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 dom; 25 26 import java.io.ByteArrayInputStream; 27 28 import javax.xml.parsers.DocumentBuilder; 29 import javax.xml.parsers.DocumentBuilderFactory; 30 import javax.xml.xpath.XPath; 31 import javax.xml.xpath.XPathConstants; 32 import javax.xml.xpath.XPathExpression; 33 import javax.xml.xpath.XPathFactory; 34 35 import org.testng.Assert; 36 import org.testng.annotations.Listeners; 37 import org.testng.annotations.Test; 38 import org.w3c.dom.Document; 39 import org.w3c.dom.NodeList; 40 41 /* 42 * @bug 6333993 43 * @summary Test NodeList.item(valid index) returns value after NodeList.item(NodeList.getLength()). 44 */ 45 @Listeners({jaxp.library.BasePolicy.class}) 46 public class CR6333993Test { 47 48 @Test 49 public void testNodeList() { 50 int n = 5; 51 while (0 != (n--)) 52 ; 53 System.out.println("n=" + n); 54 try { 55 String testXML = "<root>" + " <node/>" + " <node/>" + " <node/>" + " <node/>" + "</root>\n"; 56 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 57 // dbf.setNamespaceAware(true); 58 DocumentBuilder builder = dbf.newDocumentBuilder(); 59 ByteArrayInputStream bis = new ByteArrayInputStream(testXML.getBytes()); 60 Document testDoc = builder.parse(bis); 61 XPathFactory xpathFactory = XPathFactory.newInstance(); 62 XPath xpath = xpathFactory.newXPath(); 63 XPathExpression expr = xpath.compile("/root/node"); 64 NodeList testNodes = (NodeList) expr.evaluate(testDoc, XPathConstants.NODESET); 65 // Node list appears to work correctly 66 System.out.println("testNodes.getLength() = " + testNodes.getLength()); 67 System.out.println("testNodes[0] = " + testNodes.item(0)); 68 System.out.println("testNodes[0] = " + testNodes.item(0)); 69 System.out.println("testNodes.getLength() = " + testNodes.getLength()); 70 // Access past the end of the NodeList correctly returns null 71 System.out.println("testNodes[testNodes.getLength()] = " + testNodes.item(testNodes.getLength())); 72 // BUG! First access of valid node after accessing past the end 73 // incorrectly returns null 74 if (testNodes.item(0) == null) { 75 System.out.println("testNodes[0] = null"); 76 Assert.fail("First access of valid node after accessing past the end incorrectly returns null"); 77 } 78 // Subsequent access of valid node correctly returns the node 79 System.out.println("testNodes[0] = " + testNodes.item(0)); 80 } catch (Exception ex) { 81 ex.printStackTrace(); 82 } 83 84 } 85 86 }