1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * https://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.lang3;
19
20 import static org.junit.jupiter.api.Assertions.assertEquals;
21
22 import org.junit.jupiter.api.Test;
23
24 /**
25 * Tests {@code StringUtils#indexOfAny(...)}} methods.
26 * <p>
27 * Negative start index can crash new indexOfAny overload.
28 * </p>
29 * <p>
30 * indexOfAny(CharSequence, int, char...) does not clamp negative csStart. When csStart < 0, the loop starts at a negative index causing
31 * StringIndexOutOfBoundsException.
32 * </p>
33 * <p>
34 * Pre-patch: indexOfAny("abc", -1, 'a') throws StringIndexOutOfBoundsException.
35 * </p>
36 * <p>
37 * Post-patch: returns 0 (clamped to 0 per StringUtils convention).
38 * </p>
39 */
40 public class StringUtilsIndexOfAnyTest {
41
42 @Test
43 public void testLargeNegativeStartIndexClampsToZero() {
44 assertEquals(0, StringUtils.indexOfAny("abc", Integer.MIN_VALUE, 'a'));
45 }
46
47 @Test
48 public void testNegativeStartIndexClampsToZero() {
49 // With csStart clamped to 0, the search finds 'a' at index 0
50 assertEquals(0, StringUtils.indexOfAny("abc", -1, 'a'));
51 }
52
53 @Test
54 public void testNegativeStartIndexDoesNotThrow() {
55 assertEquals(0, StringUtils.indexOfAny("abc", -1, 'a'));
56 }
57
58 @Test
59 public void testPositiveStartIndexWorksNormally() {
60 // Start after 'a', should find 'b' at index 1
61 assertEquals(1, StringUtils.indexOfAny("abc", 1, 'b'));
62 }
63
64 @Test
65 public void testZeroStartIndexWorksNormally() {
66 assertEquals(1, StringUtils.indexOfAny("abc", 0, 'b'));
67 }
68 }