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Diffstat (limited to 'src/test/java/org/apache/commons/lang3/StringUtilsTest.java')
| -rw-r--r-- | src/test/java/org/apache/commons/lang3/StringUtilsTest.java | 3391 |
1 files changed, 3391 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/lang3/StringUtilsTest.java b/src/test/java/org/apache/commons/lang3/StringUtilsTest.java new file mode 100644 index 000000000..bc5aeef80 --- /dev/null +++ b/src/test/java/org/apache/commons/lang3/StringUtilsTest.java @@ -0,0 +1,3391 @@ +/* + * 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.assertNotEquals; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertSame; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +import java.io.UnsupportedEncodingException; +import java.lang.reflect.Constructor; +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; +import java.nio.CharBuffer; +import java.nio.charset.Charset; +import java.nio.charset.StandardCharsets; +import java.util.Arrays; +import java.util.Collections; +import java.util.Iterator; +import java.util.List; +import java.util.Locale; +import java.util.Objects; +import java.util.function.Supplier; +import java.util.regex.PatternSyntaxException; + +import org.apache.commons.lang3.mutable.MutableInt; +import org.apache.commons.lang3.text.WordUtils; +import org.junit.jupiter.api.Disabled; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.params.ParameterizedTest; +import org.junit.jupiter.params.provider.ValueSource; + +/** + * Unit tests for methods of {@link org.apache.commons.lang3.StringUtils} + * which been moved to their own test classes. + */ +@SuppressWarnings("deprecation") // deliberate use of deprecated code +public class StringUtilsTest extends AbstractLangTest { + + static final String WHITESPACE; + static final String NON_WHITESPACE; + static final String HARD_SPACE; + static final String TRIMMABLE; + static final String NON_TRIMMABLE; + + static { + final StringBuilder ws = new StringBuilder(); + final StringBuilder nws = new StringBuilder(); + final String hs = String.valueOf((char) 160); + final StringBuilder tr = new StringBuilder(); + final StringBuilder ntr = new StringBuilder(); + for (int i = 0; i < Character.MAX_VALUE; i++) { + if (Character.isWhitespace((char) i)) { + ws.append(String.valueOf((char) i)); + if (i > 32) { + ntr.append(String.valueOf((char) i)); + } + } else if (i < 40) { + nws.append(String.valueOf((char) i)); + } + } + for (int i = 0; i <= 32; i++) { + tr.append(String.valueOf((char) i)); + } + WHITESPACE = ws.toString(); + NON_WHITESPACE = nws.toString(); + HARD_SPACE = hs; + TRIMMABLE = tr.toString(); + NON_TRIMMABLE = ntr.toString(); + } + + private static final String[] ARRAY_LIST = {"foo", "bar", "baz"}; + private static final String[] EMPTY_ARRAY_LIST = {}; + private static final String[] NULL_ARRAY_LIST = {null}; + private static final Object[] NULL_TO_STRING_LIST = { + new Object() { + @Override + public String toString() { + return null; + } + } + }; + private static final String[] MIXED_ARRAY_LIST = {null, "", "foo"}; + private static final Object[] MIXED_TYPE_LIST = {"foo", Long.valueOf(2L)}; + private static final long[] LONG_PRIM_LIST = {1, 2}; + private static final int[] INT_PRIM_LIST = {1, 2}; + private static final byte[] BYTE_PRIM_LIST = {1, 2}; + private static final short[] SHORT_PRIM_LIST = {1, 2}; + private static final char[] CHAR_PRIM_LIST = {'1', '2'}; + private static final float[] FLOAT_PRIM_LIST = {1, 2}; + private static final double[] DOUBLE_PRIM_LIST = {1, 2}; + private static final List<String> MIXED_STRING_LIST = Arrays.asList(null, "", "foo"); + private static final List<Object> MIXED_TYPE_OBJECT_LIST = Arrays.<Object>asList("foo", Long.valueOf(2L)); + private static final List<String> STRING_LIST = Arrays.asList("foo", "bar", "baz"); + private static final List<String> EMPTY_STRING_LIST = Collections.emptyList(); + private static final List<String> NULL_STRING_LIST = Collections.singletonList(null); + + private static final String SEPARATOR = ","; + private static final char SEPARATOR_CHAR = ';'; + private static final char COMMA_SEPARATOR_CHAR = ','; + + private static final String TEXT_LIST = "foo,bar,baz"; + private static final String TEXT_LIST_CHAR = "foo;bar;baz"; + private static final String TEXT_LIST_NOSEP = "foobarbaz"; + + private static final String FOO_UNCAP = "foo"; + private static final String FOO_CAP = "Foo"; + + private static final String SENTENCE_UNCAP = "foo bar baz"; + private static final String SENTENCE_CAP = "Foo Bar Baz"; + + private static final boolean[] EMPTY = {}; + private static final boolean[] ARRAY_FALSE_FALSE = {false, false}; + private static final boolean[] ARRAY_FALSE_TRUE = {false, true}; + private static final boolean[] ARRAY_FALSE_TRUE_FALSE = {false, true, false}; + + private void assertAbbreviateWithAbbrevMarkerAndOffset(final String expected, final String abbrevMarker, final int offset, final int maxWidth) { + final String abcdefghijklmno = "abcdefghijklmno"; + final String message = "abbreviate(String,String,int,int) failed"; + final String actual = StringUtils.abbreviate(abcdefghijklmno, abbrevMarker, offset, maxWidth); + if (offset >= 0 && offset < abcdefghijklmno.length()) { + assertTrue(actual.indexOf((char) ('a' + offset)) != -1, + message + " -- should contain offset character"); + } + assertTrue(actual.length() <= maxWidth, + message + " -- should not be greater than maxWidth"); + assertEquals(expected, actual, message); + } + + private void assertAbbreviateWithOffset(final String expected, final int offset, final int maxWidth) { + final String abcdefghijklmno = "abcdefghijklmno"; + final String message = "abbreviate(String,int,int) failed"; + final String actual = StringUtils.abbreviate(abcdefghijklmno, offset, maxWidth); + if (offset >= 0 && offset < abcdefghijklmno.length()) { + assertTrue(actual.indexOf((char) ('a' + offset)) != -1, + message + " -- should contain offset character"); + } + assertTrue(actual.length() <= maxWidth, + message + " -- should not be greater than maxWidth"); + assertEquals(expected, actual, message); + } + + private void innerTestSplit(final char separator, final String sepStr, final char noMatch) { + final String msg = "Failed on separator hex(" + Integer.toHexString(separator) + + "), noMatch hex(" + Integer.toHexString(noMatch) + "), sepStr(" + sepStr + ")"; + + final String str = "a" + separator + "b" + separator + separator + noMatch + "c"; + String[] res; + // (str, sepStr) + res = StringUtils.split(str, sepStr); + assertEquals(3, res.length, msg); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals(noMatch + "c", res[2]); + + final String str2 = separator + "a" + separator; + res = StringUtils.split(str2, sepStr); + assertEquals(1, res.length, msg); + assertEquals("a", res[0], msg); + + res = StringUtils.split(str, sepStr, -1); + assertEquals(3, res.length, msg); + assertEquals("a", res[0], msg); + assertEquals("b", res[1], msg); + assertEquals(noMatch + "c", res[2], msg); + + res = StringUtils.split(str, sepStr, 0); + assertEquals(3, res.length, msg); + assertEquals("a", res[0], msg); + assertEquals("b", res[1], msg); + assertEquals(noMatch + "c", res[2], msg); + + res = StringUtils.split(str, sepStr, 1); + assertEquals(1, res.length, msg); + assertEquals(str, res[0], msg); + + res = StringUtils.split(str, sepStr, 2); + assertEquals(2, res.length, msg); + assertEquals("a", res[0], msg); + assertEquals(str.substring(2), res[1], msg); + } + + private void innerTestSplitPreserveAllTokens(final char separator, final String sepStr, final char noMatch) { + final String msg = "Failed on separator hex(" + Integer.toHexString(separator) + + "), noMatch hex(" + Integer.toHexString(noMatch) + "), sepStr(" + sepStr + ")"; + + final String str = "a" + separator + "b" + separator + separator + noMatch + "c"; + String[] res; + // (str, sepStr) + res = StringUtils.splitPreserveAllTokens(str, sepStr); + assertEquals(4, res.length, msg); + assertEquals("a", res[0], msg); + assertEquals("b", res[1], msg); + assertEquals("", res[2], msg); + assertEquals(noMatch + "c", res[3], msg); + + final String str2 = separator + "a" + separator; + res = StringUtils.splitPreserveAllTokens(str2, sepStr); + assertEquals(3, res.length, msg); + assertEquals("", res[0], msg); + assertEquals("a", res[1], msg); + assertEquals("", res[2], msg); + + res = StringUtils.splitPreserveAllTokens(str, sepStr, -1); + assertEquals(4, res.length, msg); + assertEquals("a", res[0], msg); + assertEquals("b", res[1], msg); + assertEquals("", res[2], msg); + assertEquals(noMatch + "c", res[3], msg); + + res = StringUtils.splitPreserveAllTokens(str, sepStr, 0); + assertEquals(4, res.length, msg); + assertEquals("a", res[0], msg); + assertEquals("b", res[1], msg); + assertEquals("", res[2], msg); + assertEquals(noMatch + "c", res[3], msg); + + res = StringUtils.splitPreserveAllTokens(str, sepStr, 1); + assertEquals(1, res.length, msg); + assertEquals(str, res[0], msg); + + res = StringUtils.splitPreserveAllTokens(str, sepStr, 2); + assertEquals(2, res.length, msg); + assertEquals("a", res[0], msg); + assertEquals(str.substring(2), res[1], msg); + } + + //Fixed LANG-1463 + @Test + public void testAbbreviateMarkerWithEmptyString() { + final String greaterThanMaxTest = "much too long text"; + assertEquals("much too long", StringUtils.abbreviate(greaterThanMaxTest, "", 13)); + } + + @Test + public void testAbbreviate_StringInt() { + assertNull(StringUtils.abbreviate(null, 10)); + assertEquals("", StringUtils.abbreviate("", 10)); + assertEquals("short", StringUtils.abbreviate("short", 10)); + assertEquals("Now is ...", StringUtils.abbreviate("Now is the time for all good men to come to the aid of their party.", 10)); + + final String raspberry = "raspberry peach"; + assertEquals("raspberry p...", StringUtils.abbreviate(raspberry, 14)); + assertEquals("raspberry peach", StringUtils.abbreviate("raspberry peach", 15)); + assertEquals("raspberry peach", StringUtils.abbreviate("raspberry peach", 16)); + assertEquals("abc...", StringUtils.abbreviate("abcdefg", 6)); + assertEquals("abcdefg", StringUtils.abbreviate("abcdefg", 7)); + assertEquals("abcdefg", StringUtils.abbreviate("abcdefg", 8)); + assertEquals("a...", StringUtils.abbreviate("abcdefg", 4)); + assertEquals("", StringUtils.abbreviate("", 4)); + + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.abbreviate("abc", 3), + "StringUtils.abbreviate expecting IllegalArgumentException"); + } + + @Test + public void testAbbreviate_StringIntInt() { + assertNull(StringUtils.abbreviate(null, 10, 12)); + assertEquals("", StringUtils.abbreviate("", 0, 10)); + assertEquals("", StringUtils.abbreviate("", 2, 10)); + + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.abbreviate("abcdefghij", 0, 3), + "StringUtils.abbreviate expecting IllegalArgumentException"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.abbreviate("abcdefghij", 5, 6), + "StringUtils.abbreviate expecting IllegalArgumentException"); + + final String raspberry = "raspberry peach"; + assertEquals("raspberry peach", StringUtils.abbreviate(raspberry, 11, 15)); + + assertNull(StringUtils.abbreviate(null, 7, 14)); + assertAbbreviateWithOffset("abcdefg...", -1, 10); + assertAbbreviateWithOffset("abcdefg...", 0, 10); + assertAbbreviateWithOffset("abcdefg...", 1, 10); + assertAbbreviateWithOffset("abcdefg...", 2, 10); + assertAbbreviateWithOffset("abcdefg...", 3, 10); + assertAbbreviateWithOffset("abcdefg...", 4, 10); + assertAbbreviateWithOffset("...fghi...", 5, 10); + assertAbbreviateWithOffset("...ghij...", 6, 10); + assertAbbreviateWithOffset("...hijk...", 7, 10); + assertAbbreviateWithOffset("...ijklmno", 8, 10); + assertAbbreviateWithOffset("...ijklmno", 9, 10); + assertAbbreviateWithOffset("...ijklmno", 10, 10); + assertAbbreviateWithOffset("...ijklmno", 11, 10); + assertAbbreviateWithOffset("...ijklmno", 12, 10); + assertAbbreviateWithOffset("...ijklmno", 13, 10); + assertAbbreviateWithOffset("...ijklmno", 14, 10); + assertAbbreviateWithOffset("...ijklmno", 15, 10); + assertAbbreviateWithOffset("...ijklmno", 16, 10); + assertAbbreviateWithOffset("...ijklmno", Integer.MAX_VALUE, 10); + } + + @Test + public void testAbbreviate_StringStringInt() { + assertNull(StringUtils.abbreviate(null, null, 10)); + assertNull(StringUtils.abbreviate(null, "...", 10)); + assertEquals("paranaguacu", StringUtils.abbreviate("paranaguacu", null, 10)); + assertEquals("", StringUtils.abbreviate("", "...", 2)); + assertEquals("wai**", StringUtils.abbreviate("waiheke", "**", 5)); + assertEquals("And af,,,,", StringUtils.abbreviate("And after a long time, he finally met his son.", ",,,,", 10)); + + final String raspberry = "raspberry peach"; + assertEquals("raspberry pe..", StringUtils.abbreviate(raspberry, "..", 14)); + assertEquals("raspberry peach", StringUtils.abbreviate("raspberry peach", "---*---", 15)); + assertEquals("raspberry peach", StringUtils.abbreviate("raspberry peach", ".", 16)); + assertEquals("abc()(", StringUtils.abbreviate("abcdefg", "()(", 6)); + assertEquals("abcdefg", StringUtils.abbreviate("abcdefg", ";", 7)); + assertEquals("abcdefg", StringUtils.abbreviate("abcdefg", "_-", 8)); + assertEquals("abc.", StringUtils.abbreviate("abcdefg", ".", 4)); + assertEquals("", StringUtils.abbreviate("", 4)); + + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.abbreviate("abcdefghij", "...", 3), + "StringUtils.abbreviate expecting IllegalArgumentException"); + } + + @Test + public void testAbbreviate_StringStringIntInt() { + assertNull(StringUtils.abbreviate(null, null, 10, 12)); + assertNull(StringUtils.abbreviate(null, "...", 10, 12)); + assertEquals("", StringUtils.abbreviate("", null, 0, 10)); + assertEquals("", StringUtils.abbreviate("", "...", 2, 10)); + + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.abbreviate("abcdefghij", "::", 0, 2), + "StringUtils.abbreviate expecting IllegalArgumentException"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.abbreviate("abcdefghij", "!!!", 5, 6), + "StringUtils.abbreviate expecting IllegalArgumentException"); + + final String raspberry = "raspberry peach"; + assertEquals("raspberry peach", StringUtils.abbreviate(raspberry, "--", 12, 15)); + + assertNull(StringUtils.abbreviate(null, ";", 7, 14)); + assertAbbreviateWithAbbrevMarkerAndOffset("abcdefgh;;", ";;", -1, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("abcdefghi.", ".", 0, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("abcdefgh++", "++", 1, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("abcdefghi*", "*", 2, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("abcdef{{{{", "{{{{", 4, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("abcdef____", "____", 5, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("==fghijk==", "==", 5, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("___ghij___", "___", 6, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("/ghijklmno", "/", 7, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("/ghijklmno", "/", 8, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("/ghijklmno", "/", 9, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("///ijklmno", "///", 10, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("//hijklmno", "//", 10, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("//hijklmno", "//", 11, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("...ijklmno", "...", 12, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("/ghijklmno", "/", 13, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("/ghijklmno", "/", 14, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("999ijklmno", "999", 15, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("_ghijklmno", "_", 16, 10); + assertAbbreviateWithAbbrevMarkerAndOffset("+ghijklmno", "+", Integer.MAX_VALUE, 10); + } + + @Test + public void testAbbreviateMiddle() { + // javadoc examples + assertNull(StringUtils.abbreviateMiddle(null, null, 0)); + assertEquals("abc", StringUtils.abbreviateMiddle("abc", null, 0)); + assertEquals("abc", StringUtils.abbreviateMiddle("abc", ".", 0)); + assertEquals("abc", StringUtils.abbreviateMiddle("abc", ".", 3)); + assertEquals("ab.f", StringUtils.abbreviateMiddle("abcdef", ".", 4)); + + // JIRA issue (LANG-405) example (slightly different than actual expected result) + assertEquals( + "A very long text with un...f the text is complete.", + StringUtils.abbreviateMiddle( + "A very long text with unimportant stuff in the middle but interesting start and " + + "end to see if the text is complete.", "...", 50)); + + // Test a much longer text :) + final String longText = "Start text" + StringUtils.repeat("x", 10000) + "Close text"; + assertEquals( + "Start text->Close text", + StringUtils.abbreviateMiddle(longText, "->", 22)); + + // Test negative length + assertEquals("abc", StringUtils.abbreviateMiddle("abc", ".", -1)); + + // Test boundaries + // Fails to change anything as method ensures first and last char are kept + assertEquals("abc", StringUtils.abbreviateMiddle("abc", ".", 1)); + assertEquals("abc", StringUtils.abbreviateMiddle("abc", ".", 2)); + + // Test length of n=1 + assertEquals("a", StringUtils.abbreviateMiddle("a", ".", 1)); + + // Test smallest length that can lead to success + assertEquals("a.d", StringUtils.abbreviateMiddle("abcd", ".", 3)); + + // More from LANG-405 + assertEquals("a..f", StringUtils.abbreviateMiddle("abcdef", "..", 4)); + assertEquals("ab.ef", StringUtils.abbreviateMiddle("abcdef", ".", 5)); + } + + /** + * Tests {@code appendIfMissing}. + */ + @Test + public void testAppendIfMissing() { + assertNull(StringUtils.appendIfMissing(null, null), "appendIfMissing(null,null)"); + assertEquals("abc", StringUtils.appendIfMissing("abc", null), "appendIfMissing(abc,null)"); + assertEquals("xyz", StringUtils.appendIfMissing("", "xyz"), "appendIfMissing(\"\",xyz)"); + assertEquals("abcxyz", StringUtils.appendIfMissing("abc", "xyz"), "appendIfMissing(abc,xyz)"); + assertEquals("abcxyz", StringUtils.appendIfMissing("abcxyz", "xyz"), "appendIfMissing(abcxyz,xyz)"); + assertEquals("aXYZxyz", StringUtils.appendIfMissing("aXYZ", "xyz"), "appendIfMissing(aXYZ,xyz)"); + + assertNull(StringUtils.appendIfMissing(null, null, (CharSequence[]) null), "appendIfMissing(null,null,null)"); + assertEquals("abc", StringUtils.appendIfMissing("abc", null, (CharSequence[]) null), "appendIfMissing(abc,null,null)"); + assertEquals("xyz", StringUtils.appendIfMissing("", "xyz", (CharSequence[]) null), "appendIfMissing(\"\",xyz,null))"); + assertEquals("abcxyz", StringUtils.appendIfMissing("abc", "xyz", null), "appendIfMissing(abc,xyz,{null})"); + assertEquals("abc", StringUtils.appendIfMissing("abc", "xyz", ""), "appendIfMissing(abc,xyz,\"\")"); + assertEquals("abcxyz", StringUtils.appendIfMissing("abc", "xyz", "mno"), "appendIfMissing(abc,xyz,mno)"); + assertEquals("abcxyz", StringUtils.appendIfMissing("abcxyz", "xyz", "mno"), "appendIfMissing(abcxyz,xyz,mno)"); + assertEquals("abcmno", StringUtils.appendIfMissing("abcmno", "xyz", "mno"), "appendIfMissing(abcmno,xyz,mno)"); + assertEquals("abcXYZxyz", StringUtils.appendIfMissing("abcXYZ", "xyz", "mno"), "appendIfMissing(abcXYZ,xyz,mno)"); + assertEquals("abcMNOxyz", StringUtils.appendIfMissing("abcMNO", "xyz", "mno"), "appendIfMissing(abcMNO,xyz,mno)"); + } + + /** + * Tests {@code appendIfMissingIgnoreCase}. + */ + @Test + public void testAppendIfMissingIgnoreCase() { + assertNull(StringUtils.appendIfMissingIgnoreCase(null, null), "appendIfMissingIgnoreCase(null,null)"); + assertEquals("abc", StringUtils.appendIfMissingIgnoreCase("abc", null), "appendIfMissingIgnoreCase(abc,null)"); + assertEquals("xyz", StringUtils.appendIfMissingIgnoreCase("", "xyz"), "appendIfMissingIgnoreCase(\"\",xyz)"); + assertEquals("abcxyz", StringUtils.appendIfMissingIgnoreCase("abc", "xyz"), "appendIfMissingIgnoreCase(abc,xyz)"); + assertEquals("abcxyz", StringUtils.appendIfMissingIgnoreCase("abcxyz", "xyz"), "appendIfMissingIgnoreCase(abcxyz,xyz)"); + assertEquals("abcXYZ", StringUtils.appendIfMissingIgnoreCase("abcXYZ", "xyz"), "appendIfMissingIgnoreCase(abcXYZ,xyz)"); + + assertNull(StringUtils.appendIfMissingIgnoreCase(null, null, (CharSequence[]) null), "appendIfMissingIgnoreCase(null,null,null)"); + assertEquals("abc", StringUtils.appendIfMissingIgnoreCase("abc", null, (CharSequence[]) null), "appendIfMissingIgnoreCase(abc,null,null)"); + assertEquals("xyz", StringUtils.appendIfMissingIgnoreCase("", "xyz", (CharSequence[]) null), "appendIfMissingIgnoreCase(\"\",xyz,null)"); + assertEquals("abcxyz", StringUtils.appendIfMissingIgnoreCase("abc", "xyz", null), "appendIfMissingIgnoreCase(abc,xyz,{null})"); + assertEquals("abc", StringUtils.appendIfMissingIgnoreCase("abc", "xyz", ""), "appendIfMissingIgnoreCase(abc,xyz,\"\")"); + assertEquals("abcxyz", StringUtils.appendIfMissingIgnoreCase("abc", "xyz", "mno"), "appendIfMissingIgnoreCase(abc,xyz,mno)"); + assertEquals("abcxyz", StringUtils.appendIfMissingIgnoreCase("abcxyz", "xyz", "mno"), "appendIfMissingIgnoreCase(abcxyz,xyz,mno)"); + assertEquals("abcmno", StringUtils.appendIfMissingIgnoreCase("abcmno", "xyz", "mno"), "appendIfMissingIgnoreCase(abcmno,xyz,mno)"); + assertEquals("abcXYZ", StringUtils.appendIfMissingIgnoreCase("abcXYZ", "xyz", "mno"), "appendIfMissingIgnoreCase(abcXYZ,xyz,mno)"); + assertEquals("abcMNO", StringUtils.appendIfMissingIgnoreCase("abcMNO", "xyz", "mno"), "appendIfMissingIgnoreCase(abcMNO,xyz,mno)"); + } + + @Test + public void testCapitalize() { + assertNull(StringUtils.capitalize(null)); + + assertEquals("", StringUtils.capitalize(""), "capitalize(empty-string) failed"); + assertEquals("X", StringUtils.capitalize("x"), "capitalize(single-char-string) failed"); + assertEquals(FOO_CAP, StringUtils.capitalize(FOO_CAP), "capitalize(String) failed"); + assertEquals(FOO_CAP, StringUtils.capitalize(FOO_UNCAP), "capitalize(string) failed"); + + assertEquals("\u01C8", StringUtils.capitalize("\u01C9"), "capitalize(String) is not using TitleCase"); + + // Javadoc examples + assertNull(StringUtils.capitalize(null)); + assertEquals("", StringUtils.capitalize("")); + assertEquals("Cat", StringUtils.capitalize("cat")); + assertEquals("CAt", StringUtils.capitalize("cAt")); + assertEquals("'cat'", StringUtils.capitalize("'cat'")); + } + + @Test + public void testCenter_StringInt() { + assertNull(StringUtils.center(null, -1)); + assertNull(StringUtils.center(null, 4)); + assertEquals(" ", StringUtils.center("", 4)); + assertEquals("ab", StringUtils.center("ab", 0)); + assertEquals("ab", StringUtils.center("ab", -1)); + assertEquals("ab", StringUtils.center("ab", 1)); + assertEquals(" ", StringUtils.center("", 4)); + assertEquals(" ab ", StringUtils.center("ab", 4)); + assertEquals("abcd", StringUtils.center("abcd", 2)); + assertEquals(" a ", StringUtils.center("a", 4)); + assertEquals(" a ", StringUtils.center("a", 5)); + } + + @Test + public void testCenter_StringIntChar() { + assertNull(StringUtils.center(null, -1, ' ')); + assertNull(StringUtils.center(null, 4, ' ')); + assertEquals(" ", StringUtils.center("", 4, ' ')); + assertEquals("ab", StringUtils.center("ab", 0, ' ')); + assertEquals("ab", StringUtils.center("ab", -1, ' ')); + assertEquals("ab", StringUtils.center("ab", 1, ' ')); + assertEquals(" ", StringUtils.center("", 4, ' ')); + assertEquals(" ab ", StringUtils.center("ab", 4, ' ')); + assertEquals("abcd", StringUtils.center("abcd", 2, ' ')); + assertEquals(" a ", StringUtils.center("a", 4, ' ')); + assertEquals(" a ", StringUtils.center("a", 5, ' ')); + assertEquals("xxaxx", StringUtils.center("a", 5, 'x')); + } + + @Test + public void testCenter_StringIntString() { + assertNull(StringUtils.center(null, 4, null)); + assertNull(StringUtils.center(null, -1, " ")); + assertNull(StringUtils.center(null, 4, " ")); + assertEquals(" ", StringUtils.center("", 4, " ")); + assertEquals("ab", StringUtils.center("ab", 0, " ")); + assertEquals("ab", StringUtils.center("ab", -1, " ")); + assertEquals("ab", StringUtils.center("ab", 1, " ")); + assertEquals(" ", StringUtils.center("", 4, " ")); + assertEquals(" ab ", StringUtils.center("ab", 4, " ")); + assertEquals("abcd", StringUtils.center("abcd", 2, " ")); + assertEquals(" a ", StringUtils.center("a", 4, " ")); + assertEquals("yayz", StringUtils.center("a", 4, "yz")); + assertEquals("yzyayzy", StringUtils.center("a", 7, "yz")); + assertEquals(" abc ", StringUtils.center("abc", 7, null)); + assertEquals(" abc ", StringUtils.center("abc", 7, "")); + } + + @Test + public void testChomp() { + + final String[][] chompCases = { + {FOO_UNCAP + "\r\n", FOO_UNCAP}, + {FOO_UNCAP + "\n", FOO_UNCAP}, + {FOO_UNCAP + "\r", FOO_UNCAP}, + {FOO_UNCAP + " \r", FOO_UNCAP + " "}, + {FOO_UNCAP, FOO_UNCAP}, + {FOO_UNCAP + "\n\n", FOO_UNCAP + "\n"}, + {FOO_UNCAP + "\r\n\r\n", FOO_UNCAP + "\r\n"}, + {"foo\nfoo", "foo\nfoo"}, + {"foo\n\rfoo", "foo\n\rfoo"}, + {"\n", ""}, + {"\r", ""}, + {"a", "a"}, + {"\r\n", ""}, + {"", ""}, + {null, null}, + {FOO_UNCAP + "\n\r", FOO_UNCAP + "\n"} + }; + for (final String[] chompCase : chompCases) { + final String original = chompCase[0]; + final String expectedResult = chompCase[1]; + assertEquals(expectedResult, StringUtils.chomp(original), "chomp(String) failed"); + } + + assertEquals("foo", StringUtils.chomp("foobar", "bar"), "chomp(String, String) failed"); + assertEquals("foobar", StringUtils.chomp("foobar", "baz"), "chomp(String, String) failed"); + assertEquals("foo", StringUtils.chomp("foo", "foooo"), "chomp(String, String) failed"); + assertEquals("foobar", StringUtils.chomp("foobar", ""), "chomp(String, String) failed"); + assertEquals("foobar", StringUtils.chomp("foobar", null), "chomp(String, String) failed"); + assertEquals("", StringUtils.chomp("", "foo"), "chomp(String, String) failed"); + assertEquals("", StringUtils.chomp("", null), "chomp(String, String) failed"); + assertEquals("", StringUtils.chomp("", ""), "chomp(String, String) failed"); + assertNull(StringUtils.chomp(null, "foo"), "chomp(String, String) failed"); + assertNull(StringUtils.chomp(null, null), "chomp(String, String) failed"); + assertNull(StringUtils.chomp(null, ""), "chomp(String, String) failed"); + assertEquals("", StringUtils.chomp("foo", "foo"), "chomp(String, String) failed"); + assertEquals(" ", StringUtils.chomp(" foo", "foo"), "chomp(String, String) failed"); + assertEquals("foo ", StringUtils.chomp("foo ", "foo"), "chomp(String, String) failed"); + } + + @Test + public void testChop() { + + final String[][] chopCases = { + {FOO_UNCAP + "\r\n", FOO_UNCAP}, + {FOO_UNCAP + "\n", FOO_UNCAP}, + {FOO_UNCAP + "\r", FOO_UNCAP}, + {FOO_UNCAP + " \r", FOO_UNCAP + " "}, + {"foo", "fo"}, + {"foo\nfoo", "foo\nfo"}, + {"\n", ""}, + {"\r", ""}, + {"\r\n", ""}, + {null, null}, + {"", ""}, + {"a", ""}, + }; + for (final String[] chopCase : chopCases) { + final String original = chopCase[0]; + final String expectedResult = chopCase[1]; + assertEquals(expectedResult, StringUtils.chop(original), "chop(String) failed"); + } + } + + @Test + public void testConstructor() { + assertNotNull(new StringUtils()); + final Constructor<?>[] cons = StringUtils.class.getDeclaredConstructors(); + assertEquals(1, cons.length); + assertTrue(Modifier.isPublic(cons[0].getModifiers())); + assertTrue(Modifier.isPublic(StringUtils.class.getModifiers())); + assertFalse(Modifier.isFinal(StringUtils.class.getModifiers())); + } + + @Test + public void testDefault_String() { + assertEquals("", StringUtils.defaultString(null)); + assertEquals("", StringUtils.defaultString("")); + assertEquals("abc", StringUtils.defaultString("abc")); + } + + @Test + public void testDefault_StringString() { + assertEquals("NULL", StringUtils.defaultString(null, "NULL")); + assertEquals("", StringUtils.defaultString("", "NULL")); + assertEquals("abc", StringUtils.defaultString("abc", "NULL")); + } + + @Test + public void testDefaultIfBlank_CharBuffers() { + assertEquals("NULL", StringUtils.defaultIfBlank(CharBuffer.wrap(""), CharBuffer.wrap("NULL")).toString()); + assertEquals("NULL", StringUtils.defaultIfBlank(CharBuffer.wrap(" "), CharBuffer.wrap("NULL")).toString()); + assertEquals("abc", StringUtils.defaultIfBlank(CharBuffer.wrap("abc"), CharBuffer.wrap("NULL")).toString()); + assertNull(StringUtils.defaultIfBlank(CharBuffer.wrap(""), (CharBuffer) null)); + // Tests compatibility for the API return type + final CharBuffer s = StringUtils.defaultIfBlank(CharBuffer.wrap("abc"), CharBuffer.wrap("NULL")); + assertEquals("abc", s.toString()); + } + + @Test + public void testDefaultIfBlank_StringBuffers() { + assertEquals("NULL", StringUtils.defaultIfBlank(new StringBuffer(""), new StringBuffer("NULL")).toString()); + assertEquals("NULL", StringUtils.defaultIfBlank(new StringBuffer(" "), new StringBuffer("NULL")).toString()); + assertEquals("abc", StringUtils.defaultIfBlank(new StringBuffer("abc"), new StringBuffer("NULL")).toString()); + assertNull(StringUtils.defaultIfBlank(new StringBuffer(""), (StringBuffer) null)); + // Tests compatibility for the API return type + final StringBuffer s = StringUtils.defaultIfBlank(new StringBuffer("abc"), new StringBuffer("NULL")); + assertEquals("abc", s.toString()); + } + + @Test + public void testDefaultIfBlank_StringBuilders() { + assertEquals("NULL", StringUtils.defaultIfBlank(new StringBuilder(""), new StringBuilder("NULL")).toString()); + assertEquals("NULL", StringUtils.defaultIfBlank(new StringBuilder(" "), new StringBuilder("NULL")).toString()); + assertEquals("abc", StringUtils.defaultIfBlank(new StringBuilder("abc"), new StringBuilder("NULL")).toString()); + assertNull(StringUtils.defaultIfBlank(new StringBuilder(""), (StringBuilder) null)); + // Tests compatibility for the API return type + final StringBuilder s = StringUtils.defaultIfBlank(new StringBuilder("abc"), new StringBuilder("NULL")); + assertEquals("abc", s.toString()); + } + + @Test + public void testDefaultIfBlank_StringString() { + assertEquals("NULL", StringUtils.defaultIfBlank(null, "NULL")); + assertEquals("NULL", StringUtils.defaultIfBlank("", "NULL")); + assertEquals("NULL", StringUtils.defaultIfBlank(" ", "NULL")); + assertEquals("abc", StringUtils.defaultIfBlank("abc", "NULL")); + assertNull(StringUtils.defaultIfBlank("", (String) null)); + // Tests compatibility for the API return type + final String s = StringUtils.defaultIfBlank("abc", "NULL"); + assertEquals("abc", s); + } + + + @Test + public void testGetIfBlank_StringStringSupplier() { + assertEquals("NULL", StringUtils.getIfBlank(null, () -> "NULL")); + assertEquals("NULL", StringUtils.getIfBlank("", () -> "NULL")); + assertEquals("NULL", StringUtils.getIfBlank(" ", () -> "NULL")); + assertEquals("abc", StringUtils.getIfBlank("abc", () -> "NULL")); + assertNull(StringUtils.getIfBlank("", () -> null)); + assertNull(StringUtils.defaultIfBlank("", (String) null)); + // Tests compatibility for the API return type + final String s = StringUtils.getIfBlank("abc", () -> "NULL"); + assertEquals("abc", s); + //Checking that default value supplied only on demand + final MutableInt numberOfCalls = new MutableInt(0); + final Supplier<String> countingDefaultSupplier = () -> { + numberOfCalls.increment(); + return "NULL"; + }; + StringUtils.getIfBlank("abc", countingDefaultSupplier); + assertEquals(0, numberOfCalls.getValue()); + StringUtils.getIfBlank("", countingDefaultSupplier); + assertEquals(1, numberOfCalls.getValue()); + StringUtils.getIfBlank(" ", countingDefaultSupplier); + assertEquals(2, numberOfCalls.getValue()); + StringUtils.getIfBlank(null, countingDefaultSupplier); + assertEquals(3, numberOfCalls.getValue()); + } + + @Test + public void testDefaultIfEmpty_CharBuffers() { + assertEquals("NULL", StringUtils.defaultIfEmpty(CharBuffer.wrap(""), CharBuffer.wrap("NULL")).toString()); + assertEquals("abc", StringUtils.defaultIfEmpty(CharBuffer.wrap("abc"), CharBuffer.wrap("NULL")).toString()); + assertNull(StringUtils.defaultIfEmpty(CharBuffer.wrap(""), (CharBuffer) null)); + // Tests compatibility for the API return type + final CharBuffer s = StringUtils.defaultIfEmpty(CharBuffer.wrap("abc"), CharBuffer.wrap("NULL")); + assertEquals("abc", s.toString()); + } + + + @Test + public void testDefaultIfEmpty_StringBuffers() { + assertEquals("NULL", StringUtils.defaultIfEmpty(new StringBuffer(""), new StringBuffer("NULL")).toString()); + assertEquals("abc", StringUtils.defaultIfEmpty(new StringBuffer("abc"), new StringBuffer("NULL")).toString()); + assertNull(StringUtils.defaultIfEmpty(new StringBuffer(""), (StringBuffer) null)); + // Tests compatibility for the API return type + final StringBuffer s = StringUtils.defaultIfEmpty(new StringBuffer("abc"), new StringBuffer("NULL")); + assertEquals("abc", s.toString()); + } + + @Test + public void testDefaultIfEmpty_StringBuilders() { + assertEquals("NULL", StringUtils.defaultIfEmpty(new StringBuilder(""), new StringBuilder("NULL")).toString()); + assertEquals("abc", StringUtils.defaultIfEmpty(new StringBuilder("abc"), new StringBuilder("NULL")).toString()); + assertNull(StringUtils.defaultIfEmpty(new StringBuilder(""), (StringBuilder) null)); + // Tests compatibility for the API return type + final StringBuilder s = StringUtils.defaultIfEmpty(new StringBuilder("abc"), new StringBuilder("NULL")); + assertEquals("abc", s.toString()); + } + + @Test + public void testDefaultIfEmpty_StringString() { + assertEquals("NULL", StringUtils.defaultIfEmpty(null, "NULL")); + assertEquals("NULL", StringUtils.defaultIfEmpty("", "NULL")); + assertEquals("abc", StringUtils.defaultIfEmpty("abc", "NULL")); + assertNull(StringUtils.getIfEmpty("", null)); + // Tests compatibility for the API return type + final String s = StringUtils.defaultIfEmpty("abc", "NULL"); + assertEquals("abc", s); + } + + @Test + public void testGetIfEmpty_StringStringSupplier() { + assertEquals("NULL", StringUtils.getIfEmpty((String) null, () -> "NULL")); + assertEquals("NULL", StringUtils.getIfEmpty("", () -> "NULL")); + assertEquals("abc", StringUtils.getIfEmpty("abc", () -> "NULL")); + assertNull(StringUtils.getIfEmpty("", () -> null)); + assertNull(StringUtils.defaultIfEmpty("", (String) null)); + // Tests compatibility for the API return type + final String s = StringUtils.getIfEmpty("abc", () -> "NULL"); + assertEquals("abc", s); + //Checking that default value supplied only on demand + final MutableInt numberOfCalls = new MutableInt(0); + final Supplier<String> countingDefaultSupplier = () -> { + numberOfCalls.increment(); + return "NULL"; + }; + StringUtils.getIfEmpty("abc", countingDefaultSupplier); + assertEquals(0, numberOfCalls.getValue()); + StringUtils.getIfEmpty("", countingDefaultSupplier); + assertEquals(1, numberOfCalls.getValue()); + StringUtils.getIfEmpty(null, countingDefaultSupplier); + assertEquals(2, numberOfCalls.getValue()); + } + + + @Test + public void testDeleteWhitespace_String() { + assertNull(StringUtils.deleteWhitespace(null)); + assertEquals("", StringUtils.deleteWhitespace("")); + assertEquals("", StringUtils.deleteWhitespace(" \u000C \t\t\u001F\n\n \u000B ")); + assertEquals("", StringUtils.deleteWhitespace(StringUtilsTest.WHITESPACE)); + assertEquals(StringUtilsTest.NON_WHITESPACE, StringUtils.deleteWhitespace(StringUtilsTest.NON_WHITESPACE)); + // Note: u-2007 and u-000A both cause problems in the source code + // it should ignore 2007 but delete 000A + assertEquals("\u00A0\u202F", StringUtils.deleteWhitespace(" \u00A0 \t\t\n\n \u202F ")); + assertEquals("\u00A0\u202F", StringUtils.deleteWhitespace("\u00A0\u202F")); + assertEquals("test", StringUtils.deleteWhitespace("\u000Bt \t\n\u0009e\rs\n\n \tt")); + } + + @Test + public void testDifference_StringString() { + assertNull(StringUtils.difference(null, null)); + assertEquals("", StringUtils.difference("", "")); + assertEquals("abc", StringUtils.difference("", "abc")); + assertEquals("", StringUtils.difference("abc", "")); + assertEquals("i am a robot", StringUtils.difference(null, "i am a robot")); + assertEquals("i am a machine", StringUtils.difference("i am a machine", null)); + assertEquals("robot", StringUtils.difference("i am a machine", "i am a robot")); + assertEquals("", StringUtils.difference("abc", "abc")); + assertEquals("you are a robot", StringUtils.difference("i am a robot", "you are a robot")); + } + + @Test + public void testDifferenceAt_StringArray() { + assertEquals(-1, StringUtils.indexOfDifference((String[]) null)); + assertEquals(-1, StringUtils.indexOfDifference()); + assertEquals(-1, StringUtils.indexOfDifference("abc")); + assertEquals(-1, StringUtils.indexOfDifference(null, null)); + assertEquals(-1, StringUtils.indexOfDifference("", "")); + assertEquals(0, StringUtils.indexOfDifference("", null)); + assertEquals(0, StringUtils.indexOfDifference("abc", null, null)); + assertEquals(0, StringUtils.indexOfDifference(null, null, "abc")); + assertEquals(0, StringUtils.indexOfDifference("", "abc")); + assertEquals(0, StringUtils.indexOfDifference("abc", "")); + assertEquals(-1, StringUtils.indexOfDifference("abc", "abc")); + assertEquals(1, StringUtils.indexOfDifference("abc", "a")); + assertEquals(2, StringUtils.indexOfDifference("ab", "abxyz")); + assertEquals(2, StringUtils.indexOfDifference("abcde", "abxyz")); + assertEquals(0, StringUtils.indexOfDifference("abcde", "xyz")); + assertEquals(0, StringUtils.indexOfDifference("xyz", "abcde")); + assertEquals(7, StringUtils.indexOfDifference("i am a machine", "i am a robot")); + } + + @Test + public void testDifferenceAt_StringString() { + assertEquals(-1, StringUtils.indexOfDifference(null, null)); + assertEquals(0, StringUtils.indexOfDifference(null, "i am a robot")); + assertEquals(-1, StringUtils.indexOfDifference("", "")); + assertEquals(0, StringUtils.indexOfDifference("", "abc")); + assertEquals(0, StringUtils.indexOfDifference("abc", "")); + assertEquals(0, StringUtils.indexOfDifference("i am a machine", null)); + assertEquals(7, StringUtils.indexOfDifference("i am a machine", "i am a robot")); + assertEquals(-1, StringUtils.indexOfDifference("foo", "foo")); + assertEquals(0, StringUtils.indexOfDifference("i am a robot", "you are a robot")); + } + + /** + * A sanity check for {@link StringUtils#EMPTY}. + */ + @Test + public void testEMPTY() { + assertNotNull(StringUtils.EMPTY); + assertEquals("", StringUtils.EMPTY); + assertEquals(0, StringUtils.EMPTY.length()); + } + + @Test + public void testEscapeSurrogatePairs() { + assertEquals("\uD83D\uDE30", StringEscapeUtils.escapeCsv("\uD83D\uDE30")); + // Examples from https://en.wikipedia.org/wiki/UTF-16 + assertEquals("\uD800\uDC00", StringEscapeUtils.escapeCsv("\uD800\uDC00")); + assertEquals("\uD834\uDD1E", StringEscapeUtils.escapeCsv("\uD834\uDD1E")); + assertEquals("\uDBFF\uDFFD", StringEscapeUtils.escapeCsv("\uDBFF\uDFFD")); + assertEquals("\uDBFF\uDFFD", StringEscapeUtils.escapeHtml3("\uDBFF\uDFFD")); + assertEquals("\uDBFF\uDFFD", StringEscapeUtils.escapeHtml4("\uDBFF\uDFFD")); + assertEquals("\uDBFF\uDFFD", StringEscapeUtils.escapeXml("\uDBFF\uDFFD")); + } + + /** + * Tests LANG-858. + */ + @Test + public void testEscapeSurrogatePairsLang858() { + assertEquals("\\uDBFF\\uDFFD", StringEscapeUtils.escapeJava("\uDBFF\uDFFD")); //fail LANG-858 + assertEquals("\\uDBFF\\uDFFD", StringEscapeUtils.escapeEcmaScript("\uDBFF\uDFFD")); //fail LANG-858 + } + + @Test + public void testGetBytes_Charset() { + assertEquals(ArrayUtils.EMPTY_BYTE_ARRAY, StringUtils.getBytes(null, (Charset) null)); + assertArrayEquals(StringUtils.EMPTY.getBytes(), StringUtils.getBytes(StringUtils.EMPTY, (Charset) null)); + assertArrayEquals(StringUtils.EMPTY.getBytes(StandardCharsets.US_ASCII), + StringUtils.getBytes(StringUtils.EMPTY, StandardCharsets.US_ASCII)); + } + + @Test + public void testGetBytes_String() throws UnsupportedEncodingException { + assertEquals(ArrayUtils.EMPTY_BYTE_ARRAY, StringUtils.getBytes(null, (String) null)); + assertArrayEquals(StringUtils.EMPTY.getBytes(), StringUtils.getBytes(StringUtils.EMPTY, (String) null)); + assertArrayEquals(StringUtils.EMPTY.getBytes(StandardCharsets.US_ASCII.name()), + StringUtils.getBytes(StringUtils.EMPTY, StandardCharsets.US_ASCII.name())); + } + + @Test + public void testGetCommonPrefix_StringArray() { + assertEquals("", StringUtils.getCommonPrefix((String[]) null)); + assertEquals("", StringUtils.getCommonPrefix()); + assertEquals("abc", StringUtils.getCommonPrefix("abc")); + assertEquals("", StringUtils.getCommonPrefix(null, null)); + assertEquals("", StringUtils.getCommonPrefix("", "")); + assertEquals("", StringUtils.getCommonPrefix("", null)); + assertEquals("", StringUtils.getCommonPrefix("abc", null, null)); + assertEquals("", StringUtils.getCommonPrefix(null, null, "abc")); + assertEquals("", StringUtils.getCommonPrefix("", "abc")); + assertEquals("", StringUtils.getCommonPrefix("abc", "")); + assertEquals("abc", StringUtils.getCommonPrefix("abc", "abc")); + assertEquals("a", StringUtils.getCommonPrefix("abc", "a")); + assertEquals("ab", StringUtils.getCommonPrefix("ab", "abxyz")); + assertEquals("ab", StringUtils.getCommonPrefix("abcde", "abxyz")); + assertEquals("", StringUtils.getCommonPrefix("abcde", "xyz")); + assertEquals("", StringUtils.getCommonPrefix("xyz", "abcde")); + assertEquals("i am a ", StringUtils.getCommonPrefix("i am a machine", "i am a robot")); + } + + @Test + public void testGetDigits() { + assertNull(StringUtils.getDigits(null)); + assertEquals("", StringUtils.getDigits("")); + assertEquals("", StringUtils.getDigits("abc")); + assertEquals("1000", StringUtils.getDigits("1000$")); + assertEquals("12345", StringUtils.getDigits("123password45")); + assertEquals("5417543010", StringUtils.getDigits("(541) 754-3010")); + assertEquals("\u0967\u0968\u0969", StringUtils.getDigits("\u0967\u0968\u0969")); + } + + @Test + public void testGetFuzzyDistance() { + assertEquals(0, StringUtils.getFuzzyDistance("", "", Locale.ENGLISH)); + assertEquals(0, StringUtils.getFuzzyDistance("Workshop", "b", Locale.ENGLISH)); + assertEquals(1, StringUtils.getFuzzyDistance("Room", "o", Locale.ENGLISH)); + assertEquals(1, StringUtils.getFuzzyDistance("Workshop", "w", Locale.ENGLISH)); + assertEquals(2, StringUtils.getFuzzyDistance("Workshop", "ws", Locale.ENGLISH)); + assertEquals(4, StringUtils.getFuzzyDistance("Workshop", "wo", Locale.ENGLISH)); + assertEquals(3, StringUtils.getFuzzyDistance("Apache Software Foundation", "asf", Locale.ENGLISH)); + } + + @Test + public void testGetFuzzyDistance_NullNullNull() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getFuzzyDistance(null, null, null)); + } + + @Test + public void testGetFuzzyDistance_NullStringLocale() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getFuzzyDistance(null, "clear", Locale.ENGLISH)); + } + + @Test + public void testGetFuzzyDistance_StringNullLoclae() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getFuzzyDistance(" ", null, Locale.ENGLISH)); + } + + @Test + public void testGetFuzzyDistance_StringStringNull() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getFuzzyDistance(" ", "clear", null)); + } + + @Test + public void testGetJaroWinklerDistance_NullNull() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getJaroWinklerDistance(null, null)); + } + + @Test + public void testGetJaroWinklerDistance_NullString() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getJaroWinklerDistance(null, "clear")); + } + + @Test + public void testGetJaroWinklerDistance_StringNull() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getJaroWinklerDistance(" ", null)); + } + + @Test + public void testGetJaroWinklerDistance_StringString() { + assertEquals(0.93d, StringUtils.getJaroWinklerDistance("frog", "fog")); + assertEquals(0.0d, StringUtils.getJaroWinklerDistance("fly", "ant")); + assertEquals(0.44d, StringUtils.getJaroWinklerDistance("elephant", "hippo")); + assertEquals(0.84d, StringUtils.getJaroWinklerDistance("dwayne", "duane")); + assertEquals(0.93d, StringUtils.getJaroWinklerDistance("ABC Corporation", "ABC Corp")); + assertEquals(0.95d, StringUtils.getJaroWinklerDistance("D N H Enterprises Inc", "D & H Enterprises, Inc.")); + assertEquals(0.92d, StringUtils.getJaroWinklerDistance("My Gym Children's Fitness Center", "My Gym. Childrens Fitness")); + assertEquals(0.88d, StringUtils.getJaroWinklerDistance("PENNSYLVANIA", "PENNCISYLVNIA")); + assertEquals(0.63d, StringUtils.getJaroWinklerDistance("Haus Ingeborg", "Ingeborg Esser")); + } + + @Test + public void testGetLevenshteinDistance_NullString() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getLevenshteinDistance("a", null)); + } + + @Test + public void testGetLevenshteinDistance_NullStringInt() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getLevenshteinDistance(null, "a", 0)); + } + + @Test + public void testGetLevenshteinDistance_StringNull() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getLevenshteinDistance(null, "a")); + } + + @Test + public void testGetLevenshteinDistance_StringNullInt() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getLevenshteinDistance("a", null, 0)); + } + + @Test + public void testGetLevenshteinDistance_StringString() { + assertEquals(0, StringUtils.getLevenshteinDistance("", "")); + assertEquals(1, StringUtils.getLevenshteinDistance("", "a")); + assertEquals(7, StringUtils.getLevenshteinDistance("aaapppp", "")); + assertEquals(1, StringUtils.getLevenshteinDistance("frog", "fog")); + assertEquals(3, StringUtils.getLevenshteinDistance("fly", "ant")); + assertEquals(7, StringUtils.getLevenshteinDistance("elephant", "hippo")); + assertEquals(7, StringUtils.getLevenshteinDistance("hippo", "elephant")); + assertEquals(8, StringUtils.getLevenshteinDistance("hippo", "zzzzzzzz")); + assertEquals(8, StringUtils.getLevenshteinDistance("zzzzzzzz", "hippo")); + assertEquals(1, StringUtils.getLevenshteinDistance("hello", "hallo")); + } + + @Test + public void testGetLevenshteinDistance_StringStringInt() { + // empty strings + assertEquals(0, StringUtils.getLevenshteinDistance("", "", 0)); + assertEquals(7, StringUtils.getLevenshteinDistance("aaapppp", "", 8)); + assertEquals(7, StringUtils.getLevenshteinDistance("aaapppp", "", 7)); + assertEquals(-1, StringUtils.getLevenshteinDistance("aaapppp", "", 6)); + + // unequal strings, zero threshold + assertEquals(-1, StringUtils.getLevenshteinDistance("b", "a", 0)); + assertEquals(-1, StringUtils.getLevenshteinDistance("a", "b", 0)); + + // equal strings + assertEquals(0, StringUtils.getLevenshteinDistance("aa", "aa", 0)); + assertEquals(0, StringUtils.getLevenshteinDistance("aa", "aa", 2)); + + // same length + assertEquals(-1, StringUtils.getLevenshteinDistance("aaa", "bbb", 2)); + assertEquals(3, StringUtils.getLevenshteinDistance("aaa", "bbb", 3)); + + // big stripe + assertEquals(6, StringUtils.getLevenshteinDistance("aaaaaa", "b", 10)); + + // distance less than threshold + assertEquals(7, StringUtils.getLevenshteinDistance("aaapppp", "b", 8)); + assertEquals(3, StringUtils.getLevenshteinDistance("a", "bbb", 4)); + + // distance equal to threshold + assertEquals(7, StringUtils.getLevenshteinDistance("aaapppp", "b", 7)); + assertEquals(3, StringUtils.getLevenshteinDistance("a", "bbb", 3)); + + // distance greater than threshold + assertEquals(-1, StringUtils.getLevenshteinDistance("a", "bbb", 2)); + assertEquals(-1, StringUtils.getLevenshteinDistance("bbb", "a", 2)); + assertEquals(-1, StringUtils.getLevenshteinDistance("aaapppp", "b", 6)); + + // stripe runs off array, strings not similar + assertEquals(-1, StringUtils.getLevenshteinDistance("a", "bbb", 1)); + assertEquals(-1, StringUtils.getLevenshteinDistance("bbb", "a", 1)); + + // stripe runs off array, strings are similar + assertEquals(-1, StringUtils.getLevenshteinDistance("12345", "1234567", 1)); + assertEquals(-1, StringUtils.getLevenshteinDistance("1234567", "12345", 1)); + + // old getLevenshteinDistance test cases + assertEquals(1, StringUtils.getLevenshteinDistance("frog", "fog", 1)); + assertEquals(3, StringUtils.getLevenshteinDistance("fly", "ant", 3)); + assertEquals(7, StringUtils.getLevenshteinDistance("elephant", "hippo", 7)); + assertEquals(-1, StringUtils.getLevenshteinDistance("elephant", "hippo", 6)); + assertEquals(7, StringUtils.getLevenshteinDistance("hippo", "elephant", 7)); + assertEquals(-1, StringUtils.getLevenshteinDistance("hippo", "elephant", 6)); + assertEquals(8, StringUtils.getLevenshteinDistance("hippo", "zzzzzzzz", 8)); + assertEquals(8, StringUtils.getLevenshteinDistance("zzzzzzzz", "hippo", 8)); + assertEquals(1, StringUtils.getLevenshteinDistance("hello", "hallo", 1)); + + assertEquals(1, StringUtils.getLevenshteinDistance("frog", "fog", Integer.MAX_VALUE)); + assertEquals(3, StringUtils.getLevenshteinDistance("fly", "ant", Integer.MAX_VALUE)); + assertEquals(7, StringUtils.getLevenshteinDistance("elephant", "hippo", Integer.MAX_VALUE)); + assertEquals(7, StringUtils.getLevenshteinDistance("hippo", "elephant", Integer.MAX_VALUE)); + assertEquals(8, StringUtils.getLevenshteinDistance("hippo", "zzzzzzzz", Integer.MAX_VALUE)); + assertEquals(8, StringUtils.getLevenshteinDistance("zzzzzzzz", "hippo", Integer.MAX_VALUE)); + assertEquals(1, StringUtils.getLevenshteinDistance("hello", "hallo", Integer.MAX_VALUE)); + } + + @Test + public void testGetLevenshteinDistance_StringStringNegativeInt() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.getLevenshteinDistance("a", "a", -1)); + } + + /** + * Test for {@link StringUtils#isAllLowerCase(CharSequence)}. + */ + @Test + public void testIsAllLowerCase() { + assertFalse(StringUtils.isAllLowerCase(null)); + assertFalse(StringUtils.isAllLowerCase(StringUtils.EMPTY)); + assertFalse(StringUtils.isAllLowerCase(" ")); + assertTrue(StringUtils.isAllLowerCase("abc")); + assertFalse(StringUtils.isAllLowerCase("abc ")); + assertFalse(StringUtils.isAllLowerCase("abc\n")); + assertFalse(StringUtils.isAllLowerCase("abC")); + assertFalse(StringUtils.isAllLowerCase("ab c")); + assertFalse(StringUtils.isAllLowerCase("ab1c")); + assertFalse(StringUtils.isAllLowerCase("ab/c")); + } + + /** + * Test for {@link StringUtils#isAllUpperCase(CharSequence)}. + */ + @Test + public void testIsAllUpperCase() { + assertFalse(StringUtils.isAllUpperCase(null)); + assertFalse(StringUtils.isAllUpperCase(StringUtils.EMPTY)); + assertFalse(StringUtils.isAllUpperCase(" ")); + assertTrue(StringUtils.isAllUpperCase("ABC")); + assertFalse(StringUtils.isAllUpperCase("ABC ")); + assertFalse(StringUtils.isAllUpperCase("ABC\n")); + assertFalse(StringUtils.isAllUpperCase("aBC")); + assertFalse(StringUtils.isAllUpperCase("A C")); + assertFalse(StringUtils.isAllUpperCase("A1C")); + assertFalse(StringUtils.isAllUpperCase("A/C")); + } + + /** + * Test for {@link StringUtils#isMixedCase(CharSequence)}. + */ + @Test + public void testIsMixedCase() { + assertFalse(StringUtils.isMixedCase(null)); + assertFalse(StringUtils.isMixedCase(StringUtils.EMPTY)); + assertFalse(StringUtils.isMixedCase(" ")); + assertFalse(StringUtils.isMixedCase("A")); + assertFalse(StringUtils.isMixedCase("a")); + assertFalse(StringUtils.isMixedCase("/")); + assertFalse(StringUtils.isMixedCase("A/")); + assertFalse(StringUtils.isMixedCase("/b")); + assertFalse(StringUtils.isMixedCase("abc")); + assertFalse(StringUtils.isMixedCase("ABC")); + assertTrue(StringUtils.isMixedCase("aBc")); + assertTrue(StringUtils.isMixedCase("aBc ")); + assertTrue(StringUtils.isMixedCase("A c")); + assertTrue(StringUtils.isMixedCase("aBc\n")); + assertTrue(StringUtils.isMixedCase("A1c")); + assertTrue(StringUtils.isMixedCase("a/C")); + } + + @Test + public void testJoin_ArrayCharSeparator() { + assertNull(StringUtils.join((Object[]) null, ',')); + assertEquals(TEXT_LIST_CHAR, StringUtils.join(ARRAY_LIST, SEPARATOR_CHAR)); + assertEquals("", StringUtils.join(EMPTY_ARRAY_LIST, SEPARATOR_CHAR)); + assertEquals(";;foo", StringUtils.join(MIXED_ARRAY_LIST, SEPARATOR_CHAR)); + assertEquals("foo;2", StringUtils.join(MIXED_TYPE_LIST, SEPARATOR_CHAR)); + + assertNull(StringUtils.join((Object[]) null, ',', 0, 1)); + assertEquals("/", StringUtils.join(MIXED_ARRAY_LIST, '/', 0, MIXED_ARRAY_LIST.length - 1)); + assertEquals("foo", StringUtils.join(MIXED_TYPE_LIST, '/', 0, 1)); + assertEquals("null", StringUtils.join(NULL_TO_STRING_LIST, '/', 0, 1)); + assertEquals("foo/2", StringUtils.join(MIXED_TYPE_LIST, '/', 0, 2)); + assertEquals("2", StringUtils.join(MIXED_TYPE_LIST, '/', 1, 2)); + assertEquals("", StringUtils.join(MIXED_TYPE_LIST, '/', 2, 1)); + } + + @Test + public void testJoin_ArrayOfBytes() { + assertNull(StringUtils.join((byte[]) null, ',')); + assertEquals("1;2", StringUtils.join(BYTE_PRIM_LIST, SEPARATOR_CHAR)); + assertEquals("2", StringUtils.join(BYTE_PRIM_LIST, SEPARATOR_CHAR, 1, 2)); + assertNull(StringUtils.join((byte[]) null, SEPARATOR_CHAR, 0, 1)); + assertEquals(StringUtils.EMPTY, StringUtils.join(BYTE_PRIM_LIST, SEPARATOR_CHAR, 0, 0)); + assertEquals(StringUtils.EMPTY, StringUtils.join(BYTE_PRIM_LIST, SEPARATOR_CHAR, 1, 0)); + } + + + @Test + public void testJoin_ArrayOfBooleans() { + assertNull(StringUtils.join((boolean[]) null, COMMA_SEPARATOR_CHAR)); + assertEquals("false;false", StringUtils.join(ARRAY_FALSE_FALSE, SEPARATOR_CHAR)); + assertEquals("", StringUtils.join(EMPTY, SEPARATOR_CHAR)); + assertEquals("false,true,false", StringUtils.join(ARRAY_FALSE_TRUE_FALSE, COMMA_SEPARATOR_CHAR)); + assertEquals("true", StringUtils.join(ARRAY_FALSE_TRUE, SEPARATOR_CHAR, 1, 2)); + assertNull(StringUtils.join((boolean[]) null, SEPARATOR_CHAR, 0, 1)); + assertEquals(StringUtils.EMPTY, StringUtils.join(ARRAY_FALSE_FALSE, SEPARATOR_CHAR, 0, 0)); + assertEquals(StringUtils.EMPTY, StringUtils.join(ARRAY_FALSE_TRUE_FALSE, SEPARATOR_CHAR, 1, 0)); + } + + @Test + public void testJoin_ArrayOfChars() { + assertNull(StringUtils.join((char[]) null, ',')); + assertEquals("1;2", StringUtils.join(CHAR_PRIM_LIST, SEPARATOR_CHAR)); + assertEquals("2", StringUtils.join(CHAR_PRIM_LIST, SEPARATOR_CHAR, 1, 2)); + assertNull(StringUtils.join((char[]) null, SEPARATOR_CHAR, 0, 1)); + assertEquals(StringUtils.EMPTY, StringUtils.join(CHAR_PRIM_LIST, SEPARATOR_CHAR, 0, 0)); + assertEquals(StringUtils.EMPTY, StringUtils.join(CHAR_PRIM_LIST, SEPARATOR_CHAR, 1, 0)); + } + + @Test + public void testJoin_ArrayOfDoubles() { + assertNull(StringUtils.join((double[]) null, ',')); + assertEquals("1.0;2.0", StringUtils.join(DOUBLE_PRIM_LIST, SEPARATOR_CHAR)); + assertEquals("2.0", StringUtils.join(DOUBLE_PRIM_LIST, SEPARATOR_CHAR, 1, 2)); + assertNull(StringUtils.join((double[]) null, SEPARATOR_CHAR, 0, 1)); + assertEquals(StringUtils.EMPTY, StringUtils.join(DOUBLE_PRIM_LIST, SEPARATOR_CHAR, 0, 0)); + assertEquals(StringUtils.EMPTY, StringUtils.join(DOUBLE_PRIM_LIST, SEPARATOR_CHAR, 1, 0)); + } + + @Test + public void testJoin_ArrayOfFloats() { + assertNull(StringUtils.join((float[]) null, ',')); + assertEquals("1.0;2.0", StringUtils.join(FLOAT_PRIM_LIST, SEPARATOR_CHAR)); + assertEquals("2.0", StringUtils.join(FLOAT_PRIM_LIST, SEPARATOR_CHAR, 1, 2)); + assertNull(StringUtils.join((float[]) null, SEPARATOR_CHAR, 0, 1)); + assertEquals(StringUtils.EMPTY, StringUtils.join(FLOAT_PRIM_LIST, SEPARATOR_CHAR, 0, 0)); + assertEquals(StringUtils.EMPTY, StringUtils.join(FLOAT_PRIM_LIST, SEPARATOR_CHAR, 1, 0)); + } + + @Test + public void testJoin_ArrayOfInts() { + assertNull(StringUtils.join((int[]) null, ',')); + assertEquals("1;2", StringUtils.join(INT_PRIM_LIST, SEPARATOR_CHAR)); + assertEquals("2", StringUtils.join(INT_PRIM_LIST, SEPARATOR_CHAR, 1, 2)); + assertNull(StringUtils.join((int[]) null, SEPARATOR_CHAR, 0, 1)); + assertEquals(StringUtils.EMPTY, StringUtils.join(INT_PRIM_LIST, SEPARATOR_CHAR, 0, 0)); + assertEquals(StringUtils.EMPTY, StringUtils.join(INT_PRIM_LIST, SEPARATOR_CHAR, 1, 0)); + } + + @Test + public void testJoin_ArrayOfLongs() { + assertNull(StringUtils.join((long[]) null, ',')); + assertEquals("1;2", StringUtils.join(LONG_PRIM_LIST, SEPARATOR_CHAR)); + assertEquals("2", StringUtils.join(LONG_PRIM_LIST, SEPARATOR_CHAR, 1, 2)); + assertNull(StringUtils.join((long[]) null, SEPARATOR_CHAR, 0, 1)); + assertEquals(StringUtils.EMPTY, StringUtils.join(LONG_PRIM_LIST, SEPARATOR_CHAR, 0, 0)); + assertEquals(StringUtils.EMPTY, StringUtils.join(LONG_PRIM_LIST, SEPARATOR_CHAR, 1, 0)); + } + + @Test + public void testJoin_ArrayOfShorts() { + assertNull(StringUtils.join((short[]) null, ',')); + assertEquals("1;2", StringUtils.join(SHORT_PRIM_LIST, SEPARATOR_CHAR)); + assertEquals("2", StringUtils.join(SHORT_PRIM_LIST, SEPARATOR_CHAR, 1, 2)); + assertNull(StringUtils.join((short[]) null, SEPARATOR_CHAR, 0, 1)); + assertEquals(StringUtils.EMPTY, StringUtils.join(SHORT_PRIM_LIST, SEPARATOR_CHAR, 0, 0)); + assertEquals(StringUtils.EMPTY, StringUtils.join(SHORT_PRIM_LIST, SEPARATOR_CHAR, 1, 0)); + } + + @Test + public void testJoin_ArrayString_EmptyDelimiter() { + assertNull(StringUtils.join((Object[]) null, null)); + assertEquals(TEXT_LIST_NOSEP, StringUtils.join(ARRAY_LIST, null)); + assertEquals(TEXT_LIST_NOSEP, StringUtils.join(ARRAY_LIST, "")); + + assertEquals("", StringUtils.join(NULL_ARRAY_LIST, null)); + + assertEquals("", StringUtils.join(EMPTY_ARRAY_LIST, null)); + assertEquals("", StringUtils.join(EMPTY_ARRAY_LIST, "")); + + assertEquals("", StringUtils.join(MIXED_ARRAY_LIST, "", 0, MIXED_ARRAY_LIST.length - 1)); + } + + @ParameterizedTest + @ValueSource(strings = {",", ";", Supplementary.CharU20000, Supplementary.CharU20001}) + public void testJoin_ArrayString_NonEmptyDelimiter(final String delimiter) { + assertEquals("", StringUtils.join(EMPTY_ARRAY_LIST, delimiter)); + + assertEquals(String.join(delimiter, ARRAY_LIST), StringUtils.join(ARRAY_LIST, delimiter)); + assertEquals(delimiter + delimiter + "foo", StringUtils.join(MIXED_ARRAY_LIST, delimiter)); + assertEquals(String.join(delimiter, "foo", "2"), StringUtils.join(MIXED_TYPE_LIST, delimiter)); + + assertEquals(delimiter, StringUtils.join(MIXED_ARRAY_LIST, delimiter, 0, MIXED_ARRAY_LIST.length - 1)); + assertEquals("foo", StringUtils.join(MIXED_TYPE_LIST, delimiter, 0, 1)); + assertEquals(String.join(delimiter, "foo", "2"), StringUtils.join(MIXED_TYPE_LIST, delimiter, 0, 2)); + assertEquals("2", StringUtils.join(MIXED_TYPE_LIST, delimiter, 1, 2)); + assertEquals("", StringUtils.join(MIXED_TYPE_LIST, delimiter, 2, 1)); + } + + @Test + public void testJoin_IterableChar() { + assertNull(StringUtils.join((Iterable<?>) null, ',')); + assertEquals(TEXT_LIST_CHAR, StringUtils.join(Arrays.asList(ARRAY_LIST), SEPARATOR_CHAR)); + assertEquals("", StringUtils.join(Arrays.asList(NULL_ARRAY_LIST), SEPARATOR_CHAR)); + assertEquals("", StringUtils.join(Arrays.asList(EMPTY_ARRAY_LIST), SEPARATOR_CHAR)); + assertEquals("foo", StringUtils.join(Collections.singleton("foo"), 'x')); + } + + @Test + public void testJoin_IterableString() { + assertNull(StringUtils.join((Iterable<?>) null, null)); + assertEquals(TEXT_LIST_NOSEP, StringUtils.join(Arrays.asList(ARRAY_LIST), null)); + assertEquals(TEXT_LIST_NOSEP, StringUtils.join(Arrays.asList(ARRAY_LIST), "")); + assertEquals("foo", StringUtils.join(Collections.singleton("foo"), "x")); + assertEquals("foo", StringUtils.join(Collections.singleton("foo"), null)); + + assertEquals("", StringUtils.join(Arrays.asList(NULL_ARRAY_LIST), null)); + + assertEquals("", StringUtils.join(Arrays.asList(EMPTY_ARRAY_LIST), null)); + assertEquals("", StringUtils.join(Arrays.asList(EMPTY_ARRAY_LIST), "")); + assertEquals("", StringUtils.join(Arrays.asList(EMPTY_ARRAY_LIST), SEPARATOR)); + + assertEquals(TEXT_LIST, StringUtils.join(Arrays.asList(ARRAY_LIST), SEPARATOR)); + } + + @Test + public void testJoin_IteratorChar() { + assertNull(StringUtils.join((Iterator<?>) null, ',')); + assertEquals(TEXT_LIST_CHAR, StringUtils.join(Arrays.asList(ARRAY_LIST).iterator(), SEPARATOR_CHAR)); + assertEquals("", StringUtils.join(Arrays.asList(NULL_ARRAY_LIST).iterator(), SEPARATOR_CHAR)); + assertEquals("", StringUtils.join(Arrays.asList(EMPTY_ARRAY_LIST).iterator(), SEPARATOR_CHAR)); + assertEquals("foo", StringUtils.join(Collections.singleton("foo").iterator(), 'x')); + assertEquals("null", StringUtils.join(Arrays.asList(NULL_TO_STRING_LIST).iterator(), SEPARATOR_CHAR)); + } + + @Test + public void testJoin_IteratorString() { + assertNull(StringUtils.join((Iterator<?>) null, null)); + assertEquals(TEXT_LIST_NOSEP, StringUtils.join(Arrays.asList(ARRAY_LIST).iterator(), null)); + assertEquals(TEXT_LIST_NOSEP, StringUtils.join(Arrays.asList(ARRAY_LIST).iterator(), "")); + assertEquals("foo", StringUtils.join(Collections.singleton("foo").iterator(), "x")); + assertEquals("foo", StringUtils.join(Collections.singleton("foo").iterator(), null)); + + assertEquals("", StringUtils.join(Arrays.asList(NULL_ARRAY_LIST).iterator(), null)); + + assertEquals("", StringUtils.join(Arrays.asList(EMPTY_ARRAY_LIST).iterator(), null)); + assertEquals("", StringUtils.join(Arrays.asList(EMPTY_ARRAY_LIST).iterator(), "")); + assertEquals("", StringUtils.join(Arrays.asList(EMPTY_ARRAY_LIST).iterator(), SEPARATOR)); + + assertEquals(TEXT_LIST, StringUtils.join(Arrays.asList(ARRAY_LIST).iterator(), SEPARATOR)); + + assertEquals("null", StringUtils.join(Arrays.asList(NULL_TO_STRING_LIST).iterator(), SEPARATOR)); + } + + @Test + public void testJoin_List_EmptyDelimiter() { + assertNull(StringUtils.join((List<String>) null, null)); + assertEquals(TEXT_LIST_NOSEP, StringUtils.join(STRING_LIST, null)); + assertEquals(TEXT_LIST_NOSEP, StringUtils.join(STRING_LIST, "")); + + assertEquals("", StringUtils.join(NULL_STRING_LIST, null)); + + assertEquals("", StringUtils.join(EMPTY_STRING_LIST, null)); + assertEquals("", StringUtils.join(EMPTY_STRING_LIST, "")); + + assertEquals("", StringUtils.join(MIXED_STRING_LIST, "", 0, MIXED_STRING_LIST.size()- 1)); + } + + @Test + public void testJoin_List_CharDelimiter() { + assertEquals("/", StringUtils.join(MIXED_STRING_LIST, '/', 0, MIXED_STRING_LIST.size() - 1)); + assertEquals("foo", StringUtils.join(MIXED_TYPE_OBJECT_LIST, '/', 0, 1)); + assertEquals("foo/2", StringUtils.join(MIXED_TYPE_OBJECT_LIST, '/', 0, 2)); + assertEquals("2", StringUtils.join(MIXED_TYPE_OBJECT_LIST, '/', 1, 2)); + assertEquals("", StringUtils.join(MIXED_TYPE_OBJECT_LIST, '/', 2, 1)); + assertNull(null, StringUtils.join((List<?>) null, '/', 0, 1)); + } + + @ParameterizedTest + @ValueSource(strings = {",", ";", Supplementary.CharU20000, Supplementary.CharU20001}) + public void testJoin_List_NonEmptyDelimiter(final String delimiter) { + assertEquals("", StringUtils.join(EMPTY_STRING_LIST, delimiter)); + + assertEquals(String.join(delimiter, STRING_LIST), StringUtils.join(STRING_LIST, delimiter)); + assertEquals(delimiter + delimiter + "foo", StringUtils.join(MIXED_STRING_LIST, delimiter)); + assertEquals(String.join(delimiter, "foo", "2"), StringUtils.join(MIXED_TYPE_OBJECT_LIST, delimiter)); + + assertEquals(delimiter, StringUtils.join(MIXED_STRING_LIST, delimiter, 0, MIXED_STRING_LIST.size() - 1)); + assertEquals("foo", StringUtils.join(MIXED_TYPE_OBJECT_LIST, delimiter, 0, 1)); + assertEquals(String.join(delimiter, "foo", "2"), StringUtils.join(MIXED_TYPE_OBJECT_LIST, delimiter, 0, 2)); + assertEquals("2", StringUtils.join(MIXED_TYPE_OBJECT_LIST, delimiter, 1, 2)); + assertEquals("", StringUtils.join(MIXED_TYPE_OBJECT_LIST, delimiter, 2, 1)); + assertNull(null, StringUtils.join((List<?>) null, delimiter, 0, 1)); + } + + @Test + public void testJoin_Objectarray() { +// assertNull(StringUtils.join(null)); // generates warning + assertNull(StringUtils.join((Object[]) null)); // equivalent explicit cast + // test additional varargs calls + assertEquals("", StringUtils.join()); // empty array + assertEquals("", StringUtils.join((Object) null)); // => new Object[]{null} + + assertEquals("", StringUtils.join(EMPTY_ARRAY_LIST)); + assertEquals("", StringUtils.join(NULL_ARRAY_LIST)); + assertEquals("null", StringUtils.join(NULL_TO_STRING_LIST)); + assertEquals("abc", StringUtils.join("a", "b", "c")); + assertEquals("a", StringUtils.join(null, "a", "")); + assertEquals("foo", StringUtils.join(MIXED_ARRAY_LIST)); + assertEquals("foo2", StringUtils.join(MIXED_TYPE_LIST)); + } + + @Disabled + @Test + public void testLang1593() { + final int[] arr = {1, 2, 3, 4, 5, 6, 7}; + final String expected = StringUtils.join(arr, '-'); + final String actual = StringUtils.join(arr, "-"); + assertEquals(expected, actual); + } + + @Test + public void testJoin_Objects() { + assertEquals("abc", StringUtils.join("a", "b", "c")); + assertEquals("a", StringUtils.join(null, "", "a")); + assertNull(StringUtils.join((Object[]) null)); + } + + @ParameterizedTest + @ValueSource(strings = {",", ";", Supplementary.CharU20000, Supplementary.CharU20001}) + public void testJoinWith(final String delimiter) { + assertEquals("", StringUtils.joinWith(delimiter)); // empty array + assertEquals("", StringUtils.joinWith(delimiter, (Object[]) NULL_ARRAY_LIST)); + assertEquals("null", StringUtils.joinWith(delimiter, NULL_TO_STRING_LIST)); // toString method prints 'null' + + assertEquals(String.join(delimiter, "a", "b", "c"), StringUtils.joinWith(delimiter, "a", "b", "c")); + assertEquals(String.join(delimiter, "", "a", ""), StringUtils.joinWith(delimiter, null, "a", "")); + assertEquals(String.join(delimiter, "", "a", ""), StringUtils.joinWith(delimiter, "", "a", "")); + + assertEquals("ab", StringUtils.joinWith(null, "a", "b")); + } + + @Test + public void testJoinWithThrowsException() { + assertThrows(IllegalArgumentException.class, () -> StringUtils.joinWith(",", (Object[]) null)); + } + + @Test + public void testLang623() { + assertEquals("t", StringUtils.replaceChars("\u00DE", '\u00DE', 't')); + assertEquals("t", StringUtils.replaceChars("\u00FE", '\u00FE', 't')); + } + + @Test + public void testLANG666() { + assertEquals("12", StringUtils.stripEnd("120.00", ".0")); + assertEquals("121", StringUtils.stripEnd("121.00", ".0")); + } + + @Test + public void testLeftPad_StringInt() { + assertNull(StringUtils.leftPad(null, 5)); + assertEquals(" ", StringUtils.leftPad("", 5)); + assertEquals(" abc", StringUtils.leftPad("abc", 5)); + assertEquals("abc", StringUtils.leftPad("abc", 2)); + } + + @Test + public void testLeftPad_StringIntChar() { + assertNull(StringUtils.leftPad(null, 5, ' ')); + assertEquals(" ", StringUtils.leftPad("", 5, ' ')); + assertEquals(" abc", StringUtils.leftPad("abc", 5, ' ')); + assertEquals("xxabc", StringUtils.leftPad("abc", 5, 'x')); + assertEquals("\uffff\uffffabc", StringUtils.leftPad("abc", 5, '\uffff')); + assertEquals("abc", StringUtils.leftPad("abc", 2, ' ')); + final String str = StringUtils.leftPad("aaa", 10000, 'a'); // bigger than pad length + assertEquals(10000, str.length()); + assertTrue(StringUtils.containsOnly(str, 'a')); + } + + @Test + public void testLeftPad_StringIntString() { + assertNull(StringUtils.leftPad(null, 5, "-+")); + assertNull(StringUtils.leftPad(null, 5, null)); + assertEquals(" ", StringUtils.leftPad("", 5, " ")); + assertEquals("-+-+abc", StringUtils.leftPad("abc", 7, "-+")); + assertEquals("-+~abc", StringUtils.leftPad("abc", 6, "-+~")); + assertEquals("-+abc", StringUtils.leftPad("abc", 5, "-+~")); + assertEquals("abc", StringUtils.leftPad("abc", 2, " ")); + assertEquals("abc", StringUtils.leftPad("abc", -1, " ")); + assertEquals(" abc", StringUtils.leftPad("abc", 5, null)); + assertEquals(" abc", StringUtils.leftPad("abc", 5, "")); + } + + @Test + public void testLength_CharBuffer() { + assertEquals(0, StringUtils.length(CharBuffer.wrap(""))); + assertEquals(1, StringUtils.length(CharBuffer.wrap("A"))); + assertEquals(1, StringUtils.length(CharBuffer.wrap(" "))); + assertEquals(8, StringUtils.length(CharBuffer.wrap("ABCDEFGH"))); + } + + @Test + public void testLengthString() { + assertEquals(0, StringUtils.length(null)); + assertEquals(0, StringUtils.length("")); + assertEquals(0, StringUtils.length(StringUtils.EMPTY)); + assertEquals(1, StringUtils.length("A")); + assertEquals(1, StringUtils.length(" ")); + assertEquals(8, StringUtils.length("ABCDEFGH")); + } + + @Test + public void testLengthStringBuffer() { + assertEquals(0, StringUtils.length(new StringBuffer(""))); + assertEquals(0, StringUtils.length(new StringBuffer(StringUtils.EMPTY))); + assertEquals(1, StringUtils.length(new StringBuffer("A"))); + assertEquals(1, StringUtils.length(new StringBuffer(" "))); + assertEquals(8, StringUtils.length(new StringBuffer("ABCDEFGH"))); + } + + @Test + public void testLengthStringBuilder() { + assertEquals(0, StringUtils.length(new StringBuilder(""))); + assertEquals(0, StringUtils.length(new StringBuilder(StringUtils.EMPTY))); + assertEquals(1, StringUtils.length(new StringBuilder("A"))); + assertEquals(1, StringUtils.length(new StringBuilder(" "))); + assertEquals(8, StringUtils.length(new StringBuilder("ABCDEFGH"))); + } + + @Test + public void testLowerCase() { + assertNull(StringUtils.lowerCase(null)); + assertNull(StringUtils.lowerCase(null, Locale.ENGLISH)); + assertEquals("foo test thing", StringUtils.lowerCase("fOo test THING"), "lowerCase(String) failed"); + assertEquals("", StringUtils.lowerCase(""), "lowerCase(empty-string) failed"); + assertEquals("foo test thing", StringUtils.lowerCase("fOo test THING", Locale.ENGLISH), + "lowerCase(String, Locale) failed"); + assertEquals("", StringUtils.lowerCase("", Locale.ENGLISH), "lowerCase(empty-string, Locale) failed"); + } + + @Test + public void testNormalizeSpace() { + // Java says a non-breaking whitespace is not a whitespace. + assertFalse(Character.isWhitespace('\u00A0')); + // + assertNull(StringUtils.normalizeSpace(null)); + assertEquals("", StringUtils.normalizeSpace("")); + assertEquals("", StringUtils.normalizeSpace(" ")); + assertEquals("", StringUtils.normalizeSpace("\t")); + assertEquals("", StringUtils.normalizeSpace("\n")); + assertEquals("", StringUtils.normalizeSpace("\u0009")); + assertEquals("", StringUtils.normalizeSpace("\u000B")); + assertEquals("", StringUtils.normalizeSpace("\u000C")); + assertEquals("", StringUtils.normalizeSpace("\u001C")); + assertEquals("", StringUtils.normalizeSpace("\u001D")); + assertEquals("", StringUtils.normalizeSpace("\u001E")); + assertEquals("", StringUtils.normalizeSpace("\u001F")); + assertEquals("", StringUtils.normalizeSpace("\f")); + assertEquals("", StringUtils.normalizeSpace("\r")); + assertEquals("a", StringUtils.normalizeSpace(" a ")); + assertEquals("a b c", StringUtils.normalizeSpace(" a b c ")); + assertEquals("a b c", StringUtils.normalizeSpace("a\t\f\r b\u000B c\n")); + assertEquals("a b c", StringUtils.normalizeSpace("a\t\f\r " + HARD_SPACE + HARD_SPACE + "b\u000B c\n")); + assertEquals("b", StringUtils.normalizeSpace("\u0000b")); + assertEquals("b", StringUtils.normalizeSpace("b\u0000")); + } + + @Test + public void testOverlay_StringStringIntInt() { + assertNull(StringUtils.overlay(null, null, 2, 4)); + assertNull(StringUtils.overlay(null, null, -2, -4)); + + assertEquals("", StringUtils.overlay("", null, 0, 0)); + assertEquals("", StringUtils.overlay("", "", 0, 0)); + assertEquals("zzzz", StringUtils.overlay("", "zzzz", 0, 0)); + assertEquals("zzzz", StringUtils.overlay("", "zzzz", 2, 4)); + assertEquals("zzzz", StringUtils.overlay("", "zzzz", -2, -4)); + + assertEquals("abef", StringUtils.overlay("abcdef", null, 2, 4)); + assertEquals("abef", StringUtils.overlay("abcdef", null, 4, 2)); + assertEquals("abef", StringUtils.overlay("abcdef", "", 2, 4)); + assertEquals("abef", StringUtils.overlay("abcdef", "", 4, 2)); + assertEquals("abzzzzef", StringUtils.overlay("abcdef", "zzzz", 2, 4)); + assertEquals("abzzzzef", StringUtils.overlay("abcdef", "zzzz", 4, 2)); + + assertEquals("zzzzef", StringUtils.overlay("abcdef", "zzzz", -1, 4)); + assertEquals("zzzzef", StringUtils.overlay("abcdef", "zzzz", 4, -1)); + assertEquals("zzzzabcdef", StringUtils.overlay("abcdef", "zzzz", -2, -1)); + assertEquals("zzzzabcdef", StringUtils.overlay("abcdef", "zzzz", -1, -2)); + assertEquals("abcdzzzz", StringUtils.overlay("abcdef", "zzzz", 4, 10)); + assertEquals("abcdzzzz", StringUtils.overlay("abcdef", "zzzz", 10, 4)); + assertEquals("abcdefzzzz", StringUtils.overlay("abcdef", "zzzz", 8, 10)); + assertEquals("abcdefzzzz", StringUtils.overlay("abcdef", "zzzz", 10, 8)); + } + + /** + * Tests {@code prependIfMissing}. + */ + @Test + public void testPrependIfMissing() { + assertNull(StringUtils.prependIfMissing(null, null), "prependIfMissing(null,null)"); + assertEquals("abc", StringUtils.prependIfMissing("abc", null), "prependIfMissing(abc,null)"); + assertEquals("xyz", StringUtils.prependIfMissing("", "xyz"), "prependIfMissing(\"\",xyz)"); + assertEquals("xyzabc", StringUtils.prependIfMissing("abc", "xyz"), "prependIfMissing(abc,xyz)"); + assertEquals("xyzabc", StringUtils.prependIfMissing("xyzabc", "xyz"), "prependIfMissing(xyzabc,xyz)"); + assertEquals("xyzXYZabc", StringUtils.prependIfMissing("XYZabc", "xyz"), "prependIfMissing(XYZabc,xyz)"); + + assertNull(StringUtils.prependIfMissing(null, null, (CharSequence[]) null), "prependIfMissing(null,null null)"); + assertEquals("abc", StringUtils.prependIfMissing("abc", null, (CharSequence[]) null), "prependIfMissing(abc,null,null)"); + assertEquals("xyz", StringUtils.prependIfMissing("", "xyz", (CharSequence[]) null), "prependIfMissing(\"\",xyz,null)"); + assertEquals("xyzabc", StringUtils.prependIfMissing("abc", "xyz", null), "prependIfMissing(abc,xyz,{null})"); + assertEquals("abc", StringUtils.prependIfMissing("abc", "xyz", ""), "prependIfMissing(abc,xyz,\"\")"); + assertEquals("xyzabc", StringUtils.prependIfMissing("abc", "xyz", "mno"), "prependIfMissing(abc,xyz,mno)"); + assertEquals("xyzabc", StringUtils.prependIfMissing("xyzabc", "xyz", "mno"), "prependIfMissing(xyzabc,xyz,mno)"); + assertEquals("mnoabc", StringUtils.prependIfMissing("mnoabc", "xyz", "mno"), "prependIfMissing(mnoabc,xyz,mno)"); + assertEquals("xyzXYZabc", StringUtils.prependIfMissing("XYZabc", "xyz", "mno"), "prependIfMissing(XYZabc,xyz,mno)"); + assertEquals("xyzMNOabc", StringUtils.prependIfMissing("MNOabc", "xyz", "mno"), "prependIfMissing(MNOabc,xyz,mno)"); + } + + /** + * Tests {@code prependIfMissingIgnoreCase}. + */ + @Test + public void testPrependIfMissingIgnoreCase() { + assertNull(StringUtils.prependIfMissingIgnoreCase(null, null), "prependIfMissingIgnoreCase(null,null)"); + assertEquals("abc", StringUtils.prependIfMissingIgnoreCase("abc", null), "prependIfMissingIgnoreCase(abc,null)"); + assertEquals("xyz", StringUtils.prependIfMissingIgnoreCase("", "xyz"), "prependIfMissingIgnoreCase(\"\",xyz)"); + assertEquals("xyzabc", StringUtils.prependIfMissingIgnoreCase("abc", "xyz"), "prependIfMissingIgnoreCase(abc,xyz)"); + assertEquals("xyzabc", StringUtils.prependIfMissingIgnoreCase("xyzabc", "xyz"), "prependIfMissingIgnoreCase(xyzabc,xyz)"); + assertEquals("XYZabc", StringUtils.prependIfMissingIgnoreCase("XYZabc", "xyz"), "prependIfMissingIgnoreCase(XYZabc,xyz)"); + + assertNull(StringUtils.prependIfMissingIgnoreCase(null, null, (CharSequence[]) null), "prependIfMissingIgnoreCase(null,null null)"); + assertEquals("abc", StringUtils.prependIfMissingIgnoreCase("abc", null, (CharSequence[]) null), "prependIfMissingIgnoreCase(abc,null,null)"); + assertEquals("xyz", StringUtils.prependIfMissingIgnoreCase("", "xyz", (CharSequence[]) null), "prependIfMissingIgnoreCase(\"\",xyz,null)"); + assertEquals("xyzabc", StringUtils.prependIfMissingIgnoreCase("abc", "xyz", null), "prependIfMissingIgnoreCase(abc,xyz,{null})"); + assertEquals("abc", StringUtils.prependIfMissingIgnoreCase("abc", "xyz", ""), "prependIfMissingIgnoreCase(abc,xyz,\"\")"); + assertEquals("xyzabc", StringUtils.prependIfMissingIgnoreCase("abc", "xyz", "mno"), "prependIfMissingIgnoreCase(abc,xyz,mno)"); + assertEquals("xyzabc", StringUtils.prependIfMissingIgnoreCase("xyzabc", "xyz", "mno"), "prependIfMissingIgnoreCase(xyzabc,xyz,mno)"); + assertEquals("mnoabc", StringUtils.prependIfMissingIgnoreCase("mnoabc", "xyz", "mno"), "prependIfMissingIgnoreCase(mnoabc,xyz,mno)"); + assertEquals("XYZabc", StringUtils.prependIfMissingIgnoreCase("XYZabc", "xyz", "mno"), "prependIfMissingIgnoreCase(XYZabc,xyz,mno)"); + assertEquals("MNOabc", StringUtils.prependIfMissingIgnoreCase("MNOabc", "xyz", "mno"), "prependIfMissingIgnoreCase(MNOabc,xyz,mno)"); + } + + @Test + public void testReCapitalize() { + // reflection type of tests: Sentences. + assertEquals(SENTENCE_UNCAP, StringUtils.uncapitalize(StringUtils.capitalize(SENTENCE_UNCAP)), + "uncapitalize(capitalize(String)) failed"); + assertEquals(SENTENCE_CAP, StringUtils.capitalize(StringUtils.uncapitalize(SENTENCE_CAP)), + "capitalize(uncapitalize(String)) failed"); + + // reflection type of tests: One word. + assertEquals(FOO_UNCAP, StringUtils.uncapitalize(StringUtils.capitalize(FOO_UNCAP)), + "uncapitalize(capitalize(String)) failed"); + assertEquals(FOO_CAP, StringUtils.capitalize(StringUtils.uncapitalize(FOO_CAP)), + "capitalize(uncapitalize(String)) failed"); + } + + @Test + public void testRemove_char() { + // StringUtils.remove(null, *) = null + assertNull(StringUtils.remove(null, null)); + assertNull(StringUtils.remove(null, 'a')); + + // StringUtils.remove("", *) = "" + assertEquals("", StringUtils.remove("", null)); + assertEquals("", StringUtils.remove("", 'a')); + + // StringUtils.remove("queued", 'u') = "qeed" + assertEquals("qeed", StringUtils.remove("queued", 'u')); + + // StringUtils.remove("queued", 'z') = "queued" + assertEquals("queued", StringUtils.remove("queued", 'z')); + } + + @Test + public void testRemove_String() { + // StringUtils.remove(null, *) = null + assertNull(StringUtils.remove(null, null)); + assertNull(StringUtils.remove(null, "")); + assertNull(StringUtils.remove(null, "a")); + + // StringUtils.remove("", *) = "" + assertEquals("", StringUtils.remove("", null)); + assertEquals("", StringUtils.remove("", "")); + assertEquals("", StringUtils.remove("", "a")); + + // StringUtils.remove(*, null) = * + assertNull(StringUtils.remove(null, null)); + assertEquals("", StringUtils.remove("", null)); + assertEquals("a", StringUtils.remove("a", null)); + + // StringUtils.remove(*, "") = * + assertNull(StringUtils.remove(null, "")); + assertEquals("", StringUtils.remove("", "")); + assertEquals("a", StringUtils.remove("a", "")); + + // StringUtils.remove("queued", "ue") = "qd" + assertEquals("qd", StringUtils.remove("queued", "ue")); + + // StringUtils.remove("queued", "zz") = "queued" + assertEquals("queued", StringUtils.remove("queued", "zz")); + } + + @Test + public void testRemoveAll_StringString() { + assertNull(StringUtils.removeAll(null, "")); + assertEquals("any", StringUtils.removeAll("any", null)); + + assertEquals("any", StringUtils.removeAll("any", "")); + assertEquals("", StringUtils.removeAll("any", ".*")); + assertEquals("", StringUtils.removeAll("any", ".+")); + assertEquals("", StringUtils.removeAll("any", ".?")); + + assertEquals("A\nB", StringUtils.removeAll("A<__>\n<__>B", "<.*>")); + assertEquals("AB", StringUtils.removeAll("A<__>\n<__>B", "(?s)<.*>")); + assertEquals("ABC123", StringUtils.removeAll("ABCabc123abc", "[a-z]")); + + assertThrows( + PatternSyntaxException.class, + () -> StringUtils.removeAll("any", "{badRegexSyntax}"), + "StringUtils.removeAll expecting PatternSyntaxException"); + } + + @Test + public void testRemoveEnd() { + // StringUtils.removeEnd("", *) = "" + assertNull(StringUtils.removeEnd(null, null)); + assertNull(StringUtils.removeEnd(null, "")); + assertNull(StringUtils.removeEnd(null, "a")); + + // StringUtils.removeEnd(*, null) = * + assertEquals(StringUtils.removeEnd("", null), ""); + assertEquals(StringUtils.removeEnd("", ""), ""); + assertEquals(StringUtils.removeEnd("", "a"), ""); + + // All others: + assertEquals(StringUtils.removeEnd("www.domain.com.", ".com"), "www.domain.com."); + assertEquals(StringUtils.removeEnd("www.domain.com", ".com"), "www.domain"); + assertEquals(StringUtils.removeEnd("www.domain", ".com"), "www.domain"); + assertEquals(StringUtils.removeEnd("domain.com", ""), "domain.com"); + assertEquals(StringUtils.removeEnd("domain.com", null), "domain.com"); + } + + @Test + public void testRemoveEndIgnoreCase() { + // StringUtils.removeEndIgnoreCase("", *) = "" + assertNull(StringUtils.removeEndIgnoreCase(null, null), "removeEndIgnoreCase(null, null)"); + assertNull(StringUtils.removeEndIgnoreCase(null, ""), "removeEndIgnoreCase(null, \"\")"); + assertNull(StringUtils.removeEndIgnoreCase(null, "a"), "removeEndIgnoreCase(null, \"a\")"); + + // StringUtils.removeEnd(*, null) = * + assertEquals(StringUtils.removeEndIgnoreCase("", null), "", "removeEndIgnoreCase(\"\", null)"); + assertEquals(StringUtils.removeEndIgnoreCase("", ""), "", "removeEndIgnoreCase(\"\", \"\")"); + assertEquals(StringUtils.removeEndIgnoreCase("", "a"), "", "removeEndIgnoreCase(\"\", \"a\")"); + + // All others: + assertEquals(StringUtils.removeEndIgnoreCase("www.domain.com.", ".com"), "www.domain.com.", "removeEndIgnoreCase(\"www.domain.com.\", \".com\")"); + assertEquals(StringUtils.removeEndIgnoreCase("www.domain.com", ".com"), "www.domain", "removeEndIgnoreCase(\"www.domain.com\", \".com\")"); + assertEquals(StringUtils.removeEndIgnoreCase("www.domain", ".com"), "www.domain", "removeEndIgnoreCase(\"www.domain\", \".com\")"); + assertEquals(StringUtils.removeEndIgnoreCase("domain.com", ""), "domain.com", "removeEndIgnoreCase(\"domain.com\", \"\")"); + assertEquals(StringUtils.removeEndIgnoreCase("domain.com", null), "domain.com", "removeEndIgnoreCase(\"domain.com\", null)"); + + // Case-insensitive: + assertEquals(StringUtils.removeEndIgnoreCase("www.domain.com", ".COM"), "www.domain", "removeEndIgnoreCase(\"www.domain.com\", \".COM\")"); + assertEquals(StringUtils.removeEndIgnoreCase("www.domain.COM", ".com"), "www.domain", "removeEndIgnoreCase(\"www.domain.COM\", \".com\")"); + } + + @Test + public void testRemoveFirst_StringString() { + assertNull(StringUtils.removeFirst(null, "")); + assertEquals("any", StringUtils.removeFirst("any", null)); + + assertEquals("any", StringUtils.removeFirst("any", "")); + assertEquals("", StringUtils.removeFirst("any", ".*")); + assertEquals("", StringUtils.removeFirst("any", ".+")); + assertEquals("bc", StringUtils.removeFirst("abc", ".?")); + + assertEquals("A\n<__>B", StringUtils.removeFirst("A<__>\n<__>B", "<.*>")); + assertEquals("AB", StringUtils.removeFirst("A<__>\n<__>B", "(?s)<.*>")); + assertEquals("ABCbc123", StringUtils.removeFirst("ABCabc123", "[a-z]")); + assertEquals("ABC123abc", StringUtils.removeFirst("ABCabc123abc", "[a-z]+")); + + assertThrows( + PatternSyntaxException.class, + () -> StringUtils.removeFirst("any", "{badRegexSyntax}"), + "StringUtils.removeFirst expecting PatternSyntaxException"); + } + + @Test + public void testRemoveIgnoreCase_String() { + // StringUtils.removeIgnoreCase(null, *) = null + assertNull(StringUtils.removeIgnoreCase(null, null)); + assertNull(StringUtils.removeIgnoreCase(null, "")); + assertNull(StringUtils.removeIgnoreCase(null, "a")); + + // StringUtils.removeIgnoreCase("", *) = "" + assertEquals("", StringUtils.removeIgnoreCase("", null)); + assertEquals("", StringUtils.removeIgnoreCase("", "")); + assertEquals("", StringUtils.removeIgnoreCase("", "a")); + + // StringUtils.removeIgnoreCase(*, null) = * + assertNull(StringUtils.removeIgnoreCase(null, null)); + assertEquals("", StringUtils.removeIgnoreCase("", null)); + assertEquals("a", StringUtils.removeIgnoreCase("a", null)); + + // StringUtils.removeIgnoreCase(*, "") = * + assertNull(StringUtils.removeIgnoreCase(null, "")); + assertEquals("", StringUtils.removeIgnoreCase("", "")); + assertEquals("a", StringUtils.removeIgnoreCase("a", "")); + + // StringUtils.removeIgnoreCase("queued", "ue") = "qd" + assertEquals("qd", StringUtils.removeIgnoreCase("queued", "ue")); + + // StringUtils.removeIgnoreCase("queued", "zz") = "queued" + assertEquals("queued", StringUtils.removeIgnoreCase("queued", "zz")); + + // IgnoreCase + // StringUtils.removeIgnoreCase("quEUed", "UE") = "qd" + assertEquals("qd", StringUtils.removeIgnoreCase("quEUed", "UE")); + + // StringUtils.removeIgnoreCase("queued", "zZ") = "queued" + assertEquals("queued", StringUtils.removeIgnoreCase("queued", "zZ")); + + // StringUtils.removeIgnoreCase("\u0130x", "x") = "\u0130" + assertEquals("\u0130", StringUtils.removeIgnoreCase("\u0130x", "x")); + + // LANG-1453 + StringUtils.removeIgnoreCase("İa", "a"); + } + + @Test + public void testRemovePattern_StringString() { + assertNull(StringUtils.removePattern(null, "")); + assertEquals("any", StringUtils.removePattern("any", null)); + + assertEquals("", StringUtils.removePattern("", "")); + assertEquals("", StringUtils.removePattern("", ".*")); + assertEquals("", StringUtils.removePattern("", ".+")); + + assertEquals("AB", StringUtils.removePattern("A<__>\n<__>B", "<.*>")); + assertEquals("AB", StringUtils.removePattern("A<__>\\n<__>B", "<.*>")); + assertEquals("", StringUtils.removePattern("<A>x\\ny</A>", "<A>.*</A>")); + assertEquals("", StringUtils.removePattern("<A>\nxy\n</A>", "<A>.*</A>")); + + assertEquals("ABC123", StringUtils.removePattern("ABCabc123", "[a-z]")); + } + + @Test + public void testRemoveStartChar() { + // StringUtils.removeStart("", *) = "" + assertNull(StringUtils.removeStart(null, '\0')); + assertNull(StringUtils.removeStart(null, 'a')); + + // StringUtils.removeStart(*, null) = * + assertEquals(StringUtils.removeStart("", '\0'), ""); + assertEquals(StringUtils.removeStart("", 'a'), ""); + + // All others: + assertEquals(StringUtils.removeStart("/path", '/'), "path"); + assertEquals(StringUtils.removeStart("path", '/'), "path"); + assertEquals(StringUtils.removeStart("path", '\0'), "path"); + } + + @Test + public void testRemoveStartString() { + // StringUtils.removeStart("", *) = "" + assertNull(StringUtils.removeStart(null, null)); + assertNull(StringUtils.removeStart(null, "")); + assertNull(StringUtils.removeStart(null, "a")); + + // StringUtils.removeStart(*, null) = * + assertEquals(StringUtils.removeStart("", null), ""); + assertEquals(StringUtils.removeStart("", ""), ""); + assertEquals(StringUtils.removeStart("", "a"), ""); + + // All others: + assertEquals(StringUtils.removeStart("www.domain.com", "www."), "domain.com"); + assertEquals(StringUtils.removeStart("domain.com", "www."), "domain.com"); + assertEquals(StringUtils.removeStart("domain.com", ""), "domain.com"); + assertEquals(StringUtils.removeStart("domain.com", null), "domain.com"); + } + + @Test + public void testRemoveStartIgnoreCase() { + // StringUtils.removeStart("", *) = "" + assertNull(StringUtils.removeStartIgnoreCase(null, null), "removeStartIgnoreCase(null, null)"); + assertNull(StringUtils.removeStartIgnoreCase(null, ""), "removeStartIgnoreCase(null, \"\")"); + assertNull(StringUtils.removeStartIgnoreCase(null, "a"), "removeStartIgnoreCase(null, \"a\")"); + + // StringUtils.removeStart(*, null) = * + assertEquals(StringUtils.removeStartIgnoreCase("", null), "", "removeStartIgnoreCase(\"\", null)"); + assertEquals(StringUtils.removeStartIgnoreCase("", ""), "", "removeStartIgnoreCase(\"\", \"\")"); + assertEquals(StringUtils.removeStartIgnoreCase("", "a"), "", "removeStartIgnoreCase(\"\", \"a\")"); + + // All others: + assertEquals(StringUtils.removeStartIgnoreCase("www.domain.com", "www."), "domain.com", "removeStartIgnoreCase(\"www.domain.com\", \"www.\")"); + assertEquals(StringUtils.removeStartIgnoreCase("domain.com", "www."), "domain.com", "removeStartIgnoreCase(\"domain.com\", \"www.\")"); + assertEquals(StringUtils.removeStartIgnoreCase("domain.com", ""), "domain.com", "removeStartIgnoreCase(\"domain.com\", \"\")"); + assertEquals(StringUtils.removeStartIgnoreCase("domain.com", null), "domain.com", "removeStartIgnoreCase(\"domain.com\", null)"); + + // Case-insensitive: + assertEquals(StringUtils.removeStartIgnoreCase("www.domain.com", "WWW."), "domain.com", "removeStartIgnoreCase(\"www.domain.com\", \"WWW.\")"); + } + + @Test + public void testRepeat_CharInt() { + assertEquals("zzz", StringUtils.repeat('z', 3)); + assertEquals("", StringUtils.repeat('z', 0)); + assertEquals("", StringUtils.repeat('z', -2)); + } + + @Test + public void testRepeat_StringInt() { + assertNull(StringUtils.repeat(null, 2)); + assertEquals("", StringUtils.repeat("ab", 0)); + assertEquals("", StringUtils.repeat("", 3)); + assertEquals("aaa", StringUtils.repeat("a", 3)); + assertEquals("", StringUtils.repeat("a", -2)); + assertEquals("ababab", StringUtils.repeat("ab", 3)); + assertEquals("abcabcabc", StringUtils.repeat("abc", 3)); + final String str = StringUtils.repeat("a", 10000); // bigger than pad limit + assertEquals(10000, str.length()); + assertTrue(StringUtils.containsOnly(str, 'a')); + } + + @Test + public void testRepeat_StringStringInt() { + assertNull(StringUtils.repeat(null, null, 2)); + assertNull(StringUtils.repeat(null, "x", 2)); + assertEquals("", StringUtils.repeat("", null, 2)); + + assertEquals("", StringUtils.repeat("ab", "", 0)); + assertEquals("", StringUtils.repeat("", "", 2)); + + assertEquals("xx", StringUtils.repeat("", "x", 3)); + + assertEquals("?, ?, ?", StringUtils.repeat("?", ", ", 3)); + } + + /** + * Test method for 'StringUtils.replaceEach(String, String[], String[])' + */ + @Test + public void testReplace_StringStringArrayStringArray() { + //JAVADOC TESTS START + assertNull(StringUtils.replaceEach(null, new String[]{"a"}, new String[]{"b"})); + assertEquals(StringUtils.replaceEach("", new String[]{"a"}, new String[]{"b"}), ""); + assertEquals(StringUtils.replaceEach("aba", null, null), "aba"); + assertEquals(StringUtils.replaceEach("aba", new String[0], null), "aba"); + assertEquals(StringUtils.replaceEach("aba", null, new String[0]), "aba"); + assertEquals(StringUtils.replaceEach("aba", new String[]{"a"}, null), "aba"); + + assertEquals(StringUtils.replaceEach("aba", new String[]{"a"}, new String[]{""}), "b"); + assertEquals(StringUtils.replaceEach("aba", new String[]{null}, new String[]{"a"}), "aba"); + assertEquals(StringUtils.replaceEach("abcde", new String[]{"ab", "d"}, new String[]{"w", "t"}), "wcte"); + assertEquals(StringUtils.replaceEach("abcde", new String[]{"ab", "d"}, new String[]{"d", "t"}), "dcte"); + //JAVADOC TESTS END + + assertEquals("bcc", StringUtils.replaceEach("abc", new String[]{"a", "b"}, new String[]{"b", "c"})); + assertEquals("q651.506bera", StringUtils.replaceEach("d216.102oren", + new String[]{"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", + "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", + "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", + "U", "V", "W", "X", "Y", "Z", "1", "2", "3", "4", "5", "6", "7", "8", "9"}, + new String[]{"n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "a", + "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "N", "O", "P", "Q", + "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "A", "B", "C", "D", "E", "F", "G", + "H", "I", "J", "K", "L", "M", "5", "6", "7", "8", "9", "1", "2", "3", "4"})); + + // Test null safety inside arrays - LANG-552 + assertEquals(StringUtils.replaceEach("aba", new String[]{"a"}, new String[]{null}), "aba"); + assertEquals(StringUtils.replaceEach("aba", new String[]{"a", "b"}, new String[]{"c", null}), "cbc"); + + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.replaceEach("abba", new String[]{"a"}, new String[]{"b", "a"}), + "StringUtils.replaceEach(String, String[], String[]) expecting IllegalArgumentException"); + } + + /** + * Test method for 'StringUtils.replaceEachRepeatedly(String, String[], String[])' + */ + @Test + public void testReplace_StringStringArrayStringArrayBoolean() { + //JAVADOC TESTS START + assertNull(StringUtils.replaceEachRepeatedly(null, new String[]{"a"}, new String[]{"b"})); + assertEquals("", StringUtils.replaceEachRepeatedly("", new String[]{"a"}, new String[]{"b"})); + assertEquals("aba", StringUtils.replaceEachRepeatedly("aba", null, null)); + assertEquals("aba", StringUtils.replaceEachRepeatedly("aba", new String[0], null)); + assertEquals("aba", StringUtils.replaceEachRepeatedly("aba", null, new String[0])); + assertEquals("aba", StringUtils.replaceEachRepeatedly("aba", new String[0], null)); + + assertEquals("b", StringUtils.replaceEachRepeatedly("aba", new String[]{"a"}, new String[]{""})); + assertEquals("aba", StringUtils.replaceEachRepeatedly("aba", new String[]{null}, new String[]{"a"})); + assertEquals("wcte", StringUtils.replaceEachRepeatedly("abcde", new String[]{"ab", "d"}, new String[]{"w", "t"})); + assertEquals("tcte", StringUtils.replaceEachRepeatedly("abcde", new String[]{"ab", "d"}, new String[]{"d", "t"})); + assertEquals("blaan", StringUtils.replaceEachRepeatedly("blllaan", new String[]{"llaan"}, new String[]{"laan"}) ); + + assertThrows( + IllegalStateException.class, + () -> StringUtils.replaceEachRepeatedly("abcde", new String[]{"ab", "d"}, new String[]{"d", "ab"}), + "Should be a circular reference"); + + //JAVADOC TESTS END + } + + @Test + public void testReplace_StringStringString() { + assertNull(StringUtils.replace(null, null, null)); + assertNull(StringUtils.replace(null, null, "any")); + assertNull(StringUtils.replace(null, "any", null)); + assertNull(StringUtils.replace(null, "any", "any")); + + assertEquals("", StringUtils.replace("", null, null)); + assertEquals("", StringUtils.replace("", null, "any")); + assertEquals("", StringUtils.replace("", "any", null)); + assertEquals("", StringUtils.replace("", "any", "any")); + + assertEquals("FOO", StringUtils.replace("FOO", "", "any")); + assertEquals("FOO", StringUtils.replace("FOO", null, "any")); + assertEquals("FOO", StringUtils.replace("FOO", "F", null)); + assertEquals("FOO", StringUtils.replace("FOO", null, null)); + + assertEquals("", StringUtils.replace("foofoofoo", "foo", "")); + assertEquals("barbarbar", StringUtils.replace("foofoofoo", "foo", "bar")); + assertEquals("farfarfar", StringUtils.replace("foofoofoo", "oo", "ar")); + } + + @Test + public void testReplace_StringStringStringInt() { + assertNull(StringUtils.replace(null, null, null, 2)); + assertNull(StringUtils.replace(null, null, "any", 2)); + assertNull(StringUtils.replace(null, "any", null, 2)); + assertNull(StringUtils.replace(null, "any", "any", 2)); + + assertEquals("", StringUtils.replace("", null, null, 2)); + assertEquals("", StringUtils.replace("", null, "any", 2)); + assertEquals("", StringUtils.replace("", "any", null, 2)); + assertEquals("", StringUtils.replace("", "any", "any", 2)); + + final String str = new String(new char[]{'o', 'o', 'f', 'o', 'o'}); + assertSame(str, StringUtils.replace(str, "x", "", -1)); + + assertEquals("f", StringUtils.replace("oofoo", "o", "", -1)); + assertEquals("oofoo", StringUtils.replace("oofoo", "o", "", 0)); + assertEquals("ofoo", StringUtils.replace("oofoo", "o", "", 1)); + assertEquals("foo", StringUtils.replace("oofoo", "o", "", 2)); + assertEquals("fo", StringUtils.replace("oofoo", "o", "", 3)); + assertEquals("f", StringUtils.replace("oofoo", "o", "", 4)); + + assertEquals("f", StringUtils.replace("oofoo", "o", "", -5)); + assertEquals("f", StringUtils.replace("oofoo", "o", "", 1000)); + } + + @Test + public void testReplaceAll_StringStringString() { + assertNull(StringUtils.replaceAll(null, "", "")); + + assertEquals("any", StringUtils.replaceAll("any", null, "")); + assertEquals("any", StringUtils.replaceAll("any", "", null)); + + assertEquals("zzz", StringUtils.replaceAll("", "", "zzz")); + assertEquals("zzz", StringUtils.replaceAll("", ".*", "zzz")); + assertEquals("", StringUtils.replaceAll("", ".+", "zzz")); + assertEquals("ZZaZZbZZcZZ", StringUtils.replaceAll("abc", "", "ZZ")); + + assertEquals("z\nz", StringUtils.replaceAll("<__>\n<__>", "<.*>", "z")); + assertEquals("z", StringUtils.replaceAll("<__>\n<__>", "(?s)<.*>", "z")); + + assertEquals("ABC___123", StringUtils.replaceAll("ABCabc123", "[a-z]", "_")); + assertEquals("ABC_123", StringUtils.replaceAll("ABCabc123", "[^A-Z0-9]+", "_")); + assertEquals("ABC123", StringUtils.replaceAll("ABCabc123", "[^A-Z0-9]+", "")); + assertEquals("Lorem_ipsum_dolor_sit", + StringUtils.replaceAll("Lorem ipsum dolor sit", "( +)([a-z]+)", "_$2")); + + assertThrows( + PatternSyntaxException.class, + () -> StringUtils.replaceAll("any", "{badRegexSyntax}", ""), + "StringUtils.replaceAll expecting PatternSyntaxException"); + } + + @Test + public void testReplaceChars_StringCharChar() { + assertNull(StringUtils.replaceChars(null, 'b', 'z')); + assertEquals("", StringUtils.replaceChars("", 'b', 'z')); + assertEquals("azcza", StringUtils.replaceChars("abcba", 'b', 'z')); + assertEquals("abcba", StringUtils.replaceChars("abcba", 'x', 'z')); + } + + @Test + public void testReplaceChars_StringStringString() { + assertNull(StringUtils.replaceChars(null, null, null)); + assertNull(StringUtils.replaceChars(null, "", null)); + assertNull(StringUtils.replaceChars(null, "a", null)); + assertNull(StringUtils.replaceChars(null, null, "")); + assertNull(StringUtils.replaceChars(null, null, "x")); + + assertEquals("", StringUtils.replaceChars("", null, null)); + assertEquals("", StringUtils.replaceChars("", "", null)); + assertEquals("", StringUtils.replaceChars("", "a", null)); + assertEquals("", StringUtils.replaceChars("", null, "")); + assertEquals("", StringUtils.replaceChars("", null, "x")); + + assertEquals("abc", StringUtils.replaceChars("abc", null, null)); + assertEquals("abc", StringUtils.replaceChars("abc", null, "")); + assertEquals("abc", StringUtils.replaceChars("abc", null, "x")); + + assertEquals("abc", StringUtils.replaceChars("abc", "", null)); + assertEquals("abc", StringUtils.replaceChars("abc", "", "")); + assertEquals("abc", StringUtils.replaceChars("abc", "", "x")); + + assertEquals("ac", StringUtils.replaceChars("abc", "b", null)); + assertEquals("ac", StringUtils.replaceChars("abc", "b", "")); + assertEquals("axc", StringUtils.replaceChars("abc", "b", "x")); + + assertEquals("ayzya", StringUtils.replaceChars("abcba", "bc", "yz")); + assertEquals("ayya", StringUtils.replaceChars("abcba", "bc", "y")); + assertEquals("ayzya", StringUtils.replaceChars("abcba", "bc", "yzx")); + + assertEquals("abcba", StringUtils.replaceChars("abcba", "z", "w")); + assertSame("abcba", StringUtils.replaceChars("abcba", "z", "w")); + + // Javadoc examples: + assertEquals("jelly", StringUtils.replaceChars("hello", "ho", "jy")); + assertEquals("ayzya", StringUtils.replaceChars("abcba", "bc", "yz")); + assertEquals("ayya", StringUtils.replaceChars("abcba", "bc", "y")); + assertEquals("ayzya", StringUtils.replaceChars("abcba", "bc", "yzx")); + + // From https://issues.apache.org/bugzilla/show_bug.cgi?id=25454 + assertEquals("bcc", StringUtils.replaceChars("abc", "ab", "bc")); + assertEquals("q651.506bera", StringUtils.replaceChars("d216.102oren", + "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789", + "nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM567891234")); + } + + @Test + public void testReplaceFirst_StringStringString() { + assertNull(StringUtils.replaceFirst(null, "", "")); + + assertEquals("any", StringUtils.replaceFirst("any", null, "")); + assertEquals("any", StringUtils.replaceFirst("any", "", null)); + + assertEquals("zzz", StringUtils.replaceFirst("", "", "zzz")); + assertEquals("zzz", StringUtils.replaceFirst("", ".*", "zzz")); + assertEquals("", StringUtils.replaceFirst("", ".+", "zzz")); + assertEquals("ZZabc", StringUtils.replaceFirst("abc", "", "ZZ")); + + assertEquals("z\n<__>", StringUtils.replaceFirst("<__>\n<__>", "<.*>", "z")); + assertEquals("z", StringUtils.replaceFirst("<__>\n<__>", "(?s)<.*>", "z")); + + assertEquals("ABC_bc123", StringUtils.replaceFirst("ABCabc123", "[a-z]", "_")); + assertEquals("ABC_123abc", StringUtils.replaceFirst("ABCabc123abc", "[^A-Z0-9]+", "_")); + assertEquals("ABC123abc", StringUtils.replaceFirst("ABCabc123abc", "[^A-Z0-9]+", "")); + assertEquals("Lorem_ipsum dolor sit", + StringUtils.replaceFirst("Lorem ipsum dolor sit", "( +)([a-z]+)", "_$2")); + + assertThrows( + PatternSyntaxException.class, + () -> StringUtils.replaceFirst("any", "{badRegexSyntax}", ""), + "StringUtils.replaceFirst expecting PatternSyntaxException"); + } + + @Test + public void testReplaceIgnoreCase_StringStringString() { + assertNull(StringUtils.replaceIgnoreCase(null, null, null)); + assertNull(StringUtils.replaceIgnoreCase(null, null, "any")); + assertNull(StringUtils.replaceIgnoreCase(null, "any", null)); + assertNull(StringUtils.replaceIgnoreCase(null, "any", "any")); + + assertEquals("", StringUtils.replaceIgnoreCase("", null, null)); + assertEquals("", StringUtils.replaceIgnoreCase("", null, "any")); + assertEquals("", StringUtils.replaceIgnoreCase("", "any", null)); + assertEquals("", StringUtils.replaceIgnoreCase("", "any", "any")); + + assertEquals("FOO", StringUtils.replaceIgnoreCase("FOO", "", "any")); + assertEquals("FOO", StringUtils.replaceIgnoreCase("FOO", null, "any")); + assertEquals("FOO", StringUtils.replaceIgnoreCase("FOO", "F", null)); + assertEquals("FOO", StringUtils.replaceIgnoreCase("FOO", null, null)); + + assertEquals("", StringUtils.replaceIgnoreCase("foofoofoo", "foo", "")); + assertEquals("barbarbar", StringUtils.replaceIgnoreCase("foofoofoo", "foo", "bar")); + assertEquals("farfarfar", StringUtils.replaceIgnoreCase("foofoofoo", "oo", "ar")); + + // IgnoreCase + assertEquals("", StringUtils.replaceIgnoreCase("foofoofoo", "FOO", "")); + assertEquals("barbarbar", StringUtils.replaceIgnoreCase("fooFOOfoo", "foo", "bar")); + assertEquals("farfarfar", StringUtils.replaceIgnoreCase("foofOOfoo", "OO", "ar")); + } + + @Test + public void testReplaceIgnoreCase_StringStringStringInt() { + assertNull(StringUtils.replaceIgnoreCase(null, null, null, 2)); + assertNull(StringUtils.replaceIgnoreCase(null, null, "any", 2)); + assertNull(StringUtils.replaceIgnoreCase(null, "any", null, 2)); + assertNull(StringUtils.replaceIgnoreCase(null, "any", "any", 2)); + + assertEquals("", StringUtils.replaceIgnoreCase("", null, null, 2)); + assertEquals("", StringUtils.replaceIgnoreCase("", null, "any", 2)); + assertEquals("", StringUtils.replaceIgnoreCase("", "any", null, 2)); + assertEquals("", StringUtils.replaceIgnoreCase("", "any", "any", 2)); + + final String str = new String(new char[] { 'o', 'o', 'f', 'o', 'o' }); + assertSame(str, StringUtils.replaceIgnoreCase(str, "x", "", -1)); + + assertEquals("f", StringUtils.replaceIgnoreCase("oofoo", "o", "", -1)); + assertEquals("oofoo", StringUtils.replaceIgnoreCase("oofoo", "o", "", 0)); + assertEquals("ofoo", StringUtils.replaceIgnoreCase("oofoo", "o", "", 1)); + assertEquals("foo", StringUtils.replaceIgnoreCase("oofoo", "o", "", 2)); + assertEquals("fo", StringUtils.replaceIgnoreCase("oofoo", "o", "", 3)); + assertEquals("f", StringUtils.replaceIgnoreCase("oofoo", "o", "", 4)); + + assertEquals("f", StringUtils.replaceIgnoreCase("oofoo", "o", "", -5)); + assertEquals("f", StringUtils.replaceIgnoreCase("oofoo", "o", "", 1000)); + + // IgnoreCase + assertEquals("f", StringUtils.replaceIgnoreCase("oofoo", "O", "", -1)); + assertEquals("oofoo", StringUtils.replaceIgnoreCase("oofoo", "O", "", 0)); + assertEquals("ofoo", StringUtils.replaceIgnoreCase("oofoo", "O", "", 1)); + assertEquals("foo", StringUtils.replaceIgnoreCase("oofoo", "O", "", 2)); + assertEquals("fo", StringUtils.replaceIgnoreCase("oofoo", "O", "", 3)); + assertEquals("f", StringUtils.replaceIgnoreCase("oofoo", "O", "", 4)); + + assertEquals("f", StringUtils.replaceIgnoreCase("oofoo", "O", "", -5)); + assertEquals("f", StringUtils.replaceIgnoreCase("oofoo", "O", "", 1000)); + } + + @Test + public void testReplaceOnce_StringStringString() { + assertNull(StringUtils.replaceOnce(null, null, null)); + assertNull(StringUtils.replaceOnce(null, null, "any")); + assertNull(StringUtils.replaceOnce(null, "any", null)); + assertNull(StringUtils.replaceOnce(null, "any", "any")); + + assertEquals("", StringUtils.replaceOnce("", null, null)); + assertEquals("", StringUtils.replaceOnce("", null, "any")); + assertEquals("", StringUtils.replaceOnce("", "any", null)); + assertEquals("", StringUtils.replaceOnce("", "any", "any")); + + assertEquals("FOO", StringUtils.replaceOnce("FOO", "", "any")); + assertEquals("FOO", StringUtils.replaceOnce("FOO", null, "any")); + assertEquals("FOO", StringUtils.replaceOnce("FOO", "F", null)); + assertEquals("FOO", StringUtils.replaceOnce("FOO", null, null)); + + assertEquals("foofoo", StringUtils.replaceOnce("foofoofoo", "foo", "")); + } + + @Test + public void testReplaceOnceIgnoreCase_StringStringString() { + assertNull(StringUtils.replaceOnceIgnoreCase(null, null, null)); + assertNull(StringUtils.replaceOnceIgnoreCase(null, null, "any")); + assertNull(StringUtils.replaceOnceIgnoreCase(null, "any", null)); + assertNull(StringUtils.replaceOnceIgnoreCase(null, "any", "any")); + + assertEquals("", StringUtils.replaceOnceIgnoreCase("", null, null)); + assertEquals("", StringUtils.replaceOnceIgnoreCase("", null, "any")); + assertEquals("", StringUtils.replaceOnceIgnoreCase("", "any", null)); + assertEquals("", StringUtils.replaceOnceIgnoreCase("", "any", "any")); + + assertEquals("FOO", StringUtils.replaceOnceIgnoreCase("FOO", "", "any")); + assertEquals("FOO", StringUtils.replaceOnceIgnoreCase("FOO", null, "any")); + assertEquals("FOO", StringUtils.replaceOnceIgnoreCase("FOO", "F", null)); + assertEquals("FOO", StringUtils.replaceOnceIgnoreCase("FOO", null, null)); + + assertEquals("foofoo", StringUtils.replaceOnceIgnoreCase("foofoofoo", "foo", "")); + + // Ignore Case + assertEquals("Foofoo", StringUtils.replaceOnceIgnoreCase("FoOFoofoo", "foo", "")); + } + + @Test + public void testReplacePattern_StringStringString() { + assertNull(StringUtils.replacePattern(null, "", "")); + assertEquals("any", StringUtils.replacePattern("any", null, "")); + assertEquals("any", StringUtils.replacePattern("any", "", null)); + + assertEquals("zzz", StringUtils.replacePattern("", "", "zzz")); + assertEquals("zzz", StringUtils.replacePattern("", ".*", "zzz")); + assertEquals("", StringUtils.replacePattern("", ".+", "zzz")); + + assertEquals("z", StringUtils.replacePattern("<__>\n<__>", "<.*>", "z")); + assertEquals("z", StringUtils.replacePattern("<__>\\n<__>", "<.*>", "z")); + assertEquals("X", StringUtils.replacePattern("<A>\nxy\n</A>", "<A>.*</A>", "X")); + + assertEquals("ABC___123", StringUtils.replacePattern("ABCabc123", "[a-z]", "_")); + assertEquals("ABC_123", StringUtils.replacePattern("ABCabc123", "[^A-Z0-9]+", "_")); + assertEquals("ABC123", StringUtils.replacePattern("ABCabc123", "[^A-Z0-9]+", "")); + assertEquals("Lorem_ipsum_dolor_sit", + StringUtils.replacePattern("Lorem ipsum dolor sit", "( +)([a-z]+)", "_$2")); + } + + @Test + public void testReverse_String() { + assertNull(StringUtils.reverse(null)); + assertEquals("", StringUtils.reverse("")); + assertEquals("sdrawkcab", StringUtils.reverse("backwards")); + } + + @Test + public void testReverseDelimited_StringChar() { + assertNull(StringUtils.reverseDelimited(null, '.')); + assertEquals("", StringUtils.reverseDelimited("", '.')); + assertEquals("c.b.a", StringUtils.reverseDelimited("a.b.c", '.')); + assertEquals("a b c", StringUtils.reverseDelimited("a b c", '.')); + assertEquals("", StringUtils.reverseDelimited("", '.')); + } + + @Test + public void testRightPad_StringInt() { + assertNull(StringUtils.rightPad(null, 5)); + assertEquals(" ", StringUtils.rightPad("", 5)); + assertEquals("abc ", StringUtils.rightPad("abc", 5)); + assertEquals("abc", StringUtils.rightPad("abc", 2)); + assertEquals("abc", StringUtils.rightPad("abc", -1)); + } + + @Test + public void testRightPad_StringIntChar() { + assertNull(StringUtils.rightPad(null, 5, ' ')); + assertEquals(" ", StringUtils.rightPad("", 5, ' ')); + assertEquals("abc ", StringUtils.rightPad("abc", 5, ' ')); + assertEquals("abc", StringUtils.rightPad("abc", 2, ' ')); + assertEquals("abc", StringUtils.rightPad("abc", -1, ' ')); + assertEquals("abcxx", StringUtils.rightPad("abc", 5, 'x')); + final String str = StringUtils.rightPad("aaa", 10000, 'a'); // bigger than pad length + assertEquals(10000, str.length()); + assertTrue(StringUtils.containsOnly(str, 'a')); + } + + @Test + public void testRightPad_StringIntString() { + assertNull(StringUtils.rightPad(null, 5, "-+")); + assertEquals(" ", StringUtils.rightPad("", 5, " ")); + assertNull(StringUtils.rightPad(null, 8, null)); + assertEquals("abc-+-+", StringUtils.rightPad("abc", 7, "-+")); + assertEquals("abc-+~", StringUtils.rightPad("abc", 6, "-+~")); + assertEquals("abc-+", StringUtils.rightPad("abc", 5, "-+~")); + assertEquals("abc", StringUtils.rightPad("abc", 2, " ")); + assertEquals("abc", StringUtils.rightPad("abc", -1, " ")); + assertEquals("abc ", StringUtils.rightPad("abc", 5, null)); + assertEquals("abc ", StringUtils.rightPad("abc", 5, "")); + } + + @Test + public void testRotate_StringInt() { + assertNull(StringUtils.rotate(null, 1)); + assertEquals("", StringUtils.rotate("", 1)); + assertEquals("abcdefg", StringUtils.rotate("abcdefg", 0)); + assertEquals("fgabcde", StringUtils.rotate("abcdefg", 2)); + assertEquals("cdefgab", StringUtils.rotate("abcdefg", -2)); + assertEquals("abcdefg", StringUtils.rotate("abcdefg", 7)); + assertEquals("abcdefg", StringUtils.rotate("abcdefg", -7)); + assertEquals("fgabcde", StringUtils.rotate("abcdefg", 9)); + assertEquals("cdefgab", StringUtils.rotate("abcdefg", -9)); + assertEquals("efgabcd", StringUtils.rotate("abcdefg", 17)); + assertEquals("defgabc", StringUtils.rotate("abcdefg", -17)); + } + + @Test + public void testSplit_String() { + assertNull(StringUtils.split(null)); + assertEquals(0, StringUtils.split("").length); + + String str = "a b .c"; + String[] res = StringUtils.split(str); + assertEquals(3, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals(".c", res[2]); + + str = " a "; + res = StringUtils.split(str); + assertEquals(1, res.length); + assertEquals("a", res[0]); + + str = "a" + WHITESPACE + "b" + NON_WHITESPACE + "c"; + res = StringUtils.split(str); + assertEquals(2, res.length); + assertEquals("a", res[0]); + assertEquals("b" + NON_WHITESPACE + "c", res[1]); + } + + @Test + public void testSplit_StringChar() { + assertNull(StringUtils.split(null, '.')); + assertEquals(0, StringUtils.split("", '.').length); + + String str = "a.b.. c"; + String[] res = StringUtils.split(str, '.'); + assertEquals(3, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals(" c", res[2]); + + str = ".a."; + res = StringUtils.split(str, '.'); + assertEquals(1, res.length); + assertEquals("a", res[0]); + + str = "a b c"; + res = StringUtils.split(str, ' '); + assertEquals(3, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals("c", res[2]); + } + + @Test + public void testSplit_StringString_StringStringInt() { + assertNull(StringUtils.split(null, ".")); + assertNull(StringUtils.split(null, ".", 3)); + + assertEquals(0, StringUtils.split("", ".").length); + assertEquals(0, StringUtils.split("", ".", 3).length); + + innerTestSplit('.', ".", ' '); + innerTestSplit('.', ".", ','); + innerTestSplit('.', ".,", 'x'); + for (int i = 0; i < WHITESPACE.length(); i++) { + for (int j = 0; j < NON_WHITESPACE.length(); j++) { + innerTestSplit(WHITESPACE.charAt(i), null, NON_WHITESPACE.charAt(j)); + innerTestSplit(WHITESPACE.charAt(i), String.valueOf(WHITESPACE.charAt(i)), NON_WHITESPACE.charAt(j)); + } + } + + String[] results; + final String[] expectedResults = {"ab", "de fg"}; + results = StringUtils.split("ab de fg", null, 2); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + + final String[] expectedResults2 = {"ab", "cd:ef"}; + results = StringUtils.split("ab:cd:ef", ":", 2); + assertEquals(expectedResults2.length, results.length); + for (int i = 0; i < expectedResults2.length; i++) { + assertEquals(expectedResults2[i], results[i]); + } + } + + @Test + public void testSplitByCharacterType() { + assertNull(StringUtils.splitByCharacterType(null)); + assertEquals(0, StringUtils.splitByCharacterType("").length); + + assertTrue(Objects.deepEquals(new String[]{"ab", " ", "de", " ", + "fg"}, StringUtils.splitByCharacterType("ab de fg"))); + + assertTrue(Objects.deepEquals(new String[]{"ab", " ", "de", " ", + "fg"}, StringUtils.splitByCharacterType("ab de fg"))); + + assertTrue(Objects.deepEquals(new String[]{"ab", ":", "cd", ":", + "ef"}, StringUtils.splitByCharacterType("ab:cd:ef"))); + + assertTrue(Objects.deepEquals(new String[]{"number", "5"}, + StringUtils.splitByCharacterType("number5"))); + + assertTrue(Objects.deepEquals(new String[]{"foo", "B", "ar"}, + StringUtils.splitByCharacterType("fooBar"))); + + assertTrue(Objects.deepEquals(new String[]{"foo", "200", "B", "ar"}, + StringUtils.splitByCharacterType("foo200Bar"))); + + assertTrue(Objects.deepEquals(new String[]{"ASFR", "ules"}, + StringUtils.splitByCharacterType("ASFRules"))); + } + + @Test + public void testSplitByCharacterTypeCamelCase() { + assertNull(StringUtils.splitByCharacterTypeCamelCase(null)); + assertEquals(0, StringUtils.splitByCharacterTypeCamelCase("").length); + + assertTrue(Objects.deepEquals(new String[]{"ab", " ", "de", " ", + "fg"}, StringUtils.splitByCharacterTypeCamelCase("ab de fg"))); + + assertTrue(Objects.deepEquals(new String[]{"ab", " ", "de", " ", + "fg"}, StringUtils.splitByCharacterTypeCamelCase("ab de fg"))); + + assertTrue(Objects.deepEquals(new String[]{"ab", ":", "cd", ":", + "ef"}, StringUtils.splitByCharacterTypeCamelCase("ab:cd:ef"))); + + assertTrue(Objects.deepEquals(new String[]{"number", "5"}, + StringUtils.splitByCharacterTypeCamelCase("number5"))); + + assertTrue(Objects.deepEquals(new String[]{"foo", "Bar"}, + StringUtils.splitByCharacterTypeCamelCase("fooBar"))); + + assertTrue(Objects.deepEquals(new String[]{"foo", "200", "Bar"}, + StringUtils.splitByCharacterTypeCamelCase("foo200Bar"))); + + assertTrue(Objects.deepEquals(new String[]{"ASF", "Rules"}, + StringUtils.splitByCharacterTypeCamelCase("ASFRules"))); + } + + @Test + public void testSplitByWholeSeparatorPreserveAllTokens_StringString() { + assertArrayEquals(null, StringUtils.splitByWholeSeparatorPreserveAllTokens(null, ".")); + + assertEquals(0, StringUtils.splitByWholeSeparatorPreserveAllTokens("", ".").length); + + // test whitespace + String input = "ab de fg"; + String[] expected = {"ab", "", "", "de", "fg"}; + + String[] actual = StringUtils.splitByWholeSeparatorPreserveAllTokens(input, null); + assertEquals(expected.length, actual.length); + for (int i = 0; i < actual.length; i += 1) { + assertEquals(expected[i], actual[i]); + } + + // test delimiter singlechar + input = "1::2:::3::::4"; + expected = new String[]{"1", "", "2", "", "", "3", "", "", "", "4"}; + + actual = StringUtils.splitByWholeSeparatorPreserveAllTokens(input, ":"); + assertEquals(expected.length, actual.length); + for (int i = 0; i < actual.length; i += 1) { + assertEquals(expected[i], actual[i]); + } + + // test delimiter multichar + input = "1::2:::3::::4"; + expected = new String[]{"1", "2", ":3", "", "4"}; + + actual = StringUtils.splitByWholeSeparatorPreserveAllTokens(input, "::"); + assertEquals(expected.length, actual.length); + for (int i = 0; i < actual.length; i += 1) { + assertEquals(expected[i], actual[i]); + } + } + + @Test + public void testSplitByWholeSeparatorPreserveAllTokens_StringStringInt() { + assertArrayEquals(null, StringUtils.splitByWholeSeparatorPreserveAllTokens(null, ".", -1)); + + assertEquals(0, StringUtils.splitByWholeSeparatorPreserveAllTokens("", ".", -1).length); + + // test whitespace + String input = "ab de fg"; + String[] expected = {"ab", "", "", "de", "fg"}; + + String[] actual = StringUtils.splitByWholeSeparatorPreserveAllTokens(input, null, -1); + assertEquals(expected.length, actual.length); + for (int i = 0; i < actual.length; i += 1) { + assertEquals(expected[i], actual[i]); + } + + // test delimiter singlechar + input = "1::2:::3::::4"; + expected = new String[]{"1", "", "2", "", "", "3", "", "", "", "4"}; + + actual = StringUtils.splitByWholeSeparatorPreserveAllTokens(input, ":", -1); + assertEquals(expected.length, actual.length); + for (int i = 0; i < actual.length; i += 1) { + assertEquals(expected[i], actual[i]); + } + + // test delimiter multichar + input = "1::2:::3::::4"; + expected = new String[]{"1", "2", ":3", "", "4"}; + + actual = StringUtils.splitByWholeSeparatorPreserveAllTokens(input, "::", -1); + assertEquals(expected.length, actual.length); + for (int i = 0; i < actual.length; i += 1) { + assertEquals(expected[i], actual[i]); + } + + // test delimiter char with max + input = "1::2::3:4"; + expected = new String[]{"1", "", "2", ":3:4"}; + + actual = StringUtils.splitByWholeSeparatorPreserveAllTokens(input, ":", 4); + assertEquals(expected.length, actual.length); + for (int i = 0; i < actual.length; i += 1) { + assertEquals(expected[i], actual[i]); + } + } + + @Test + public void testSplitByWholeString_StringStringBoolean() { + assertArrayEquals(null, StringUtils.splitByWholeSeparator(null, ".")); + + assertEquals(0, StringUtils.splitByWholeSeparator("", ".").length); + + final String stringToSplitOnNulls = "ab de fg"; + final String[] splitOnNullExpectedResults = {"ab", "de", "fg"}; + + final String[] splitOnNullResults = StringUtils.splitByWholeSeparator(stringToSplitOnNulls, null); + assertEquals(splitOnNullExpectedResults.length, splitOnNullResults.length); + for (int i = 0; i < splitOnNullExpectedResults.length; i += 1) { + assertEquals(splitOnNullExpectedResults[i], splitOnNullResults[i]); + } + + final String stringToSplitOnCharactersAndString = "abstemiouslyaeiouyabstemiously"; + + final String[] splitOnStringExpectedResults = {"abstemiously", "abstemiously"}; + final String[] splitOnStringResults = StringUtils.splitByWholeSeparator(stringToSplitOnCharactersAndString, "aeiouy"); + assertEquals(splitOnStringExpectedResults.length, splitOnStringResults.length); + for (int i = 0; i < splitOnStringExpectedResults.length; i += 1) { + assertEquals(splitOnStringExpectedResults[i], splitOnStringResults[i]); + } + + final String[] splitWithMultipleSeparatorExpectedResults = {"ab", "cd", "ef"}; + final String[] splitWithMultipleSeparator = StringUtils.splitByWholeSeparator("ab:cd::ef", ":"); + assertEquals(splitWithMultipleSeparatorExpectedResults.length, splitWithMultipleSeparator.length); + for (int i = 0; i < splitWithMultipleSeparatorExpectedResults.length; i++) { + assertEquals(splitWithMultipleSeparatorExpectedResults[i], splitWithMultipleSeparator[i]); + } + } + + @Test + public void testSplitByWholeString_StringStringBooleanInt() { + assertArrayEquals(null, StringUtils.splitByWholeSeparator(null, ".", 3)); + + assertEquals(0, StringUtils.splitByWholeSeparator("", ".", 3).length); + + final String stringToSplitOnNulls = "ab de fg"; + final String[] splitOnNullExpectedResults = {"ab", "de fg"}; + //String[] splitOnNullExpectedResults = { "ab", "de" } ; + + final String[] splitOnNullResults = StringUtils.splitByWholeSeparator(stringToSplitOnNulls, null, 2); + assertEquals(splitOnNullExpectedResults.length, splitOnNullResults.length); + for (int i = 0; i < splitOnNullExpectedResults.length; i += 1) { + assertEquals(splitOnNullExpectedResults[i], splitOnNullResults[i]); + } + + final String stringToSplitOnCharactersAndString = "abstemiouslyaeiouyabstemiouslyaeiouyabstemiously"; + + final String[] splitOnStringExpectedResults = {"abstemiously", "abstemiouslyaeiouyabstemiously"}; + //String[] splitOnStringExpectedResults = { "abstemiously", "abstemiously" } ; + final String[] splitOnStringResults = StringUtils.splitByWholeSeparator(stringToSplitOnCharactersAndString, "aeiouy", 2); + assertEquals(splitOnStringExpectedResults.length, splitOnStringResults.length); + for (int i = 0; i < splitOnStringExpectedResults.length; i++) { + assertEquals(splitOnStringExpectedResults[i], splitOnStringResults[i]); + } + } + + @Test + public void testSplitPreserveAllTokens_String() { + assertNull(StringUtils.splitPreserveAllTokens(null)); + assertEquals(0, StringUtils.splitPreserveAllTokens("").length); + + String str = "abc def"; + String[] res = StringUtils.splitPreserveAllTokens(str); + assertEquals(2, res.length); + assertEquals("abc", res[0]); + assertEquals("def", res[1]); + + str = "abc def"; + res = StringUtils.splitPreserveAllTokens(str); + assertEquals(3, res.length); + assertEquals("abc", res[0]); + assertEquals("", res[1]); + assertEquals("def", res[2]); + + str = " abc "; + res = StringUtils.splitPreserveAllTokens(str); + assertEquals(3, res.length); + assertEquals("", res[0]); + assertEquals("abc", res[1]); + assertEquals("", res[2]); + + str = "a b .c"; + res = StringUtils.splitPreserveAllTokens(str); + assertEquals(3, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals(".c", res[2]); + + str = " a b .c"; + res = StringUtils.splitPreserveAllTokens(str); + assertEquals(4, res.length); + assertEquals("", res[0]); + assertEquals("a", res[1]); + assertEquals("b", res[2]); + assertEquals(".c", res[3]); + + str = "a b .c"; + res = StringUtils.splitPreserveAllTokens(str); + assertEquals(5, res.length); + assertEquals("a", res[0]); + assertEquals("", res[1]); + assertEquals("b", res[2]); + assertEquals("", res[3]); + assertEquals(".c", res[4]); + + str = " a "; + res = StringUtils.splitPreserveAllTokens(str); + assertEquals(4, res.length); + assertEquals("", res[0]); + assertEquals("a", res[1]); + assertEquals("", res[2]); + assertEquals("", res[3]); + + str = " a b"; + res = StringUtils.splitPreserveAllTokens(str); + assertEquals(4, res.length); + assertEquals("", res[0]); + assertEquals("a", res[1]); + assertEquals("", res[2]); + assertEquals("b", res[3]); + + str = "a" + WHITESPACE + "b" + NON_WHITESPACE + "c"; + res = StringUtils.splitPreserveAllTokens(str); + assertEquals(WHITESPACE.length() + 1, res.length); + assertEquals("a", res[0]); + for (int i = 1; i < WHITESPACE.length() - 1; i++) { + assertEquals("", res[i]); + } + assertEquals("b" + NON_WHITESPACE + "c", res[WHITESPACE.length()]); + } + + @Test + public void testSplitPreserveAllTokens_StringChar() { + assertNull(StringUtils.splitPreserveAllTokens(null, '.')); + assertEquals(0, StringUtils.splitPreserveAllTokens("", '.').length); + + String str = "a.b. c"; + String[] res = StringUtils.splitPreserveAllTokens(str, '.'); + assertEquals(3, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals(" c", res[2]); + + str = "a.b.. c"; + res = StringUtils.splitPreserveAllTokens(str, '.'); + assertEquals(4, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals("", res[2]); + assertEquals(" c", res[3]); + + str = ".a."; + res = StringUtils.splitPreserveAllTokens(str, '.'); + assertEquals(3, res.length); + assertEquals("", res[0]); + assertEquals("a", res[1]); + assertEquals("", res[2]); + + str = ".a.."; + res = StringUtils.splitPreserveAllTokens(str, '.'); + assertEquals(4, res.length); + assertEquals("", res[0]); + assertEquals("a", res[1]); + assertEquals("", res[2]); + assertEquals("", res[3]); + + str = "..a."; + res = StringUtils.splitPreserveAllTokens(str, '.'); + assertEquals(4, res.length); + assertEquals("", res[0]); + assertEquals("", res[1]); + assertEquals("a", res[2]); + assertEquals("", res[3]); + + str = "..a"; + res = StringUtils.splitPreserveAllTokens(str, '.'); + assertEquals(3, res.length); + assertEquals("", res[0]); + assertEquals("", res[1]); + assertEquals("a", res[2]); + + str = "a b c"; + res = StringUtils.splitPreserveAllTokens(str, ' '); + assertEquals(3, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals("c", res[2]); + + str = "a b c"; + res = StringUtils.splitPreserveAllTokens(str, ' '); + assertEquals(5, res.length); + assertEquals("a", res[0]); + assertEquals("", res[1]); + assertEquals("b", res[2]); + assertEquals("", res[3]); + assertEquals("c", res[4]); + + str = " a b c"; + res = StringUtils.splitPreserveAllTokens(str, ' '); + assertEquals(4, res.length); + assertEquals("", res[0]); + assertEquals("a", res[1]); + assertEquals("b", res[2]); + assertEquals("c", res[3]); + + str = " a b c"; + res = StringUtils.splitPreserveAllTokens(str, ' '); + assertEquals(5, res.length); + assertEquals("", res[0]); + assertEquals("", res[1]); + assertEquals("a", res[2]); + assertEquals("b", res[3]); + assertEquals("c", res[4]); + + str = "a b c "; + res = StringUtils.splitPreserveAllTokens(str, ' '); + assertEquals(4, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals("c", res[2]); + assertEquals("", res[3]); + + str = "a b c "; + res = StringUtils.splitPreserveAllTokens(str, ' '); + assertEquals(5, res.length); + assertEquals("a", res[0]); + assertEquals("b", res[1]); + assertEquals("c", res[2]); + assertEquals("", res[3]); + assertEquals("", res[4]); + + // Match example in javadoc + { + final String[] results; + final String[] expectedResults = {"a", "", "b", "c"}; + results = StringUtils.splitPreserveAllTokens("a..b.c", '.'); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + } + + @Test + public void testSplitPreserveAllTokens_StringString_StringStringInt() { + assertNull(StringUtils.splitPreserveAllTokens(null, ".")); + assertNull(StringUtils.splitPreserveAllTokens(null, ".", 3)); + + assertEquals(0, StringUtils.splitPreserveAllTokens("", ".").length); + assertEquals(0, StringUtils.splitPreserveAllTokens("", ".", 3).length); + + innerTestSplitPreserveAllTokens('.', ".", ' '); + innerTestSplitPreserveAllTokens('.', ".", ','); + innerTestSplitPreserveAllTokens('.', ".,", 'x'); + for (int i = 0; i < WHITESPACE.length(); i++) { + for (int j = 0; j < NON_WHITESPACE.length(); j++) { + innerTestSplitPreserveAllTokens(WHITESPACE.charAt(i), null, NON_WHITESPACE.charAt(j)); + innerTestSplitPreserveAllTokens(WHITESPACE.charAt(i), String.valueOf(WHITESPACE.charAt(i)), NON_WHITESPACE.charAt(j)); + } + } + + { + final String[] results; + final String[] expectedResults = {"ab", "de fg"}; + results = StringUtils.splitPreserveAllTokens("ab de fg", null, 2); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"ab", " de fg"}; + results = StringUtils.splitPreserveAllTokens("ab de fg", null, 2); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"ab", "::de:fg"}; + results = StringUtils.splitPreserveAllTokens("ab:::de:fg", ":", 2); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"ab", "", " de fg"}; + results = StringUtils.splitPreserveAllTokens("ab de fg", null, 3); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"ab", "", "", "de fg"}; + results = StringUtils.splitPreserveAllTokens("ab de fg", null, 4); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] expectedResults = {"ab", "cd:ef"}; + final String[] results; + results = StringUtils.splitPreserveAllTokens("ab:cd:ef", ":", 2); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"ab", ":cd:ef"}; + results = StringUtils.splitPreserveAllTokens("ab::cd:ef", ":", 2); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"ab", "", ":cd:ef"}; + results = StringUtils.splitPreserveAllTokens("ab:::cd:ef", ":", 3); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"ab", "", "", "cd:ef"}; + results = StringUtils.splitPreserveAllTokens("ab:::cd:ef", ":", 4); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"", "ab", "", "", "cd:ef"}; + results = StringUtils.splitPreserveAllTokens(":ab:::cd:ef", ":", 5); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + { + final String[] results; + final String[] expectedResults = {"", "", "ab", "", "", "cd:ef"}; + results = StringUtils.splitPreserveAllTokens("::ab:::cd:ef", ":", 6); + assertEquals(expectedResults.length, results.length); + for (int i = 0; i < expectedResults.length; i++) { + assertEquals(expectedResults[i], results[i]); + } + } + + } + + // Methods on StringUtils that are immutable in spirit (i.e. calculate the length) + // should take a CharSequence parameter. Methods that are mutable in spirit (i.e. capitalize) + // should take a String or String[] parameter and return String or String[]. + // This test enforces that this is done. + @Test + public void testStringUtilsCharSequenceContract() { + final Class<StringUtils> c = StringUtils.class; + // Methods that are expressly excluded from testStringUtilsCharSequenceContract() + final String[] excludeMethods = { + "public static int org.apache.commons.lang3.StringUtils.compare(java.lang.String,java.lang.String)", + "public static int org.apache.commons.lang3.StringUtils.compare(java.lang.String,java.lang.String,boolean)", + "public static int org.apache.commons.lang3.StringUtils.compareIgnoreCase(java.lang.String,java.lang.String)", + "public static int org.apache.commons.lang3.StringUtils.compareIgnoreCase(java.lang.String,java.lang.String,boolean)", + "public static byte[] org.apache.commons.lang3.StringUtils.getBytes(java.lang.String,java.nio.charset.Charset)", + "public static byte[] org.apache.commons.lang3.StringUtils.getBytes(java.lang.String,java.lang.String) throws java.io.UnsupportedEncodingException" + }; + final Method[] methods = c.getMethods(); + + for (final Method m : methods) { + final String methodStr = m.toString(); + if (m.getReturnType() == String.class || m.getReturnType() == String[].class) { + // Assume this is mutable and ensure the first parameter is not CharSequence. + // It may be String or it may be something else (String[], Object, Object[]) so + // don't actively test for that. + final Class<?>[] params = m.getParameterTypes(); + if (params.length > 0 && (params[0] == CharSequence.class || params[0] == CharSequence[].class)) { + assertFalse(ArrayUtils.contains(excludeMethods, methodStr), "The method \"" + methodStr + "\" appears to be mutable in spirit and therefore must not accept a CharSequence"); + } + } else { + // Assume this is immutable in spirit and ensure the first parameter is not String. + // As above, it may be something other than CharSequence. + final Class<?>[] params = m.getParameterTypes(); + if (params.length > 0 && (params[0] == String.class || params[0] == String[].class)) { + assertTrue(ArrayUtils.contains(excludeMethods, methodStr), + "The method \"" + methodStr + "\" appears to be immutable in spirit and therefore must not accept a String"); + } + } + } + } + + @Test + public void testSwapCase_String() { + assertNull(StringUtils.swapCase(null)); + assertEquals("", StringUtils.swapCase("")); + assertEquals(" ", StringUtils.swapCase(" ")); + + assertEquals("i", WordUtils.swapCase("I")); + assertEquals("I", WordUtils.swapCase("i")); + assertEquals("I AM HERE 123", StringUtils.swapCase("i am here 123")); + assertEquals("i aM hERE 123", StringUtils.swapCase("I Am Here 123")); + assertEquals("I AM here 123", StringUtils.swapCase("i am HERE 123")); + assertEquals("i am here 123", StringUtils.swapCase("I AM HERE 123")); + + final String test = "This String contains a TitleCase character: \u01C8"; + final String expect = "tHIS sTRING CONTAINS A tITLEcASE CHARACTER: \u01C9"; + assertEquals(expect, WordUtils.swapCase(test)); + assertEquals(expect, StringUtils.swapCase(test)); + } + + @Test + public void testToCodePoints() { + final int orphanedHighSurrogate = 0xD801; + final int orphanedLowSurrogate = 0xDC00; + final int supplementary = 0x2070E; + + final int[] codePoints = {'a', orphanedHighSurrogate, 'b', 'c', supplementary, + 'd', orphanedLowSurrogate, 'e'}; + final String s = new String(codePoints, 0, codePoints.length); + assertArrayEquals(codePoints, StringUtils.toCodePoints(s)); + + assertNull(StringUtils.toCodePoints(null)); + assertArrayEquals(ArrayUtils.EMPTY_INT_ARRAY, StringUtils.toCodePoints("")); + } + + /** + * Tests {@link StringUtils#toEncodedString(byte[], Charset)} + * + * @see StringUtils#toEncodedString(byte[], Charset) + */ + @Test + public void testToEncodedString() { + final String expectedString = "The quick brown fox jumps over the lazy dog."; + String encoding = SystemUtils.FILE_ENCODING; + byte[] expectedBytes = expectedString.getBytes(Charset.defaultCharset()); + // sanity check start + assertArrayEquals(expectedBytes, expectedString.getBytes()); + // sanity check end + assertEquals(expectedString, StringUtils.toEncodedString(expectedBytes, Charset.defaultCharset())); + assertEquals(expectedString, StringUtils.toEncodedString(expectedBytes, Charset.forName(encoding))); + encoding = "UTF-16"; + expectedBytes = expectedString.getBytes(Charset.forName(encoding)); + assertEquals(expectedString, StringUtils.toEncodedString(expectedBytes, Charset.forName(encoding))); + } + + /** + * Tests {@link StringUtils#toString(byte[], String)} + * + * @throws java.io.UnsupportedEncodingException because the method under test max throw it + * @see StringUtils#toString(byte[], String) + */ + @Test + public void testToString() throws UnsupportedEncodingException { + final String expectedString = "The quick brown fox jumps over the lazy dog."; + byte[] expectedBytes = expectedString.getBytes(Charset.defaultCharset()); + // sanity check start + assertArrayEquals(expectedBytes, expectedString.getBytes()); + // sanity check end + assertEquals(expectedString, StringUtils.toString(expectedBytes, null)); + assertEquals(expectedString, StringUtils.toString(expectedBytes, SystemUtils.FILE_ENCODING)); + final String encoding = "UTF-16"; + expectedBytes = expectedString.getBytes(Charset.forName(encoding)); + assertEquals(expectedString, StringUtils.toString(expectedBytes, encoding)); + } + + @Test + public void testTruncate_StringInt() { + assertNull(StringUtils.truncate(null, 12)); + assertThrows( + IllegalArgumentException.class, () -> StringUtils.truncate(null, -1), "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, () -> StringUtils.truncate(null, -10), "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate(null, Integer.MIN_VALUE), + "maxWith cannot be negative"); + assertEquals("", StringUtils.truncate("", 10)); + assertEquals("abc", StringUtils.truncate("abcdefghij", 3)); + assertEquals("abcdef", StringUtils.truncate("abcdefghij", 6)); + assertEquals("", StringUtils.truncate("abcdefghij", 0)); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", -1), + "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", -100), + "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", Integer.MIN_VALUE), + "maxWith cannot be negative"); + assertEquals("abcdefghij", StringUtils.truncate("abcdefghijklmno", 10)); + assertEquals("abcdefghijklmno", StringUtils.truncate("abcdefghijklmno", Integer.MAX_VALUE)); + assertEquals("abcde", StringUtils.truncate("abcdefghijklmno", 5)); + assertEquals("abc", StringUtils.truncate("abcdefghijklmno", 3)); + } + + @Test + public void testTruncate_StringIntInt() { + assertNull(StringUtils.truncate(null, 0, 12)); + assertThrows( + IllegalArgumentException.class, () -> StringUtils.truncate(null, -1, 0), "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate(null, -10, -4), + "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate(null, Integer.MIN_VALUE, Integer.MIN_VALUE), + "offset cannot be negative"); + assertNull(StringUtils.truncate(null, 10, 12)); + assertEquals("", StringUtils.truncate("", 0, 10)); + assertEquals("", StringUtils.truncate("", 2, 10)); + assertEquals("abc", StringUtils.truncate("abcdefghij", 0, 3)); + assertEquals("fghij", StringUtils.truncate("abcdefghij", 5, 6)); + assertEquals("", StringUtils.truncate("abcdefghij", 0, 0)); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", 0, -1), + "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", 0, -10), + "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", 0, -100), + "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", 1, -100), + "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", 0, Integer.MIN_VALUE), + "maxWith cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", -1, 0), + "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", -10, 0), + "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", -100, 1), + "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", Integer.MIN_VALUE, 0), + "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", -1, -1), + "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", -10, -10), + "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", -100, -100), + "offset cannot be negative"); + assertThrows( + IllegalArgumentException.class, + () -> StringUtils.truncate("abcdefghij", Integer.MIN_VALUE, Integer.MIN_VALUE), + "offset cannot be negative"); + final String raspberry = "raspberry peach"; + assertEquals("peach", StringUtils.truncate(raspberry, 10, 15)); + assertEquals("abcdefghij", StringUtils.truncate("abcdefghijklmno", 0, 10)); + assertEquals("abcdefghijklmno", StringUtils.truncate("abcdefghijklmno", 0, Integer.MAX_VALUE)); + assertEquals("bcdefghijk", StringUtils.truncate("abcdefghijklmno", 1, 10)); + assertEquals("cdefghijkl", StringUtils.truncate("abcdefghijklmno", 2, 10)); + assertEquals("defghijklm", StringUtils.truncate("abcdefghijklmno", 3, 10)); + assertEquals("efghijklmn", StringUtils.truncate("abcdefghijklmno", 4, 10)); + assertEquals("fghijklmno", StringUtils.truncate("abcdefghijklmno", 5, 10)); + assertEquals("fghij", StringUtils.truncate("abcdefghijklmno", 5, 5)); + assertEquals("fgh", StringUtils.truncate("abcdefghijklmno", 5, 3)); + assertEquals("klm", StringUtils.truncate("abcdefghijklmno", 10, 3)); + assertEquals("klmno", StringUtils.truncate("abcdefghijklmno", 10, Integer.MAX_VALUE)); + assertEquals("n", StringUtils.truncate("abcdefghijklmno", 13, 1)); + assertEquals("no", StringUtils.truncate("abcdefghijklmno", 13, Integer.MAX_VALUE)); + assertEquals("o", StringUtils.truncate("abcdefghijklmno", 14, 1)); + assertEquals("o", StringUtils.truncate("abcdefghijklmno", 14, Integer.MAX_VALUE)); + assertEquals("", StringUtils.truncate("abcdefghijklmno", 15, 1)); + assertEquals("", StringUtils.truncate("abcdefghijklmno", 15, Integer.MAX_VALUE)); + assertEquals("", StringUtils.truncate("abcdefghijklmno", Integer.MAX_VALUE, Integer.MAX_VALUE)); + } + + @Test + public void testUnCapitalize() { + assertNull(StringUtils.uncapitalize(null)); + + assertEquals(FOO_UNCAP, StringUtils.uncapitalize(FOO_CAP), "uncapitalize(String) failed"); + assertEquals(FOO_UNCAP, StringUtils.uncapitalize(FOO_UNCAP), "uncapitalize(string) failed"); + assertEquals("", StringUtils.uncapitalize(""), "uncapitalize(empty-string) failed"); + assertEquals("x", StringUtils.uncapitalize("X"), "uncapitalize(single-char-string) failed"); + + // Examples from uncapitalize Javadoc + assertEquals("cat", StringUtils.uncapitalize("cat")); + assertEquals("cat", StringUtils.uncapitalize("Cat")); + assertEquals("cAT", StringUtils.uncapitalize("CAT")); + } + + @Test + public void testUnescapeSurrogatePairs() { + assertEquals("\uD83D\uDE30", StringEscapeUtils.unescapeCsv("\uD83D\uDE30")); + // Examples from https://en.wikipedia.org/wiki/UTF-16 + assertEquals("\uD800\uDC00", StringEscapeUtils.unescapeCsv("\uD800\uDC00")); + assertEquals("\uD834\uDD1E", StringEscapeUtils.unescapeCsv("\uD834\uDD1E")); + assertEquals("\uDBFF\uDFFD", StringEscapeUtils.unescapeCsv("\uDBFF\uDFFD")); + assertEquals("\uDBFF\uDFFD", StringEscapeUtils.unescapeHtml3("\uDBFF\uDFFD")); + assertEquals("\uDBFF\uDFFD", StringEscapeUtils.unescapeHtml4("\uDBFF\uDFFD")); + } + + @Test + public void testUnwrap_StringChar() { + assertNull(StringUtils.unwrap(null, null)); + assertNull(StringUtils.unwrap(null, CharUtils.NUL)); + assertNull(StringUtils.unwrap(null, '1')); + + assertEquals("abc", StringUtils.unwrap("abc", null)); + assertEquals("a", StringUtils.unwrap("a", "a")); + assertEquals("", StringUtils.unwrap("aa", "a")); + assertEquals("abc", StringUtils.unwrap("\'abc\'", '\'')); + assertEquals("abc", StringUtils.unwrap("AabcA", 'A')); + assertEquals("AabcA", StringUtils.unwrap("AAabcAA", 'A')); + assertEquals("abc", StringUtils.unwrap("abc", 'b')); + assertEquals("#A", StringUtils.unwrap("#A", '#')); + assertEquals("A#", StringUtils.unwrap("A#", '#')); + assertEquals("ABA", StringUtils.unwrap("AABAA", 'A')); + } + + @Test + public void testUnwrap_StringString() { + assertNull(StringUtils.unwrap(null, null)); + assertNull(StringUtils.unwrap(null, "")); + assertNull(StringUtils.unwrap(null, "1")); + + assertEquals("abc", StringUtils.unwrap("abc", null)); + assertEquals("abc", StringUtils.unwrap("abc", "")); + assertEquals("a", StringUtils.unwrap("a", "a")); + assertEquals("ababa", StringUtils.unwrap("ababa", "aba")); + assertEquals("", StringUtils.unwrap("aa", "a")); + assertEquals("abc", StringUtils.unwrap("\'abc\'", "\'")); + assertEquals("abc", StringUtils.unwrap("\"abc\"", "\"")); + assertEquals("abc\"xyz", StringUtils.unwrap("\"abc\"xyz\"", "\"")); + assertEquals("abc\"xyz\"", StringUtils.unwrap("\"abc\"xyz\"\"", "\"")); + assertEquals("abc\'xyz\'", StringUtils.unwrap("\"abc\'xyz\'\"", "\"")); + assertEquals("\"abc\'xyz\'\"", StringUtils.unwrap("AA\"abc\'xyz\'\"AA", "AA")); + assertEquals("\"abc\'xyz\'\"", StringUtils.unwrap("123\"abc\'xyz\'\"123", "123")); + assertEquals("AA\"abc\'xyz\'\"", StringUtils.unwrap("AA\"abc\'xyz\'\"", "AA")); + assertEquals("AA\"abc\'xyz\'\"AA", StringUtils.unwrap("AAA\"abc\'xyz\'\"AAA", "A")); + assertEquals("\"abc\'xyz\'\"AA", StringUtils.unwrap("\"abc\'xyz\'\"AA", "AA")); + } + + @Test + public void testUpperCase() { + assertNull(StringUtils.upperCase(null)); + assertNull(StringUtils.upperCase(null, Locale.ENGLISH)); + assertEquals("FOO TEST THING", StringUtils.upperCase("fOo test THING"), "upperCase(String) failed"); + assertEquals("", StringUtils.upperCase(""), "upperCase(empty-string) failed"); + assertEquals("FOO TEST THING", StringUtils.upperCase("fOo test THING", Locale.ENGLISH), + "upperCase(String, Locale) failed"); + assertEquals("", StringUtils.upperCase("", Locale.ENGLISH), + "upperCase(empty-string, Locale) failed"); + } + + @Test + public void testWrap_StringChar() { + assertNull(StringUtils.wrap(null, CharUtils.NUL)); + assertNull(StringUtils.wrap(null, '1')); + + assertEquals("", StringUtils.wrap("", CharUtils.NUL)); + assertEquals("xabx", StringUtils.wrap("ab", 'x')); + assertEquals("\"ab\"", StringUtils.wrap("ab", '\"')); + assertEquals("\"\"ab\"\"", StringUtils.wrap("\"ab\"", '\"')); + assertEquals("'ab'", StringUtils.wrap("ab", '\'')); + assertEquals("''abcd''", StringUtils.wrap("'abcd'", '\'')); + assertEquals("'\"abcd\"'", StringUtils.wrap("\"abcd\"", '\'')); + assertEquals("\"'abcd'\"", StringUtils.wrap("'abcd'", '\"')); + } + + @Test + public void testWrap_StringString() { + assertNull(StringUtils.wrap(null, null)); + assertNull(StringUtils.wrap(null, "")); + assertNull(StringUtils.wrap(null, "1")); + + assertNull(StringUtils.wrap(null, null)); + assertEquals("", StringUtils.wrap("", "")); + assertEquals("ab", StringUtils.wrap("ab", null)); + assertEquals("xabx", StringUtils.wrap("ab", "x")); + assertEquals("\"ab\"", StringUtils.wrap("ab", "\"")); + assertEquals("\"\"ab\"\"", StringUtils.wrap("\"ab\"", "\"")); + assertEquals("'ab'", StringUtils.wrap("ab", "'")); + assertEquals("''abcd''", StringUtils.wrap("'abcd'", "'")); + assertEquals("'\"abcd\"'", StringUtils.wrap("\"abcd\"", "'")); + assertEquals("\"'abcd'\"", StringUtils.wrap("'abcd'", "\"")); + } + + @Test + public void testWrapIfMissing_StringChar() { + assertNull(StringUtils.wrapIfMissing(null, CharUtils.NUL)); + assertNull(StringUtils.wrapIfMissing(null, '1')); + + assertEquals("", StringUtils.wrapIfMissing("", CharUtils.NUL)); + assertEquals("xabx", StringUtils.wrapIfMissing("ab", 'x')); + assertEquals("\"ab\"", StringUtils.wrapIfMissing("ab", '\"')); + assertEquals("\"ab\"", StringUtils.wrapIfMissing("\"ab\"", '\"')); + assertEquals("'ab'", StringUtils.wrapIfMissing("ab", '\'')); + assertEquals("'abcd'", StringUtils.wrapIfMissing("'abcd'", '\'')); + assertEquals("'\"abcd\"'", StringUtils.wrapIfMissing("\"abcd\"", '\'')); + assertEquals("\"'abcd'\"", StringUtils.wrapIfMissing("'abcd'", '\"')); + assertEquals("/x/", StringUtils.wrapIfMissing("x", '/')); + assertEquals("/x/y/z/", StringUtils.wrapIfMissing("x/y/z", '/')); + assertEquals("/x/y/z/", StringUtils.wrapIfMissing("/x/y/z", '/')); + assertEquals("/x/y/z/", StringUtils.wrapIfMissing("x/y/z/", '/')); + + assertSame("/", StringUtils.wrapIfMissing("/", '/')); + assertSame("/x/", StringUtils.wrapIfMissing("/x/", '/')); + } + + @Test + public void testWrapIfMissing_StringString() { + assertNull(StringUtils.wrapIfMissing(null, "\0")); + assertNull(StringUtils.wrapIfMissing(null, "1")); + + assertEquals("", StringUtils.wrapIfMissing("", "\0")); + assertEquals("xabx", StringUtils.wrapIfMissing("ab", "x")); + assertEquals("\"ab\"", StringUtils.wrapIfMissing("ab", "\"")); + assertEquals("\"ab\"", StringUtils.wrapIfMissing("\"ab\"", "\"")); + assertEquals("'ab'", StringUtils.wrapIfMissing("ab", "\'")); + assertEquals("'abcd'", StringUtils.wrapIfMissing("'abcd'", "\'")); + assertEquals("'\"abcd\"'", StringUtils.wrapIfMissing("\"abcd\"", "\'")); + assertEquals("\"'abcd'\"", StringUtils.wrapIfMissing("'abcd'", "\"")); + assertEquals("/x/", StringUtils.wrapIfMissing("x", "/")); + assertEquals("/x/y/z/", StringUtils.wrapIfMissing("x/y/z", "/")); + assertEquals("/x/y/z/", StringUtils.wrapIfMissing("/x/y/z", "/")); + assertEquals("/x/y/z/", StringUtils.wrapIfMissing("x/y/z/", "/")); + assertEquals("/", StringUtils.wrapIfMissing("/", "/")); + assertEquals("ab/ab", StringUtils.wrapIfMissing("/", "ab")); + + assertSame("ab/ab", StringUtils.wrapIfMissing("ab/ab", "ab")); + assertSame("//x//", StringUtils.wrapIfMissing("//x//", "//")); + } + + @Test + public void testToRootLowerCase() { + assertNull(StringUtils.toRootLowerCase(null)); + assertEquals("a", StringUtils.toRootLowerCase("A")); + assertEquals("a", StringUtils.toRootLowerCase("a")); + final Locale TURKISH = Locale.forLanguageTag("tr"); + // Sanity checks: + assertNotEquals("title", "TITLE".toLowerCase(TURKISH)); + assertEquals("title", "TITLE".toLowerCase(Locale.ROOT)); + assertEquals("title", StringUtils.toRootLowerCase("TITLE")); + // Make sure we are not using the default Locale: + final Locale defaultLocale = Locale.getDefault(); + try { + Locale.setDefault(TURKISH); + assertEquals("title", StringUtils.toRootLowerCase("TITLE")); + } finally { + Locale.setDefault(defaultLocale); + } + } + + @Test + public void testToRootUpperCase() { + assertNull(StringUtils.toRootUpperCase(null)); + assertEquals("A", StringUtils.toRootUpperCase("a")); + assertEquals("A", StringUtils.toRootUpperCase("A")); + final Locale TURKISH = Locale.forLanguageTag("tr"); + // Sanity checks: + assertNotEquals("TITLE", "title".toUpperCase(TURKISH)); + assertEquals("TITLE", "title".toUpperCase(Locale.ROOT)); + assertEquals("TITLE", StringUtils.toRootUpperCase("title")); + // Make sure we are not using the default Locale: + final Locale defaultLocale = Locale.getDefault(); + try { + Locale.setDefault(TURKISH); + assertEquals("TITLE", StringUtils.toRootUpperCase("title")); + } finally { + Locale.setDefault(defaultLocale); + } + } + + @Test + public void testGeorgianSample() { + final char[] arrayI = { + //Latin Small Letter dotless I + (char) 0x0131, + //Greek Capital Letter Theta + (char) 0x03F4 + }; + final char[] arrayJ = { + //Latin Capital Letter I with dot above + (char) 0x0130, + //Greek Theta Symbol + (char) 0x03D1 + }; + for (final char i : arrayI) { + for (final char j : arrayJ) { + final String si = String.valueOf(i); + final String sj = String.valueOf(j); + final boolean res1 = si.equalsIgnoreCase(sj); + final CharSequence ci = new StringBuilder(si); + final CharSequence cj = new StringBuilder(sj); + boolean res2 = StringUtils.startsWithIgnoreCase(ci, cj); + assertEquals(res1, res2, "si : " + si + " sj : " + sj); + res2 = StringUtils.endsWithIgnoreCase(ci, cj); + assertEquals(res1, res2, "si : " + si + " sj : " + sj); + res2 = StringUtils.compareIgnoreCase(ci.toString(), cj.toString()) == 0; + assertEquals(res1, res2, "si : " + si + " sj : " + sj); + res2 = StringUtils.indexOfIgnoreCase(ci.toString(), cj.toString()) == 0; + assertEquals(res1, res2, "si : " + si + " sj : " + sj); + res2 = StringUtils.lastIndexOfIgnoreCase(ci.toString(), cj.toString()) == 0; + assertEquals(res1, res2, "si : " + si + " sj : " + sj); + } + } + } +} |