1 /*
   2  * Copyright (c) 2014, 2016, 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.Listeners;
  33 import org.testng.annotations.Test;
  34 import org.w3c.dom.Document;
  35 
  36 
  37 /*
  38  * @bug 4991857
  39  * @summary XPath.evaluate(...) throws XPathExpressionException when context is null and expression refers to the context.
  40  */
  41 @Listeners({jaxp.library.BasePolicy.class})
  42 public class Bug4991857 {
  43 
  44     Document d = null;
  45 
  46     XPathFactory xpathFactory = XPathFactory.newInstance();
  47 
  48     @Test
  49     public void testXPath09() throws Exception {
  50         try {
  51             XPath xpath = xpathFactory.newXPath();
  52             Assert.assertNotNull(xpath);
  53 
  54             Double result = (Double) xpath.evaluate("1+2", d, XPathConstants.NUMBER);
  55         } catch (XPathExpressionException unused) {
  56             Assert.fail("Unexpected XPathExpressionException thrown");
  57         }
  58     }
  59 
  60     @Test
  61     public void testXPath10() throws Exception {
  62         try {
  63             XPath xpath = xpathFactory.newXPath();
  64             Assert.assertNotNull(xpath);
  65 
  66             xpath.evaluate(".", d, XPathConstants.STRING);
  67             Assert.fail("XPathExpressionException not thrown");
  68         } catch (XPathExpressionException e) {
  69             // Expected exception as context node is null
  70         }
  71     }
  72 
  73     @Test
  74     public void testXPath11() throws Exception {
  75         try {
  76             Document d = null;
  77 
  78             XPathFactory xpathFactory = XPathFactory.newInstance();
  79             Assert.assertNotNull(xpathFactory);
  80 
  81             XPath xpath = xpathFactory.newXPath();
  82             Assert.assertNotNull(xpath);
  83 
  84             String quantity = (String) xpath.evaluate("/widgets/widget[@name='a']/@quantity", d, XPathConstants.STRING);
  85             Assert.fail("XPathExpressionException not thrown");
  86         } catch (XPathExpressionException e) {
  87             // Expected exception as context node is null
  88         }
  89     }
  90 }