1 /*
   2  * Copyright (c) 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 /**
  25  * @test
  26  * @bug 8155600
  27  * @summary Tests for Arrays.asList()
  28  * @run testng AsList
  29  */
  30 
  31 import java.util.Arrays;
  32 import java.util.Iterator;
  33 import java.util.NoSuchElementException;
  34 import java.util.stream.IntStream;
  35 
  36 import org.testng.annotations.Test;
  37 import org.testng.annotations.DataProvider;
  38 import static org.testng.Assert.assertSame;
  39 import static org.testng.Assert.assertTrue;
  40 import static org.testng.Assert.assertFalse;
  41 import static org.testng.Assert.fail;
  42 
  43 public class AsList {
  44     /*
  45      * Iterator contract test
  46      */
  47     @Test(dataProvider = "Arrays")
  48     public void testIterator(Object[] array) {
  49         Iterator<Object> itr = Arrays.asList(array).iterator();
  50         for (int i=0; i<array.length; i++) {
  51             assertTrue(itr.hasNext());
  52             assertTrue(itr.hasNext()); // must be idempotent
  53             assertSame(array[i], itr.next());
  54             try {
  55                 itr.remove();
  56             }
  57             catch (UnsupportedOperationException ex) {
  58                 continue;
  59             }
  60             fail("Remove must throw");
  61         }
  62         assertFalse(itr.hasNext());
  63         for (int i=0; i<3; i++) {
  64             assertFalse(itr.hasNext());
  65             try {
  66                 itr.next();
  67             }
  68             catch (NoSuchElementException ex) {
  69                 continue;
  70             }
  71             fail("Next succeed when there's no data left");
  72         }
  73     }
  74 
  75     @DataProvider(name = "Arrays", parallel = true)
  76     public static Object[][] arrays() {
  77         Object[][] arrays = {
  78             {new Object[] {}},
  79             {new Object[] {1}},
  80             {new Object[] {1, 2, 3, null, 4}},
  81             {new Object[] {"a", "a", "a", "a"}},
  82             {IntStream.range(0, 100).boxed().toArray()}
  83         };
  84 
  85         return arrays;
  86     }
  87 }