1 /*
   2  * Copyright (c) 2014, 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 javax.xml.xpath.ptests;
  25 
  26 import static org.testng.Assert.assertEquals;
  27 
  28 import javax.xml.testutils.TestBase;
  29 import javax.xml.xpath.XPath;
  30 import javax.xml.xpath.XPathExpressionException;
  31 import javax.xml.xpath.XPathFactory;
  32 import javax.xml.xpath.XPathFunctionResolver;
  33 
  34 import org.testng.annotations.Test;
  35 
  36 /**
  37  * Class containing the test cases for XPathFunctionResolver.
  38  */
  39 public class XPathFunctionResolver01 extends TestBase {
  40 
  41     /**
  42      * Test for resolveFunction(QName functionName,int arity). If functionName
  43      * or arity is null, then a NullPointerException is thrown.
  44      * 
  45      */
  46     @Test
  47     public void testCheckXPathFunctionResolver01() {
  48         try {
  49             XPathFactory xpathFactory = XPathFactory.newInstance();
  50             XPath xpath = xpathFactory.newXPath();
  51             XPathFunctionResolver xpathFunctionResolver = xpath.getXPathFunctionResolver();
  52             if (xpathFunctionResolver == null) {
  53                 System.out.println("xpathFunctionResolver is null , so creating and setting new MyXPathFunctionResolver ");
  54                 xpath.setXPathFunctionResolver((q, i) -> {
  55                     return null;
  56                 });
  57             }
  58             String result = xpath.evaluate("round(1.7)", (Object) null);
  59             assertEquals(result, "2");
  60         } catch (XPathExpressionException e) {
  61             fail(e);
  62         }
  63     }
  64 }