/*
* Copyright 2007-2009 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package org.visage.runtime.sequence;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.visage.runtime.VisageTestCase;
import org.visage.runtime.TypeInfo;
import org.junit.Assert;
/**
*
* @author Michael Heinrichs
*/
public class AbstractSequenceTest extends VisageTestCase {
public static class MyAbstractSequence<T> extends AbstractSequence<T> {
private final T[] array;
public MyAbstractSequence(TypeInfo<T> ti, T... values) {
super(ti);
this.array = values;
}
@Override
public int size() {
return array.length;
}
@Override
public T get(int position) {
if (position < 0 || position >= array.length)
return getDefaultValue();
else
return array[position];
}
}
private Sequence<Integer> EMPTY_SEQUENCE = new MyAbstractSequence<Integer>(TypeInfo.Integer);
private Sequence<Integer> SINGLETON_SEQUENCE = new MyAbstractSequence<Integer>(TypeInfo.Integer, 1);
private Sequence<Integer> THREE_ELEMENTS = new MyAbstractSequence<Integer>(TypeInfo.Integer, 1, 2, 3);
private void testIteratorHelper (Iterator<Integer> it, Integer... values) {
for (Integer x : values) {
assertEquals(true, it.hasNext());
assertEquals(x, it.next());
}
assertEquals(false, it.hasNext());
try {
it.next();
fail("Expected NoSuchElementException");
} catch (NoSuchElementException ex) {
// ok
} catch (Exception ex) {
fail("Unexpected exception: " + ex);
}
}
public void testIterator() {
testIteratorHelper (EMPTY_SEQUENCE.iterator());
testIteratorHelper (SINGLETON_SEQUENCE.iterator(), 1);
testIteratorHelper (THREE_ELEMENTS.iterator(), 1, 2, 3);
testIteratorHelper (EMPTY_SEQUENCE.iterator(-1, 0));
testIteratorHelper (EMPTY_SEQUENCE.iterator(0, 0));
testIteratorHelper (EMPTY_SEQUENCE.iterator(0, 1));
testIteratorHelper (SINGLETON_SEQUENCE.iterator(-1, -1));
testIteratorHelper (SINGLETON_SEQUENCE.iterator(-1, 0), 1);
testIteratorHelper (SINGLETON_SEQUENCE.iterator(-1, 1), 1);
testIteratorHelper (SINGLETON_SEQUENCE.iterator(0, -1));
testIteratorHelper (SINGLETON_SEQUENCE.iterator(0, 0), 1);
testIteratorHelper (SINGLETON_SEQUENCE.iterator(0, 1), 1);
testIteratorHelper (SINGLETON_SEQUENCE.iterator(1, 1));
testIteratorHelper (THREE_ELEMENTS.iterator(-1, -1));
testIteratorHelper (THREE_ELEMENTS.iterator(-1, 0), 1);
testIteratorHelper (THREE_ELEMENTS.iterator(-1, 1), 1, 2);
testIteratorHelper (THREE_ELEMENTS.iterator(0, -1));
testIteratorHelper (THREE_ELEMENTS.iterator(0, 0), 1);
testIteratorHelper (THREE_ELEMENTS.iterator(0, 1), 1, 2);
testIteratorHelper (THREE_ELEMENTS.iterator(0, 2), 1, 2, 3);
testIteratorHelper (THREE_ELEMENTS.iterator(0, 3), 1, 2, 3);
testIteratorHelper (THREE_ELEMENTS.iterator(1, 1), 2);
testIteratorHelper (THREE_ELEMENTS.iterator(1, 2), 2, 3);
testIteratorHelper (THREE_ELEMENTS.iterator(1, 3), 2, 3);
testIteratorHelper (THREE_ELEMENTS.iterator(2, 2), 3);
testIteratorHelper (THREE_ELEMENTS.iterator(2, 3), 3);
testIteratorHelper (THREE_ELEMENTS.iterator(3, 3));
}
public void testToArray() {
Object[] actuals = new Object[0];
EMPTY_SEQUENCE.toArray(0, 0, actuals, 0);
Assert.assertArrayEquals(new Object[0], actuals);
assertEquals(EMPTY_SEQUENCE);
actuals = new Object[1];
SINGLETON_SEQUENCE.toArray(0, 1, actuals, 0);
Assert.assertArrayEquals(new Object[] {1}, actuals);
assertEquals(SINGLETON_SEQUENCE, 1);
actuals = new Object[3];
THREE_ELEMENTS.toArray(0, 3, actuals, 0);
Assert.assertArrayEquals(new Object[] {1, 2, 3}, actuals);
assertEquals(THREE_ELEMENTS, 1, 2, 3);
// source-offset
actuals = new Object[2];
THREE_ELEMENTS.toArray(0, 2, actuals, 0);
Assert.assertArrayEquals(new Object[] {1, 2}, actuals);
assertEquals(THREE_ELEMENTS, 1, 2, 3);
THREE_ELEMENTS.toArray(1, 2, actuals, 0);
Assert.assertArrayEquals(new Object[] {2, 3}, actuals);
assertEquals(THREE_ELEMENTS, 1, 2, 3);
actuals = new Object[2];
/*try {
THREE_ELEMENTS.toArray(-1, 2, actuals, 0);
fail("Expected ArrayIndexOutOfBoundsException");
} catch (ArrayIndexOutOfBoundsException ex) {
// ok
} catch (Exception ex) {
fail("Unexpected exception: " + ex.toString());
}
assertEquals(THREE_ELEMENTS, 1, 2, 3);
try {
THREE_ELEMENTS.toArray(2, 2, actuals, 0);
fail("Expected ArrayIndexOutOfBoundsException");
} catch (ArrayIndexOutOfBoundsException ex) {
// ok
} catch (Exception ex) {
fail("Unexpected exception: " + ex.toString());
}
*/
assertEquals(THREE_ELEMENTS, 1, 2, 3);
actuals = new Object[0];
THREE_ELEMENTS.toArray(3, 0, actuals, 0);
Assert.assertArrayEquals(new Object[0], actuals);
assertEquals(THREE_ELEMENTS, 1, 2, 3);
// dest-offset
actuals = new Object[4];
actuals[0] = 2;
THREE_ELEMENTS.toArray(0, 3, actuals, 1);
Assert.assertArrayEquals(new Object[] {2, 1, 2, 3}, actuals);
assertEquals(THREE_ELEMENTS, 1, 2, 3);
actuals = new Object[3];
try {
THREE_ELEMENTS.toArray(0, 3, actuals, -1);
fail("Expected ArrayIndexOutOfBoundsException");
} catch (ArrayIndexOutOfBoundsException ex) {
// ok
} catch (Exception ex) {
fail("Unexpected exception: " + ex.toString());
}
try {
THREE_ELEMENTS.toArray(0, 3, actuals, 1);
fail("Expected ArrayIndexOutOfBoundsException");
} catch (ArrayIndexOutOfBoundsException ex) {
// ok
} catch (Exception ex) {
fail("Unexpected exception: " + ex.toString());
}
}
}