    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.FunctionCallException;
    73  import org.jaxen.JaxenException;
    74  import org.jaxen.XPath;
    75  import org.jaxen.dom.DOMXPath;
    76  import org.w3c.dom.Document;
    77
    78  /***
    79   * @author Elliotte Rusty Harold
    80   *
    81   */
    82  public class StringTest 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 StringTest(String name) {
    96          super(name);
    97      }
    98
    99      // test case for JAXEN-55
    100     public void testStringFunctionOperatesOnFirstNodeInDocumentOrder()
    101       throws JaxenException {
    102
    103         XPath xpath = new DOMXPath("string(//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("2"));
    115         x3.appendChild(doc.createTextNode("3"));
    116         x4.appendChild(doc.createTextNode("4"));
    117
    118         List result = xpath.selectNodes(doc);
    119         assertEquals(1, result.size());
    120         assertEquals("2", result.get(0));
    121
    122     }
    123
    124     public void testStringValueOfComment()
    125       throws JaxenException {
    126
    127         XPath xpath = new DOMXPath("string(/a/comment())");
    128         org.w3c.dom.Element a = doc.createElementNS("", "a");
    129         doc.appendChild(a);
    130         a.appendChild(doc.createComment("data"));
    131
    132         String result = (String) xpath.evaluate(doc);
    133         assertEquals("data", result);
    134
    135     }
    136
    137     public void testStringValueOfNamespaceNode()
    138       throws JaxenException {
    139
    140         XPath xpath = new DOMXPath("string(/a/namespace::node())");
    141         org.w3c.dom.Element a = doc.createElementNS("", "a");
    142         doc.appendChild(a);
    143
    144         String result = (String) xpath.evaluate(doc);
    145         assertEquals("http://www.w3.org/XML/1998/namespace", result);
    146
    147     }
    148
    149     public void testSmallNumbersDontUseExponentialNotation() throws JaxenException {
    150         XPath xpath = new DOMXPath("string(0.0000003)");
    151         String result = (String) xpath.evaluate(null);
    152         assertEquals("0.0000003", result);
    153     }
    154
    155     public void testBigNumbersDontUseExponentialNotation() throws JaxenException {
    156         XPath xpath = new DOMXPath("string(100000000.5)");
    157         String result = (String) xpath.evaluate(null);
    158         assertEquals("100000000.5", result);
    159     }
    160
    161     public void testStringOfInfinity() throws JaxenException {
    162         XPath xpath = new DOMXPath("string(1 div 0)");
    163         String result = (String) xpath.evaluate(null);
    164         assertEquals("Infinity", result);
    165     }
    166
    167     public void testStringOfNegativeInfinity() throws JaxenException {
    168         XPath xpath = new DOMXPath("string(-1 div 0)");
    169         String result = (String) xpath.evaluate(null);
    170         assertEquals("-Infinity", result);
    171     }
    172
    173     public void testStringOfNegativeZero() throws JaxenException {
    174         XPath xpath = new DOMXPath("string(-0)");
    175         String result = (String) xpath.evaluate(null);
    176         assertEquals("0", result);
    177     }
    178
    179     public void testIntegersAreFormattedAsInts() throws JaxenException {
    180         XPath xpath = new DOMXPath("string(12)");
    181         String result = (String) xpath.evaluate(null);
    182         assertEquals("12", result);
    183     }
    184
    185     public void testStringFunctionRequiresAtMostOneArgument()
    186       throws JaxenException {
    187
    188         XPath xpath = new DOMXPath("string('a', 1)");
    189
    190         try {
    191             xpath.selectNodes(doc);
    192             fail("Allowed string function with two arguments");
    193         }
    194         catch (FunctionCallException ex) {
    195             assertNotNull(ex.getMessage());
    196         }
    197
    198     }
    199 }