    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 javax.xml.parsers.DocumentBuilder;
    65  import javax.xml.parsers.DocumentBuilderFactory;
    66  import javax.xml.parsers.ParserConfigurationException;
    67
    68  import junit.framework.TestCase;
    69
    70  import org.jaxen.FunctionCallException;
    71  import org.jaxen.JaxenException;
    72  import org.jaxen.XPath;
    73  import org.jaxen.dom.DOMXPath;
    74  import org.w3c.dom.Document;
    75
    76  /***
    77   * @author Elliotte Rusty Harold
    78   *
    79   */
    80  public class SubstringTest extends TestCase {
    81
    82      private Document doc;
    83
    84      public void setUp() throws ParserConfigurationException
    85      {
    86          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    87          factory.setNamespaceAware(true);
    88          DocumentBuilder builder = factory.newDocumentBuilder();
    89          doc = builder.newDocument();
    90          doc.appendChild(doc.createElement("root"));
    91      }
    92
    93
    94      public SubstringTest(String name) {
    95          super(name);
    96      }
    97
    98      public void testSubstringOfNumber() throws JaxenException
    99      {
    100         XPath xpath = new DOMXPath( "substring(1234, 3)" );
    101         String result = (String) xpath.evaluate( doc );
    102         assertEquals("34", result);
    103     }
    104
    105     public void testSubstringOfNumber2() throws JaxenException
    106     {
    107         XPath xpath = new DOMXPath( "substring(1234, 2, 3)" );
    108         String result = (String) xpath.evaluate( doc );
    109         assertEquals("234", result);
    110     }
    111
    112     // Unusual tests from XPath spec
    113
    114     public void testUnusualSubstring1() throws JaxenException
    115     {
    116         XPath xpath = new DOMXPath( "substring('12345', 1.5, 2.6)" );
    117         String result = (String) xpath.evaluate( doc );
    118         assertEquals("234", result);
    119     }
    120
    121
    122     public void testUnusualSubstring2() throws JaxenException
    123     {
    124         XPath xpath = new DOMXPath( "substring('12345', 0, 3)" );
    125         String result = (String) xpath.evaluate( doc );
    126         assertEquals("12", result);
    127     }
    128
    129
    130     public void testUnusualSubstring3() throws JaxenException
    131     {
    132         XPath xpath = new DOMXPath( "substring('12345', 0 div 0, 3)" );
    133         String result = (String) xpath.evaluate( doc );
    134         assertEquals("", result);
    135     }
    136
    137     public void testUnusualSubstring4() throws JaxenException
    138     {
    139         XPath xpath = new DOMXPath( "substring('12345', 1, 0 div 0)" );
    140         String result = (String) xpath.evaluate( doc );
    141         assertEquals("", result);
    142     }
    143
    144     public void testUnusualSubstring5() throws JaxenException
    145     {
    146         XPath xpath = new DOMXPath( "substring('12345', -42, 1 div 0)" );
    147         String result = (String) xpath.evaluate( doc );
    148         assertEquals("12345", result);
    149     }
    150
    151     public void testUnusualSubstring6() throws JaxenException
    152     {
    153         XPath xpath = new DOMXPath( "substring('12345', -1 div 0, 1 div 0)" );
    154         String result = (String) xpath.evaluate( doc );
    155         assertEquals("", result);
    156     }
    157
    158
    159     public void testSubstringOfNaN() throws JaxenException
    160     {
    161         XPath xpath = new DOMXPath( "substring(0 div 0, 2)" );
    162         String result = (String) xpath.evaluate( doc );
    163         assertEquals("aN", result);
    164     }
    165
    166
    167     public void testSubstringOfEmptyString() throws JaxenException
    168     {
    169         XPath xpath = new DOMXPath( "substring('', 2)" );
    170         String result = (String) xpath.evaluate( doc );
    171         assertEquals("", result);
    172     }
    173
    174
    175     public void testSubstringWithNegativeLength() throws JaxenException
    176     {
    177         XPath xpath = new DOMXPath( "substring('12345', 2, -3)" );
    178         String result = (String) xpath.evaluate( doc );
    179         assertEquals("", result);
    180     }
    181
    182
    183     public void testSubstringWithExcessiveLength() throws JaxenException
    184     {
    185         XPath xpath = new DOMXPath( "substring('12345', 2, 32)" );
    186         String result = (String) xpath.evaluate( doc );
    187         assertEquals("2345", result);
    188     }
    189
    190
    191     public void testSubstringWithNegativeLength2() throws JaxenException
    192     {
    193         XPath xpath = new DOMXPath( "substring('12345', 2, -1)" );
    194         String result = (String) xpath.evaluate( doc );
    195         assertEquals("", result);
    196     }
    197
    198
    199     public void testSubstringFunctionRequiresAtLeastTwoArguments()
    200       throws JaxenException {
    201
    202         XPath xpath = new DOMXPath("substring('a')");
    203
    204         try {
    205             xpath.selectNodes(doc);
    206             fail("Allowed substring function with one argument");
    207         }
    208         catch (FunctionCallException ex) {
    209             assertNotNull(ex.getMessage());
    210         }
    211
    212     }
    213
    214     public void testNegativeStartNoLength()
    215       throws JaxenException {
    216
    217         XPath xpath = new DOMXPath("substring('Hello', -50)");
    218         String result = (String) xpath.evaluate( doc );
    219         assertEquals("Hello", result);
    220
    221     }
    222
    223     public void testNegativeStartWithLength()
    224       throws JaxenException {
    225
    226         XPath xpath = new DOMXPath("substring('Hello', -50, 20)");
    227         String result = (String) xpath.evaluate( doc );
    228         assertEquals("", result);
    229
    230     }
    231
    232     public void testSubstringFunctionRequiresAtMostThreeArguments()
    233       throws JaxenException {
    234
    235         XPath xpath = new DOMXPath("substring('a', 1, 1, 4)");
    236
    237         try {
    238             xpath.selectNodes(doc);
    239             fail("Allowed substring function with four arguments");
    240         }
    241         catch (FunctionCallException ex) {
    242             assertNotNull(ex.getMessage());
    243         }
    244
    245     }
    246
    247     public void testStringLengthCountsUnicodeCharactersNotJavaChars()
    248       throws JaxenException {
    249
    250         XPath xpath = new DOMXPath("substring('A\uD834\uDD00', 1, 2)");
    251         String result = (String) xpath.evaluate( doc );
    252         assertEquals("A\uD834\uDD00", result);
    253
    254     }
    255
    256
    257     public void testStringLengthIndexesUnicodeCharactersNotJavaChars()
    258       throws JaxenException {
    259
    260         XPath xpath = new DOMXPath("substring('A\uD834\uDD00', 3, 1)");
    261         String result = (String) xpath.evaluate( doc );
    262         assertEquals("", result);
    263
    264     }
    265
    266
    267     public void testStringLengthIndexesAndCountsUnicodeCharactersNotJavaChars()
    268       throws JaxenException {
    269
    270         XPath xpath = new DOMXPath("substring('A\uD834\uDD00123', 3, 2)");
    271         String result = (String) xpath.evaluate( doc );
    272         assertEquals("12", result);
    273
    274     }
    275
    276
    277 }