/*******************************************************************************
* Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.test.utility.iterators;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Vector;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.eclipse.persistence.tools.workbench.utility.iterators.ReadOnlyIterator;
public class ReadOnlyIteratorTests extends TestCase {
public static Test suite() {
return new TestSuite(ReadOnlyIteratorTests.class);
}
public ReadOnlyIteratorTests(String name) {
super(name);
}
public void testHasNext() {
int i = 0;
for (Iterator stream = this.buildReadOnlyIterator(); stream.hasNext(); ) {
stream.next();
i++;
}
assertEquals(this.buildVector().size(), i);
}
public void testNext() {
Iterator nestedIterator = this.buildNestedIterator();
for (Iterator stream = this.buildReadOnlyIterator(); stream.hasNext(); ) {
assertEquals("bogus element", nestedIterator.next(), stream.next());
}
}
public void testNoSuchElementException() {
boolean exCaught = false;
Iterator stream = this.buildReadOnlyIterator();
String string = null;
while (stream.hasNext()) {
string = (String) stream.next();
}
try {
string = (String) stream.next();
} catch (NoSuchElementException ex) {
exCaught = true;
}
assertTrue("NoSuchElementException not thrown: " + string, exCaught);
}
public void testRemove() {
boolean exCaught = false;
for (Iterator stream = this.buildReadOnlyIterator(); stream.hasNext(); ) {
if (stream.next().equals("three")) {
try {
stream.remove();
} catch (UnsupportedOperationException ex) {
exCaught = true;
}
}
}
assertTrue("UnsupportedOperationException not thrown", exCaught);
}
private Iterator buildReadOnlyIterator() {
return this.buildReadOnlyIterator(this.buildNestedIterator());
}
private Iterator buildReadOnlyIterator(Iterator nestedIterator) {
return new ReadOnlyIterator(nestedIterator);
}
private Iterator buildNestedIterator() {
return this.buildVector().iterator();
}
private Vector buildVector() {
Vector v = new Vector();
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;
}
}