/*
 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
 *
 * This software is open source.
 * See the bottom of this file for the licence.
 */

package org.dom4j;

import junit.textui.TestRunner;

/**
 * Tests the use of null attribute values
 * 
 * @author <a href="mailto:jstrachan@apache.org">James Strachan </a>
 * @version $Revision: 1.3 $
 */
public class NullAttributesTest extends AbstractTestCase {
    protected DocumentFactory factory = DocumentFactory.getInstance();

    protected Document document = factory.createDocument();

    protected Element element = document.addElement("root");

    public static void main(String[] args) {
        TestRunner.run(NullAttributesTest.class);
    }

    // Test case(s)
    // -------------------------------------------------------------------------
    public void testStringNames() throws Exception {
        element.addAttribute("foo", null);

        Attribute attribute = element.attribute("foo");
        assertTrue(attribute == null);

        element.addAttribute("foo", "123");
        attribute = element.attribute("foo");
        assertTrue(attribute != null);

        element.addAttribute("foo", null);
        attribute = element.attribute("foo");
        assertTrue(attribute == null);
    }

    public void testQNames() throws Exception {
        QName bar = QName.get("bar");

        element.addAttribute(bar, null);

        Attribute attribute = element.attribute(bar);
        assertTrue(attribute == null);

        element.addAttribute(bar, "123");
        attribute = element.attribute(bar);
        assertTrue(attribute != null);

        element.addAttribute(bar, null);
        attribute = element.attribute(bar);
        assertTrue(attribute == null);
    }

    public void testAttributes() throws Exception {
        Attribute attribute = factory.createAttribute(element, "v", null);

        assertTrue(attribute.getText() == null);
        assertTrue(attribute.getValue() == null);

        element.add(attribute);
        attribute = element.attribute("v");
        assertTrue(attribute == null);

        attribute = factory.createAttribute(element, "v", "123");
        element.add(attribute);
        attribute = element.attribute("v");
        assertTrue(attribute != null);

        attribute = factory.createAttribute(element, "v", null);
        element.add(attribute);
        attribute = element.attribute("v");
        assertTrue(attribute == null);
    }
}

/*
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided that the
 * following conditions are met:
 * 
 * 1. Redistributions of source code must retain copyright statements and
 * notices. Redistributions must also contain a copy of this document.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 
 * 3. The name "DOM4J" must not be used to endorse or promote products derived
 * from this Software without prior written permission of MetaStuff, Ltd. For
 * written permission, please contact dom4j-info@metastuff.com.
 * 
 * 4. Products derived from this Software may not be called "DOM4J" nor may
 * "DOM4J" appear in their names without prior written permission of MetaStuff,
 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
 * 
 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
 * 
 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
 */
