ArrayListIteratorTests.java

/*******************************************************************************
 * 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.ListIterator;
import java.util.NoSuchElementException;

import junit.framework.Test;
import junit.framework.TestSuite;

import org.eclipse.persistence.tools.workbench.utility.iterators.ArrayListIterator;

public class ArrayListIteratorTests extends ArrayIteratorTests {

    public static Test suite() {
        return new TestSuite(ArrayListIteratorTests.class);
    }

    public ArrayListIteratorTests(String name) {
        super(name);
    }

    public void testHasPrevious() {
        ListIterator stream = this.buildListIterator();
        while (stream.hasNext()) {
            stream.next();
        }
        int i = 0;
        while (stream.hasPrevious()) {
            stream.previous();
            i++;
        }
        assertEquals(this.buildArray().length, i);
    }

    public void testPrevious() {
        ListIterator stream = this.buildListIterator();
        while (stream.hasNext()) {
            stream.next();
        }
        int i = this.buildArray().length;
        while (stream.hasPrevious()) {
            assertEquals("bogus element", i--, Integer.parseInt((String) stream.previous()));
        }
    }

    public void testNextIndex() {
        int i = 0;
        ListIterator stream = this.buildListIterator();
        while (stream.hasNext()) {
            assertEquals(i, stream.nextIndex());
            stream.next();
            i++;
        }
        assertEquals(i, stream.nextIndex());
    }

    public void testPreviousIndex() {
        int i = 0;
        ListIterator stream = this.buildListIterator();
        while (stream.hasNext()) {
            assertEquals(i - 1, stream.previousIndex());
            stream.next();
            i++;
        }
        assertEquals(i - 1, stream.previousIndex());
    }

    public void testNoSuchElementException() {
        boolean exCaught = false;
        ListIterator stream = this.buildListIterator();
        String string = null;
        try {
            string = (String) stream.previous();
        } catch (NoSuchElementException ex) {
            exCaught = true;
        }
        assertTrue("NoSuchElementException not thrown: " + string, exCaught);
    }

    public void testUnsupportedOperationExceptionAdd() {
        boolean exCaught = false;
        for (ListIterator stream = this.buildListIterator(); stream.hasNext(); ) {
            if (stream.next().equals("3")) {
                try {
                    stream.add("3.5");
                } catch (UnsupportedOperationException ex) {
                    exCaught = true;
                }
            }
        }
        assertTrue("UnsupportedOperationException not thrown", exCaught);
    }

    public void testUnsupportedOperationExceptionSet() {
        boolean exCaught = false;
        for (ListIterator stream = this.buildListIterator(); stream.hasNext(); ) {
            if (stream.next().equals("3")) {
                try {
                    stream.set("three");
                } catch (UnsupportedOperationException ex) {
                    exCaught = true;
                }
            }
        }
        assertTrue("UnsupportedOperationException not thrown", exCaught);
    }

    private ListIterator buildListIterator() {
        return this.buildListIterator(this.buildArray());
    }

    private ListIterator buildListIterator(Object[] array) {
        return new ArrayListIterator(array);
    }

    Iterator buildIterator(Object[] array) {
        return new ArrayListIterator(array);
    }

    Iterator buildIterator(Object[] array, int start, int length) {
        return new ArrayListIterator(array, start, length);
    }

}