTests(String name) { |
| super(name); |
| } |
| |
| public void testHasNext() { |
| int i = 0; |
| for (Iterator<String> stream = this.buildIterator(); stream.hasNext();) { |
| stream.next(); |
| i++; |
| } |
| assertEquals(this.buildVector().size(), i); |
| } |
| |
| public void testHasNextUpcast() { |
| int i = 0; |
| for (Iterator<Object> stream = this.buildIteratorUpcast(); stream.hasNext();) { |
| stream.next(); |
| i++; |
| } |
| assertEquals(this.buildVector().size(), i); |
| } |
| |
| public void testNext() { |
| Enumeration<String> enumeration = this.buildEnumeration(); |
| for (Iterator<String> stream = this.buildIterator(); stream.hasNext();) { |
| assertEquals("bogus element", enumeration.nextElement(), stream.next()); |
| } |
| } |
| |
| public void testNextUpcast() { |
| Enumeration<String> enumeration = this.buildEnumeration(); |
| for (Iterator<Object> stream = this.buildIteratorUpcast(); stream.hasNext();) { |
| assertEquals("bogus element", enumeration.nextElement(), stream.next()); |
| } |
| } |
| |
| public void testNoSuchElementException() { |
| boolean exCaught = false; |
| Iterator<String> stream = this.buildIterator(); |
| String string = null; |
| while (stream.hasNext()) { |
| string = stream.next(); |
| } |
| try { |
| string = stream.next(); |
| } catch (NoSuchElementException ex) { |
| exCaught = true; |
| } |
| assertTrue("NoSuchElementException not thrown: " + string, exCaught); |
| } |
| |
| public void testUnsupportedOperationException() { |
| boolean exCaught = false; |
| for (Iterator<String> stream = this.buildIterator(); stream.hasNext();) { |
| if (stream.next().equals("three")) { |
| try { |
| stream.remove(); |
| } catch (UnsupportedOperationException ex) { |
| exCaught = true; |
| } |
| } |
| } |
| assertTrue("UnsupportedOperationException not thrown", exCaught); |
| } |
| |
| private Iterator<String> buildIterator() { |
| return this.buildIterator(this.buildEnumeration()); |
| } |
| |
| private Iterator<String> buildIterator(Enumeration<String> enumeration) { |
| return new EnumerationIterator<String>(enumeration); |
| } |
| |
| private Enumeration<String> buildEnumeration() { |
| return this.buildVector().elements(); |
| } |
| |
| 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; |
| } |
| |
| private Iterator<Object> buildIteratorUpcast() { |
| return this.buildIteratorUpcast(this.buildEnumeration()); |
| } |
| |
| private Iterator<Object> buildIteratorUpcast(Enumeration<String> enumeration) { |
| return new EnumerationIterator<Object>(enumeration); |
| } |
| |
| } |