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Diffstat (limited to 'src/test/java/org/apache/commons/lang3/StringUtilsTrimStripTest.java')
| -rw-r--r-- | src/test/java/org/apache/commons/lang3/StringUtilsTrimStripTest.java | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/lang3/StringUtilsTrimStripTest.java b/src/test/java/org/apache/commons/lang3/StringUtilsTrimStripTest.java new file mode 100644 index 000000000..79bff3f1e --- /dev/null +++ b/src/test/java/org/apache/commons/lang3/StringUtilsTrimStripTest.java @@ -0,0 +1,248 @@ +/* + * 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.assertNull; + +import org.junit.jupiter.api.Disabled; +import org.junit.jupiter.api.Test; + +/** + * Unit tests {@link org.apache.commons.lang3.StringUtils} - Trim/Strip methods + */ +public class StringUtilsTrimStripTest extends AbstractLangTest { + private static final String FOO = "foo"; + + @Test + public void testTrim() { + assertEquals(FOO, StringUtils.trim(FOO + " ")); + assertEquals(FOO, StringUtils.trim(" " + FOO + " ")); + assertEquals(FOO, StringUtils.trim(" " + FOO)); + assertEquals(FOO, StringUtils.trim(FOO + "")); + assertEquals("", StringUtils.trim(" \t\r\n\b ")); + assertEquals("", StringUtils.trim(StringUtilsTest.TRIMMABLE)); + assertEquals(StringUtilsTest.NON_TRIMMABLE, StringUtils.trim(StringUtilsTest.NON_TRIMMABLE)); + assertEquals("", StringUtils.trim("")); + assertNull(StringUtils.trim(null)); + } + + @Test + public void testTrimToNull() { + assertEquals(FOO, StringUtils.trimToNull(FOO + " ")); + assertEquals(FOO, StringUtils.trimToNull(" " + FOO + " ")); + assertEquals(FOO, StringUtils.trimToNull(" " + FOO)); + assertEquals(FOO, StringUtils.trimToNull(FOO + "")); + assertNull(StringUtils.trimToNull(" \t\r\n\b ")); + assertNull(StringUtils.trimToNull(StringUtilsTest.TRIMMABLE)); + assertEquals(StringUtilsTest.NON_TRIMMABLE, StringUtils.trimToNull(StringUtilsTest.NON_TRIMMABLE)); + assertNull(StringUtils.trimToNull("")); + assertNull(StringUtils.trimToNull(null)); + } + + @Test + public void testTrimToEmpty() { + assertEquals(FOO, StringUtils.trimToEmpty(FOO + " ")); + assertEquals(FOO, StringUtils.trimToEmpty(" " + FOO + " ")); + assertEquals(FOO, StringUtils.trimToEmpty(" " + FOO)); + assertEquals(FOO, StringUtils.trimToEmpty(FOO + "")); + assertEquals("", StringUtils.trimToEmpty(" \t\r\n\b ")); + assertEquals("", StringUtils.trimToEmpty(StringUtilsTest.TRIMMABLE)); + assertEquals(StringUtilsTest.NON_TRIMMABLE, StringUtils.trimToEmpty(StringUtilsTest.NON_TRIMMABLE)); + assertEquals("", StringUtils.trimToEmpty("")); + assertEquals("", StringUtils.trimToEmpty(null)); + } + + @Test + public void testStrip_String() { + assertNull(StringUtils.strip(null)); + assertEquals("", StringUtils.strip("")); + assertEquals("", StringUtils.strip(" ")); + assertEquals("abc", StringUtils.strip(" abc ")); + assertEquals(StringUtilsTest.NON_WHITESPACE, + StringUtils.strip(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE)); + } + + @Test + public void testStripToNull_String() { + assertNull(StringUtils.stripToNull(null)); + assertNull(StringUtils.stripToNull("")); + assertNull(StringUtils.stripToNull(" ")); + assertNull(StringUtils.stripToNull(StringUtilsTest.WHITESPACE)); + assertEquals("ab c", StringUtils.stripToNull(" ab c ")); + assertEquals(StringUtilsTest.NON_WHITESPACE, + StringUtils.stripToNull(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE)); + } + + @Test + public void testStripToEmpty_String() { + assertEquals("", StringUtils.stripToEmpty(null)); + assertEquals("", StringUtils.stripToEmpty("")); + assertEquals("", StringUtils.stripToEmpty(" ")); + assertEquals("", StringUtils.stripToEmpty(StringUtilsTest.WHITESPACE)); + assertEquals("ab c", StringUtils.stripToEmpty(" ab c ")); + assertEquals(StringUtilsTest.NON_WHITESPACE, + StringUtils.stripToEmpty(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE)); + } + + @Test + public void testStrip_StringString() { + // null strip + assertNull(StringUtils.strip(null, null)); + assertEquals("", StringUtils.strip("", null)); + assertEquals("", StringUtils.strip(" ", null)); + assertEquals("abc", StringUtils.strip(" abc ", null)); + assertEquals(StringUtilsTest.NON_WHITESPACE, + StringUtils.strip(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE, null)); + + // "" strip + assertNull(StringUtils.strip(null, "")); + assertEquals("", StringUtils.strip("", "")); + assertEquals(" ", StringUtils.strip(" ", "")); + assertEquals(" abc ", StringUtils.strip(" abc ", "")); + assertEquals(StringUtilsTest.WHITESPACE, StringUtils.strip(StringUtilsTest.WHITESPACE, "")); + + // " " strip + assertNull(StringUtils.strip(null, " ")); + assertEquals("", StringUtils.strip("", " ")); + assertEquals("", StringUtils.strip(" ", " ")); + assertEquals("abc", StringUtils.strip(" abc ", " ")); + + // "ab" strip + assertNull(StringUtils.strip(null, "ab")); + assertEquals("", StringUtils.strip("", "ab")); + assertEquals(" ", StringUtils.strip(" ", "ab")); + assertEquals(" abc ", StringUtils.strip(" abc ", "ab")); + assertEquals("c", StringUtils.strip("abcabab", "ab")); + assertEquals(StringUtilsTest.WHITESPACE, StringUtils.strip(StringUtilsTest.WHITESPACE, "")); + } + + @Test + public void testStripStart_StringString() { + // null stripStart + assertNull(StringUtils.stripStart(null, null)); + assertEquals("", StringUtils.stripStart("", null)); + assertEquals("", StringUtils.stripStart(" ", null)); + assertEquals("abc ", StringUtils.stripStart(" abc ", null)); + assertEquals(StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE, + StringUtils.stripStart(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE, null)); + + // "" stripStart + assertNull(StringUtils.stripStart(null, "")); + assertEquals("", StringUtils.stripStart("", "")); + assertEquals(" ", StringUtils.stripStart(" ", "")); + assertEquals(" abc ", StringUtils.stripStart(" abc ", "")); + assertEquals(StringUtilsTest.WHITESPACE, StringUtils.stripStart(StringUtilsTest.WHITESPACE, "")); + + // " " stripStart + assertNull(StringUtils.stripStart(null, " ")); + assertEquals("", StringUtils.stripStart("", " ")); + assertEquals("", StringUtils.stripStart(" ", " ")); + assertEquals("abc ", StringUtils.stripStart(" abc ", " ")); + + // "ab" stripStart + assertNull(StringUtils.stripStart(null, "ab")); + assertEquals("", StringUtils.stripStart("", "ab")); + assertEquals(" ", StringUtils.stripStart(" ", "ab")); + assertEquals(" abc ", StringUtils.stripStart(" abc ", "ab")); + assertEquals("cabab", StringUtils.stripStart("abcabab", "ab")); + assertEquals(StringUtilsTest.WHITESPACE, StringUtils.stripStart(StringUtilsTest.WHITESPACE, "")); + } + + @Test + public void testStripEnd_StringString() { + // null stripEnd + assertNull(StringUtils.stripEnd(null, null)); + assertEquals("", StringUtils.stripEnd("", null)); + assertEquals("", StringUtils.stripEnd(" ", null)); + assertEquals(" abc", StringUtils.stripEnd(" abc ", null)); + assertEquals(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE, + StringUtils.stripEnd(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE, null)); + + // "" stripEnd + assertNull(StringUtils.stripEnd(null, "")); + assertEquals("", StringUtils.stripEnd("", "")); + assertEquals(" ", StringUtils.stripEnd(" ", "")); + assertEquals(" abc ", StringUtils.stripEnd(" abc ", "")); + assertEquals(StringUtilsTest.WHITESPACE, StringUtils.stripEnd(StringUtilsTest.WHITESPACE, "")); + + // " " stripEnd + assertNull(StringUtils.stripEnd(null, " ")); + assertEquals("", StringUtils.stripEnd("", " ")); + assertEquals("", StringUtils.stripEnd(" ", " ")); + assertEquals(" abc", StringUtils.stripEnd(" abc ", " ")); + + // "ab" stripEnd + assertNull(StringUtils.stripEnd(null, "ab")); + assertEquals("", StringUtils.stripEnd("", "ab")); + assertEquals(" ", StringUtils.stripEnd(" ", "ab")); + assertEquals(" abc ", StringUtils.stripEnd(" abc ", "ab")); + assertEquals("abc", StringUtils.stripEnd("abcabab", "ab")); + assertEquals(StringUtilsTest.WHITESPACE, StringUtils.stripEnd(StringUtilsTest.WHITESPACE, "")); + } + + @Test + public void testStripAll() { + // test stripAll method, merely an array version of the above strip + final String[] empty = {}; + final String[] fooSpace = { " "+FOO+" ", " "+FOO, FOO+" " }; + final String[] fooDots = { ".."+FOO+"..", ".."+FOO, FOO+".." }; + final String[] foo = { FOO, FOO, FOO }; + + assertNull(StringUtils.stripAll((String[]) null)); + // Additional varargs tests + assertArrayEquals(empty, StringUtils.stripAll()); // empty array + assertArrayEquals(new String[]{null}, StringUtils.stripAll((String) null)); // == new String[]{null} + + assertArrayEquals(empty, StringUtils.stripAll(empty)); + assertArrayEquals(foo, StringUtils.stripAll(fooSpace)); + + assertNull(StringUtils.stripAll(null, null)); + assertArrayEquals(foo, StringUtils.stripAll(fooSpace, null)); + assertArrayEquals(foo, StringUtils.stripAll(fooDots, ".")); + } + + @Test + public void testStripAccents() { + final String cue = "\u00C7\u00FA\u00EA"; + assertEquals("Cue", StringUtils.stripAccents(cue), "Failed to strip accents from " + cue); + + final String lots = "\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5\u00C7\u00C8\u00C9" + + "\u00CA\u00CB\u00CC\u00CD\u00CE\u00CF\u00D1\u00D2\u00D3" + + "\u00D4\u00D5\u00D6\u00D9\u00DA\u00DB\u00DC\u00DD"; + assertEquals("AAAAAACEEEEIIIINOOOOOUUUUY", + StringUtils.stripAccents(lots), + "Failed to strip accents from " + lots); + + assertNull(StringUtils.stripAccents(null), "Failed null safety"); + assertEquals("", StringUtils.stripAccents(""), "Failed empty String"); + assertEquals("control", StringUtils.stripAccents("control"), "Failed to handle non-accented text"); + assertEquals("eclair", StringUtils.stripAccents("\u00E9clair"), "Failed to handle easy example"); + assertEquals("ALOSZZCN aloszzcn", StringUtils.stripAccents("\u0104\u0141\u00D3\u015A\u017B\u0179\u0106\u0143 " + + "\u0105\u0142\u00F3\u015B\u017C\u017A\u0107\u0144")); + } + + @Test + @Disabled + public void testStripAccents_Korean() { + // LANG-1655 + final String input = "잊지마 넌 흐린 어둠사이 왼손으로 그린 별 하나"; + assertEquals(input, StringUtils.stripAccents(input), "Failed to handle non-accented text"); + + } +} |