1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5  * This code is free software; you can redistribute it and/or modify it
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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).
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23 
24 /**
25  * @test
26  * @bug 8155600
27  * @summary Tests for Arrays.asList()
28  * @run testng AsList
29  */
30 
31 package test.java.util.Arrays;
32 
33 import java.util.Arrays;
34 import java.util.Iterator;
35 import java.util.NoSuchElementException;
36 import java.util.stream.IntStream;
37 
38 import org.testng.annotations.Test;
39 import org.testng.annotations.DataProvider;
40 import static org.testng.Assert.assertSame;
41 import static org.testng.Assert.assertTrue;
42 import static org.testng.Assert.assertFalse;
43 import static org.testng.Assert.fail;
44 
45 public class AsList {
46     /*
47      * Iterator contract test
48      */
49     @Test(dataProvider = "Arrays")
testIterator(Object[] array)50     public void testIterator(Object[] array) {
51         Iterator<Object> itr = Arrays.asList(array).iterator();
52         for (int i = 0; i < array.length; i++) {
53             assertTrue(itr.hasNext());
54             assertTrue(itr.hasNext()); // must be idempotent
55             assertSame(array[i], itr.next());
56             try {
57                 itr.remove();
58                 fail("Remove must throw");
59             } catch (UnsupportedOperationException ex) {
60                 // expected
61             }
62         }
63         assertFalse(itr.hasNext());
64         for (int i = 0; i < 3; i++) {
65             assertFalse(itr.hasNext());
66             try {
67                 itr.next();
68                 fail("Next succeed when there's no data left");
69             } catch (NoSuchElementException ex) {
70                 // expected
71             }
72         }
73     }
74 
75     @DataProvider(name = "Arrays")
arrays()76     public static Object[][] arrays() {
77         Object[][] arrays = {
78             { new Object[] { } },
79             { new Object[] { 1 } },
80             { new Object[] { null } },
81             { new Object[] { null, 1 } },
82             { new Object[] { 1, null } },
83             { new Object[] { null, null } },
84             { new Object[] { null, 1, 2 } },
85             { new Object[] { 1, null, 2 } },
86             { new Object[] { 1, 2, null } },
87             { new Object[] { null, null, null } },
88             { new Object[] { 1, 2, 3, null, 4 } },
89             { new Object[] { "a", "a", "a", "a" } },
90             { IntStream.range(0, 100).boxed().toArray() }
91         };
92 
93         return arrays;
94     }
95 }
96