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 parsers;
  25 
  26 import java.io.StringReader;
  27 
  28 import javax.xml.parsers.SAXParser;
  29 import javax.xml.parsers.SAXParserFactory;
  30 
  31 import org.testng.Assert;
  32 import org.testng.annotations.Listeners;
  33 import org.testng.annotations.Test;
  34 import org.xml.sax.InputSource;
  35 import org.xml.sax.helpers.DefaultHandler;
  36 
  37 /*
  38  * @summary Test SAXParser doesn't accept empty stream.
  39  */
  40 @Listeners({jaxp.library.BasePolicy.class})
  41 public class ParseEmptyStream {
  42 
  43     SAXParserFactory factory = null;
  44 
  45     public ParseEmptyStream(String name) {
  46         try {
  47             factory = SAXParserFactory.newInstance();
  48             factory.setNamespaceAware(true);
  49         } catch (Exception ex) {
  50             Assert.fail(ex.getMessage());
  51         }
  52     }
  53 
  54     @Test
  55     public void testEmptyStream() {
  56         try {
  57             SAXParser parser = factory.newSAXParser();
  58             InputSource source = new InputSource(new StringReader(""));
  59             parser.parse(source, new MyHandler());
  60             Assert.fail("Inputstream without document element accepted");
  61         } catch (Exception ex) {
  62             System.out.println("Exception thrown: " + ex.getMessage());
  63             // Premature end of file exception expected
  64         }
  65     }
  66 
  67     @Test
  68     public void testXmlDeclOnly() {
  69         try {
  70             SAXParser parser = factory.newSAXParser();
  71             InputSource source = new InputSource(new StringReader("<?xml version='1.0' encoding='utf-8'?>"));
  72             parser.parse(source, new MyHandler());
  73             Assert.fail("Inputstream without document element accepted");
  74         } catch (Exception ex) {
  75             System.out.println("Exception thrown: " + ex.getMessage());
  76             // Premature end of file exception expected
  77         }
  78     }
  79 
  80     static class MyHandler extends DefaultHandler {
  81         public void startDocument() {
  82             System.out.println("Start document called");
  83         }
  84 
  85         public void endDocument() {
  86             System.out.println("End document called");
  87         }
  88     }
  89 
  90 }