| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.lang3; |
| |
| import static org.junit.jupiter.api.Assertions.assertArrayEquals; |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertFalse; |
| import static org.junit.jupiter.api.Assertions.assertNotNull; |
| import static org.junit.jupiter.api.Assertions.assertNull; |
| import static org.junit.jupiter.api.Assertions.assertThrows; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| import static org.junit.jupiter.params.provider.Arguments.arguments; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Modifier; |
| import java.util.Random; |
| import java.util.stream.IntStream; |
| import java.util.stream.Stream; |
| |
| import org.junit.jupiter.api.Test; |
| import org.junit.jupiter.params.ParameterizedTest; |
| import org.junit.jupiter.params.provider.Arguments; |
| import org.junit.jupiter.params.provider.MethodSource; |
| |
| /** |
| * Tests CharSequenceUtils |
| */ |
| public class CharSequenceUtilsTest extends AbstractLangTest { |
| |
| @Test |
| public void testConstructor() { |
| assertNotNull(new CharSequenceUtils()); |
| final Constructor<?>[] cons = CharSequenceUtils.class.getDeclaredConstructors(); |
| assertEquals(1, cons.length); |
| assertTrue(Modifier.isPublic(cons[0].getModifiers())); |
| assertTrue(Modifier.isPublic(CharSequenceUtils.class.getModifiers())); |
| assertFalse(Modifier.isFinal(CharSequenceUtils.class.getModifiers())); |
| } |
| |
| @Test |
| public void testSubSequence() { |
| // |
| // null input |
| // |
| assertNull(CharSequenceUtils.subSequence(null, -1)); |
| assertNull(CharSequenceUtils.subSequence(null, 0)); |
| assertNull(CharSequenceUtils.subSequence(null, 1)); |
| // |
| // non-null input |
| // |
| assertEquals(StringUtils.EMPTY, CharSequenceUtils.subSequence(StringUtils.EMPTY, 0)); |
| assertEquals("012", CharSequenceUtils.subSequence("012", 0)); |
| assertEquals("12", CharSequenceUtils.subSequence("012", 1)); |
| assertEquals("2", CharSequenceUtils.subSequence("012", 2)); |
| assertEquals(StringUtils.EMPTY, CharSequenceUtils.subSequence("012", 3)); |
| } |
| |
| @Test |
| public void testSubSequenceNegativeStart() { |
| assertThrows(IndexOutOfBoundsException.class, () -> CharSequenceUtils.subSequence(StringUtils.EMPTY, -1)); |
| } |
| |
| @Test |
| public void testSubSequenceTooLong() { |
| assertThrows(IndexOutOfBoundsException.class, () -> CharSequenceUtils.subSequence(StringUtils.EMPTY, 1)); |
| } |
| |
| static class TestData{ |
| final String source; |
| final boolean ignoreCase; |
| final int toffset; |
| final String other; |
| final int ooffset; |
| final int len; |
| final boolean expected; |
| final Class<? extends Throwable> throwable; |
| TestData(final String source, final boolean ignoreCase, final int toffset, |
| final String other, final int ooffset, final int len, final boolean expected) { |
| this.source = source; |
| this.ignoreCase = ignoreCase; |
| this.toffset = toffset; |
| this.other = other; |
| this.ooffset = ooffset; |
| this.len = len; |
| this.expected = expected; |
| this.throwable = null; |
| } |
| TestData(final String source, final boolean ignoreCase, final int toffset, |
| final String other, final int ooffset, final int len, final Class<? extends Throwable> throwable) { |
| this.source = source; |
| this.ignoreCase = ignoreCase; |
| this.toffset = toffset; |
| this.other = other; |
| this.ooffset = ooffset; |
| this.len = len; |
| this.expected = false; |
| this.throwable = throwable; |
| } |
| @Override |
| public String toString() { |
| final StringBuilder sb = new StringBuilder(); |
| sb.append(source).append("[").append(toffset).append("]"); |
| sb.append(ignoreCase? " caseblind ":" samecase "); |
| sb.append(other).append("[").append(ooffset).append("]"); |
| sb.append(" ").append(len).append(" => "); |
| if (throwable != null) { |
| sb.append(throwable); |
| } else { |
| sb.append(expected); |
| } |
| return sb.toString(); |
| } |
| } |
| |
| private static final TestData[] TEST_DATA = { |
| // Source IgnoreCase Offset Other Offset Length Result |
| new TestData("", true, -1, "", -1, -1, false), |
| new TestData("", true, 0, "", 0, 1, false), |
| new TestData("a", true, 0, "abc", 0, 0, true), |
| new TestData("a", true, 0, "abc", 0, 1, true), |
| new TestData("a", true, 0, null, 0, 0, NullPointerException.class), |
| new TestData(null, true, 0, null, 0, 0, NullPointerException.class), |
| new TestData(null, true, 0, "", 0, 0, NullPointerException.class), |
| new TestData("Abc", true, 0, "abc", 0, 3, true), |
| new TestData("Abc", false, 0, "abc", 0, 3, false), |
| new TestData("Abc", true, 1, "abc", 1, 2, true), |
| new TestData("Abc", false, 1, "abc", 1, 2, true), |
| new TestData("Abcd", true, 1, "abcD", 1, 2, true), |
| new TestData("Abcd", false, 1, "abcD", 1, 2, true), |
| }; |
| |
| private abstract static class RunTest { |
| |
| abstract boolean invoke(); |
| |
| void run(final TestData data, final String id) { |
| if (data.throwable != null) { |
| assertThrows(data.throwable, this::invoke, id + " Expected " + data.throwable); |
| } else { |
| final boolean stringCheck = invoke(); |
| assertEquals(data.expected, stringCheck, id + " Failed test " + data); |
| } |
| } |
| |
| } |
| |
| @Test |
| public void testRegionMatches() { |
| for (final TestData data : TEST_DATA) { |
| new RunTest() { |
| @Override |
| boolean invoke() { |
| return data.source.regionMatches(data.ignoreCase, data.toffset, data.other, data.ooffset, data.len); |
| } |
| }.run(data, "String"); |
| new RunTest() { |
| @Override |
| boolean invoke() { |
| return CharSequenceUtils.regionMatches(data.source, data.ignoreCase, data.toffset, data.other, data.ooffset, data.len); |
| } |
| }.run(data, "CSString"); |
| new RunTest() { |
| @Override |
| boolean invoke() { |
| return CharSequenceUtils.regionMatches(new StringBuilder(data.source), data.ignoreCase, data.toffset, data.other, data.ooffset, data.len); |
| } |
| }.run(data, "CSNonString"); |
| } |
| } |
| |
| |
| @Test |
| public void testToCharArray() { |
| final StringBuilder builder = new StringBuilder("abcdefg"); |
| final char[] expected = builder.toString().toCharArray(); |
| assertArrayEquals(expected, CharSequenceUtils.toCharArray(builder)); |
| assertArrayEquals(expected, CharSequenceUtils.toCharArray(builder.toString())); |
| assertArrayEquals(ArrayUtils.EMPTY_CHAR_ARRAY, CharSequenceUtils.toCharArray(null)); |
| } |
| |
| static class WrapperString implements CharSequence { |
| private final CharSequence inner; |
| |
| WrapperString(final CharSequence inner) { |
| this.inner = inner; |
| } |
| |
| @Override |
| public int length() { |
| return inner.length(); |
| } |
| |
| @Override |
| public char charAt(final int index) { |
| return inner.charAt(index); |
| } |
| |
| @Override |
| public CharSequence subSequence(final int start, final int end) { |
| return inner.subSequence(start, end); |
| } |
| |
| @Override |
| public String toString() { |
| return inner.toString(); |
| } |
| |
| @Override |
| public IntStream chars() { |
| return inner.chars(); |
| } |
| |
| @Override |
| public IntStream codePoints() { |
| return inner.codePoints(); |
| } |
| } |
| |
| @Test |
| public void testNewLastIndexOf() { |
| testNewLastIndexOfSingle("808087847-1321060740-635567660180086727-925755305", "-1321060740-635567660", 21); |
| testNewLastIndexOfSingle("", ""); |
| testNewLastIndexOfSingle("1", ""); |
| testNewLastIndexOfSingle("", "1"); |
| testNewLastIndexOfSingle("1", "1"); |
| testNewLastIndexOfSingle("11", "1"); |
| testNewLastIndexOfSingle("1", "11"); |
| |
| testNewLastIndexOfSingle("apache", "a"); |
| testNewLastIndexOfSingle("apache", "p"); |
| testNewLastIndexOfSingle("apache", "e"); |
| testNewLastIndexOfSingle("apache", "x"); |
| testNewLastIndexOfSingle("oraoraoraora", "r"); |
| testNewLastIndexOfSingle("mudamudamudamuda", "d"); |
| // There is a route through checkLaterThan1#checkLaterThan1 |
| // which only gets touched if there is a two letter (or more) partial match |
| // (in this case "st") earlier in the searched string. |
| testNewLastIndexOfSingle("junk-ststarting", "starting"); |
| |
| final Random random = new Random(); |
| final StringBuilder seg = new StringBuilder(); |
| while (seg.length() <= CharSequenceUtils.TO_STRING_LIMIT) { |
| seg.append(random.nextInt()); |
| } |
| StringBuilder original = new StringBuilder(seg); |
| testNewLastIndexOfSingle(original, seg); |
| for (int i = 0; i < 100; i++) { |
| if (random.nextDouble() < 0.5) { |
| original.append(random.nextInt() % 10); |
| } else { |
| original = new StringBuilder().append(String.valueOf(random.nextInt() % 100)).append(original); |
| } |
| testNewLastIndexOfSingle(original, seg); |
| } |
| } |
| |
| @ParameterizedTest |
| @MethodSource("lastIndexWithStandardCharSequence") |
| public void testLastIndexOfWithDifferentCharSequences(final CharSequence cs, final CharSequence search, final int start, |
| final int expected) { |
| assertEquals(expected, CharSequenceUtils.lastIndexOf(cs, search, start)); |
| } |
| |
| static Stream<Arguments> lastIndexWithStandardCharSequence() { |
| return Stream.of( |
| arguments("abc", "b", 2, 1), |
| arguments(new StringBuilder("abc"), "b", 2, 1), |
| arguments(new StringBuffer("abc"), "b", 2, 1), |
| arguments("abc", new StringBuilder("b"), 2, 1), |
| arguments(new StringBuilder("abc"), new StringBuilder("b"), 2, 1), |
| arguments(new StringBuffer("abc"), new StringBuffer("b"), 2, 1), |
| arguments(new StringBuilder("abc"), new StringBuffer("b"), 2, 1) |
| ); |
| } |
| |
| private void testNewLastIndexOfSingle(final CharSequence a, final CharSequence b) { |
| final int maxa = Math.max(a.length(), b.length()); |
| for (int i = -maxa - 10; i <= maxa + 10; i++) { |
| testNewLastIndexOfSingle(a, b, i); |
| } |
| testNewLastIndexOfSingle(a, b, Integer.MIN_VALUE); |
| testNewLastIndexOfSingle(a, b, Integer.MAX_VALUE); |
| } |
| |
| private void testNewLastIndexOfSingle(final CharSequence a, final CharSequence b, final int start) { |
| testNewLastIndexOfSingleSingle(a, b, start); |
| testNewLastIndexOfSingleSingle(b, a, start); |
| } |
| |
| private void testNewLastIndexOfSingleSingle(final CharSequence a, final CharSequence b, final int start) { |
| assertEquals( |
| a.toString().lastIndexOf(b.toString(), start), |
| CharSequenceUtils.lastIndexOf(new WrapperString(a.toString()), new WrapperString(b.toString()), start), |
| "testNewLastIndexOf fails! original : " + a + " seg : " + b + " start : " + start |
| ); |
| } |
| } |