    1   /*
    2    * $Header$
    3    * $Revision$
    4    * $Date$
    5    *
    6    * ====================================================================
    7    *
    8    * Copyright (C) 2005 Elliotte Rusty Harold.
    9    * All rights reserved.
    10   *
    11   * Redistribution and use in source and binary forms, with or without
    12   * modification, are permitted provided that the following conditions
    13   * are met:
    14   *
    15   * 1. Redistributions of source code must retain the above copyright
    16   *    notice, this list of conditions, and the following disclaimer.
    17   *
    18   * 2. Redistributions in binary form must reproduce the above copyright
    19   *    notice, this list of conditions, and the disclaimer that follows
    20   *    these conditions in the documentation and/or other materials
    21   *    provided with the distribution.
    22   *
    23   * 3. The name "Jaxen" must not be used to endorse or promote products
    24   *    derived from this software without prior written permission.  For
    25   *    written permission, please contact license@jaxen.org.
    26   *
    27   * 4. Products derived from this software may not be called "Jaxen", nor
    28   *    may "Jaxen" appear in their name, without prior written permission
    29   *    from the Jaxen Project Management (pm@jaxen.org).
    30   *
    31   * In addition, we request (but do not require) that you include in the
    32   * end-user documentation provided with the redistribution and/or in the
    33   * software itself an acknowledgement equivalent to the following:
    34   *     "This product includes software developed by the
    35   *      Jaxen Project (http://www.jaxen.org/)."
    36   * Alternatively, the acknowledgment may be graphical using the logos
    37   * available at http://www.jaxen.org/
    38   *
    39   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
    40   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
    41   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    42   * DISCLAIMED.  IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT
    43   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    44   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    45   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
    46   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    47   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    48   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
    49   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    50   * SUCH DAMAGE.
    51   *
    52   * ====================================================================
    53   * This software consists of voluntary contributions made by many
    54   * individuals on behalf of the Jaxen Project and was originally
    55   * created by bob mcwhirter <bob@werken.com> and
    56   * James Strachan <jstrachan@apache.org>.  For more information on the
    57   * Jaxen Project, please see <http://www.jaxen.org/>.
    58   *
    59   * $Id$
    60   */
    61
    62  package org.jaxen.function;
    63
    64  import java.util.List;
    65
    66  import javax.xml.parsers.DocumentBuilder;
    67  import javax.xml.parsers.DocumentBuilderFactory;
    68  import javax.xml.parsers.ParserConfigurationException;
    69
    70  import junit.framework.TestCase;
    71
    72  import org.jaxen.BaseXPath;
    73  import org.jaxen.FunctionCallException;
    74  import org.jaxen.JaxenException;
    75  import org.jaxen.dom.DOMXPath;
    76  import org.w3c.dom.Document;
    77
    78  /***
    79   * @author Elliotte Rusty Harold
    80   *
    81   */
    82  public class BooleanTest extends TestCase {
    83
    84      private Document doc;
    85
    86      public void setUp() throws ParserConfigurationException
    87      {
    88          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    89          factory.setNamespaceAware(true);
    90          DocumentBuilder builder = factory.newDocumentBuilder();
    91          doc = builder.newDocument();
    92      }
    93
    94
    95      public BooleanTest(String name) {
    96          super(name);
    97      }
    98
    99      // test case for JAXEN-55
    100     public void testNonEmptyNodeSetsAreTrue()
    101       throws JaxenException {
    102
    103         BaseXPath xpath = new DOMXPath("boolean(//x)");
    104         org.w3c.dom.Element a = doc.createElementNS("", "a");
    105         org.w3c.dom.Element b = doc.createElementNS("", "b");
    106         doc.appendChild(a);
    107         a.appendChild(b);
    108         org.w3c.dom.Element x2 = doc.createElementNS("", "x");
    109         org.w3c.dom.Element x3 = doc.createElementNS("", "x");
    110         org.w3c.dom.Element x4 = doc.createElementNS("", "x");
    111         a.appendChild(x4);
    112         b.appendChild(x2);
    113         b.appendChild(x3);
    114         x2.appendChild(doc.createTextNode("false"));
    115         x3.appendChild(doc.createTextNode("false"));
    116         x4.appendChild(doc.createTextNode("false"));
    117
    118         List result = xpath.selectNodes(doc);
    119         assertEquals(1, result.size());
    120         assertEquals(Boolean.TRUE, result.get(0));
    121
    122     }
    123
    124     public void testEmptyNodeSetsAreFalse()
    125       throws JaxenException {
    126
    127         BaseXPath xpath = new DOMXPath("boolean(//y)");
    128         org.w3c.dom.Element a = doc.createElementNS("", "a");
    129         org.w3c.dom.Element b = doc.createElementNS("", "b");
    130         doc.appendChild(a);
    131         a.appendChild(b);
    132         org.w3c.dom.Element x2 = doc.createElementNS("", "x");
    133         org.w3c.dom.Element x3 = doc.createElementNS("", "x");
    134         org.w3c.dom.Element x4 = doc.createElementNS("", "x");
    135         a.appendChild(x4);
    136         b.appendChild(x2);
    137         b.appendChild(x3);
    138         x2.appendChild(doc.createTextNode("false"));
    139         x3.appendChild(doc.createTextNode("false"));
    140         x4.appendChild(doc.createTextNode("false"));
    141
    142         List result = xpath.selectNodes(doc);
    143         assertEquals(1, result.size());
    144         assertEquals(Boolean.FALSE, result.get(0));
    145
    146     }
    147
    148     public void testZeroIsFalse()
    149       throws JaxenException {
    150
    151         BaseXPath xpath = new DOMXPath("boolean(0)");
    152         org.w3c.dom.Element a = doc.createElementNS("", "a");
    153
    154         List result = xpath.selectNodes(a);
    155         assertEquals(1, result.size());
    156         assertEquals(Boolean.FALSE, result.get(0));
    157
    158     }
    159
    160     public void testEmptyStringIsFalse()
    161       throws JaxenException {
    162
    163         BaseXPath xpath = new DOMXPath("boolean('')");
    164         org.w3c.dom.Element a = doc.createElementNS("", "a");
    165
    166         List result = xpath.selectNodes(a);
    167         assertEquals(1, result.size());
    168         assertEquals(Boolean.FALSE, result.get(0));
    169
    170     }
    171
    172     public void testNaNIsFalse()
    173       throws JaxenException {
    174
    175         BaseXPath xpath = new DOMXPath("boolean(0 div 0)");
    176         Object result = xpath.evaluate(null);
    177         assertEquals(Boolean.FALSE, result);
    178
    179     }
    180
    181     public void testNonEmptyStringIsTrue()
    182       throws JaxenException {
    183
    184         BaseXPath xpath = new DOMXPath("boolean('false')");
    185         org.w3c.dom.Element a = doc.createElementNS("", "a");
    186
    187         List result = xpath.selectNodes(a);
    188         assertEquals(1, result.size());
    189         assertEquals(Boolean.TRUE, result.get(0));
    190
    191     }
    192
    193     public void testBooleanFunctionRequiresOneArgument()
    194       throws JaxenException {
    195
    196         BaseXPath xpath = new DOMXPath("boolean()");
    197         org.w3c.dom.Element a = doc.createElementNS("", "a");
    198
    199         try {
    200             xpath.selectNodes(a);
    201             fail("Allowed boolean function with no arguments");
    202         }
    203         catch (FunctionCallException ex) {
    204             assertNotNull(ex.getMessage());
    205         }
    206
    207     }
    208
    209     public void testBooleanFunctionRequiresExactlyOneArgument()
    210       throws JaxenException {
    211
    212         BaseXPath xpath = new DOMXPath("boolean('', '')");
    213         org.w3c.dom.Element a = doc.createElementNS("", "a");
    214
    215         try {
    216             xpath.selectNodes(a);
    217             fail("Allowed boolean function with two arguments");
    218         }
    219         catch (FunctionCallException ex) {
    220             assertNotNull(ex.getMessage());
    221         }
    222
    223     }
    224
    225 }