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17 package org.apache.commons.collections4;
18
19 import static org.junit.jupiter.api.Assertions.assertEquals;
20 import static org.junit.jupiter.api.Assertions.assertFalse;
21 import static org.junit.jupiter.api.Assertions.assertTrue;
22
23 import org.junit.jupiter.api.Test;
24
25 public class ArrayUtilsTest {
26
27 @Test
28 public void testContains() {
29 final Object[] array = { "0", "1", "2", "3", null, "0" };
30 assertFalse(ArrayUtils.contains(null, null));
31 assertFalse(ArrayUtils.contains(null, "1"));
32 assertTrue(ArrayUtils.contains(array, "0"));
33 assertTrue(ArrayUtils.contains(array, "1"));
34 assertTrue(ArrayUtils.contains(array, "2"));
35 assertTrue(ArrayUtils.contains(array, "3"));
36 assertTrue(ArrayUtils.contains(array, null));
37 assertFalse(ArrayUtils.contains(array, "notInArray"));
38 }
39
40 @Test
41 public void testContains_LANG_1261() {
42 class LANG1261ParentObject {
43 @Override
44 public boolean equals(final Object o) {
45 return true;
46 }
47 }
48 class LANG1261ChildObject extends LANG1261ParentObject {
49 }
50 final Object[] array = new LANG1261ChildObject[] { new LANG1261ChildObject() };
51 assertTrue(ArrayUtils.contains(array, new LANG1261ParentObject()));
52 }
53
54 @Test
55 public void testIndexOf() {
56 final Object[] array = { "0", "1", "2", "3", null, "0" };
57 assertEquals(-1, ArrayUtils.indexOf(null, null));
58 assertEquals(-1, ArrayUtils.indexOf(null, "0"));
59 assertEquals(-1, ArrayUtils.indexOf(new Object[0], "0"));
60 assertEquals(0, ArrayUtils.indexOf(array, "0"));
61 assertEquals(1, ArrayUtils.indexOf(array, "1"));
62 assertEquals(2, ArrayUtils.indexOf(array, "2"));
63 assertEquals(3, ArrayUtils.indexOf(array, "3"));
64 assertEquals(4, ArrayUtils.indexOf(array, null));
65 assertEquals(-1, ArrayUtils.indexOf(array, "notInArray"));
66 }
67 }