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/*******************************************************************************
* 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.Iterator;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
import org.eclipse.jpt.utility.internal.iterators.ArrayIterator;
public class ArrayIteratorTests extends TestCase {
public ArrayIteratorTests(String name) {
super(name);
}
public void testHasNext() {
int i = 0;
for (Iterator<String> stream = this.buildIterator(); stream.hasNext();) {
stream.next();
i++;
}
assertEquals(this.buildArray().length, i);
}
public void testNext() {
int i = 0;
for (Iterator<String> stream = this.buildIterator(); stream.hasNext();) {
assertEquals("bogus element", ++i, Integer.parseInt(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("3")) {
try {
stream.remove();
} catch (UnsupportedOperationException ex) {
exCaught = true;
}
}
}
assertTrue("UnsupportedOperationException not thrown", exCaught);
}
public void testIllegalArgumentException() {
this.triggerIllegalArgumentException(-1, 1);
this.triggerIllegalArgumentException(8, 1);
this.triggerIllegalArgumentException(0, -1);
this.triggerIllegalArgumentException(0, 9);
}
public void testGenerics() {
Integer[] integers = new Integer[3];
integers[0] = 0;
integers[1] = 1;
integers[2] = 2;
int i = 0;
for (Iterator<Number> stream = new ArrayIterator<Number>(integers); stream.hasNext();) {
assertEquals(i++, stream.next().intValue());
}
assertEquals(integers.length, i);
}
public void testVarargs() {
int i = 0;
for (Iterator<Number> stream = new ArrayIterator<Number>(0, 1, 2); stream.hasNext();) {
assertEquals(i++, stream.next().intValue());
}
assertEquals(3, i);
}
public void triggerIllegalArgumentException(int start, int length) {
boolean exCaught = false;
Iterator<String> stream = null;
try {
stream = this.buildIterator(start, length);
} catch (IllegalArgumentException ex) {
exCaught = true;
}
assertTrue("IllegalArgumentException not thrown: " + stream, exCaught);
}
Iterator<String> buildIterator() {
return this.buildIterator(this.buildArray());
}
Iterator<String> buildIterator(String[] array) {
return new ArrayIterator<String>(array);
}
Iterator<String> buildIterator(int start, int length) {
return this.buildIterator(this.buildArray(), start, length);
}
Iterator<String> buildIterator(String[] array, int start, int length) {
return new ArrayIterator<String>(array, start, length);
}
String[] buildArray() {
return new String[] { "1", "2", "3", "4", "5", "6", "7", "8" };
}
}
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