1 /*
   2  * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package xpath;
  25 
  26 import javax.xml.xpath.XPath;
  27 import javax.xml.xpath.XPathConstants;
  28 import javax.xml.xpath.XPathExpressionException;
  29 import javax.xml.xpath.XPathFactory;
  30 
  31 import org.testng.Assert;
  32 import org.testng.annotations.Test;
  33 import org.w3c.dom.Document;
  34 
  35 
  36 /*
  37  * @bug 4991857
  38  * @summary XPath.evaluate(...) throws XPathExpressionException when context is null and expression refers to the context.
  39  */
  40 public class Bug4991857 {
  41 
  42     Document d = null;
  43 
  44     XPathFactory xpathFactory = XPathFactory.newInstance();
  45 
  46     @Test
  47     public void testXPath09() throws Exception {
  48         try {
  49             XPath xpath = xpathFactory.newXPath();
  50             Assert.assertNotNull(xpath);
  51 
  52             Double result = (Double) xpath.evaluate("1+2", d, XPathConstants.NUMBER);
  53         } catch (XPathExpressionException unused) {
  54             Assert.fail("Unexpected XPathExpressionException thrown");
  55         }
  56     }
  57 
  58     @Test
  59     public void testXPath10() throws Exception {
  60         try {
  61             XPath xpath = xpathFactory.newXPath();
  62             Assert.assertNotNull(xpath);
  63 
  64             xpath.evaluate(".", d, XPathConstants.STRING);
  65             Assert.fail("XPathExpressionException not thrown");
  66         } catch (XPathExpressionException e) {
  67             // Expected exception as context node is null
  68         }
  69     }
  70 
  71     @Test
  72     public void testXPath11() throws Exception {
  73         try {
  74             Document d = null;
  75 
  76             XPathFactory xpathFactory = XPathFactory.newInstance();
  77             Assert.assertNotNull(xpathFactory);
  78 
  79             XPath xpath = xpathFactory.newXPath();
  80             Assert.assertNotNull(xpath);
  81 
  82             String quantity = (String) xpath.evaluate("/widgets/widget[@name='a']/@quantity", d, XPathConstants.STRING);
  83             Assert.fail("XPathExpressionException not thrown");
  84         } catch (XPathExpressionException e) {
  85             // Expected exception as context node is null
  86         }
  87     }
  88 }