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
31import java.util.Arrays;
32import java.util.Iterator;
33import java.util.NoSuchElementException;
34import java.util.stream.IntStream;
35
36import org.testng.annotations.Test;
37import org.testng.annotations.DataProvider;
38import static org.testng.Assert.assertSame;
39import static org.testng.Assert.assertTrue;
40import static org.testng.Assert.assertFalse;
41import static org.testng.Assert.fail;
42
43public 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                fail("Remove must throw");
57            } catch (UnsupportedOperationException ex) {
58                // expected
59            }
60        }
61        assertFalse(itr.hasNext());
62        for (int i = 0; i < 3; i++) {
63            assertFalse(itr.hasNext());
64            try {
65                itr.next();
66                fail("Next succeed when there's no data left");
67            } catch (NoSuchElementException ex) {
68                // expected
69            }
70        }
71    }
72
73    @DataProvider(name = "Arrays")
74    public static Object[][] arrays() {
75        Object[][] arrays = {
76            { new Object[] { } },
77            { new Object[] { 1 } },
78            { new Object[] { null } },
79            { new Object[] { null, 1 } },
80            { new Object[] { 1, null } },
81            { new Object[] { null, null } },
82            { new Object[] { null, 1, 2 } },
83            { new Object[] { 1, null, 2 } },
84            { new Object[] { 1, 2, null } },
85            { new Object[] { null, null, null } },
86            { new Object[] { 1, 2, 3, null, 4 } },
87            { new Object[] { "a", "a", "a", "a" } },
88            { IntStream.range(0, 100).boxed().toArray() }
89        };
90
91        return arrays;
92    }
93}
94