1 /*
   2  * Copyright (c) 2020, 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 /*
  25  * @test
  26  * @bug     8161558
  27  * @summary ListIterator should not discard cause on exception
  28  * @run testng CheckForIndexOutOfBoundsException
  29  */
  30 
  31 import java.util.List;
  32 import java.util.AbstractList;
  33 import java.util.Iterator;
  34 import java.util.ListIterator;
  35 import java.util.NoSuchElementException;
  36 
  37 import org.testng.annotations.Test;
  38 
  39 import static org.testng.Assert.assertNotNull;
  40 import static org.testng.Assert.assertTrue;
  41 import static org.testng.Assert.fail;
  42 
  43 // Fixed size list containing two elements
  44 
  45 class MyList extends AbstractList<String> {
  46 
  47     private static final int SIZE = 2;
  48 
  49     public String get(int i) {
  50         if (i >= 0 && i < SIZE) {
  51             return "x";
  52         } else {
  53             throw new IndexOutOfBoundsException();
  54         }
  55     }
  56 
  57     public int size() {
  58         return SIZE;
  59     }
  60 }
  61 
  62 @Test
  63 public class CheckForIndexOutOfBoundsException {
  64 
  65     List<String> list = new MyList();
  66 
  67 
  68     @Test
  69     public void checkIteratorNext() {
  70         var iterator = list.iterator(); // position at start
  71         try {
  72             for (int i = 0; i <= list.size(); i++) {
  73                 iterator.next();
  74             }
  75             fail("Failing checkIteratorNext() - NoSuchElementException should have been thrown");
  76         } catch (NoSuchElementException e) {
  77             checkAssertOnException(e);
  78         }
  79     }
  80 
  81     @Test
  82     public void checkListIteratorNext() {
  83         var iterator = list.listIterator(list.size()); // position at end
  84         try {
  85             iterator.next();
  86             fail("Failing checkListIteratorNext() - NoSuchElementException should have been thrown");
  87         } catch (NoSuchElementException e) {
  88             checkAssertOnException(e);
  89         }
  90     }
  91 
  92     @Test
  93     public void checkListIteratorPrevious() {
  94         var iterator = list.listIterator(0); // position at start
  95         try {
  96             iterator.previous();
  97             fail("Failing checkListIteratorPrevious() - NoSuchElementException should have been thrown");
  98         } catch (NoSuchElementException e) {
  99             checkAssertOnException(e);
 100         }
 101     }
 102 
 103     private void checkAssertOnException(NoSuchElementException e) {
 104         var cause = e.getCause();
 105         assertNotNull(cause, "Exception.getCause()");
 106         assertTrue(cause instanceof IndexOutOfBoundsException, "Exception.getCause() should be an " +
 107                 "IndexOutOfBoundsException");
 108         var msg = e.getMessage();
 109         assertNotNull(msg, "Exception.getMessage()");
 110         assertTrue(msg.contains("IndexOutOfBoundsException"), "Exception.getMessage() should " +
 111                 "contain the string 'IndexOutOfBoundsException'");
 112     }
 113 }
 114