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/*
* 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;
/**
* Tests {@link StringUtils} Trim/Strip methods.
*/
public class StringUtilsTrimStripTest extends AbstractLangTest {
private static final String FOO = "foo";
@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 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 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("ALOSZZCND aloszzcnd",
StringUtils.stripAccents("\u0104\u0141\u00D3\u015A\u017B\u0179\u0106\u0143\u0110 \u0105\u0142\u00F3\u015B\u017C\u017A\u0107\u0144\u0111"));
assertEquals("The cafe\u2019s pinata gave me deja vu.", StringUtils.stripAccents("The caf\u00e9\u2019s pi\u00f1ata gave me d\u00e9j\u00e0 vu."),
"Failed to handle accented text");
assertEquals("fluid quest", StringUtils.stripAccents("\ufb02uid que\ufb06"), "Failed to handle ligatures");
assertEquals("a b c 1 2 3", StringUtils.stripAccents("\u1d43 \u1d47 \u1d9c \u00b9 \u00b2 \u00b3"), "Failed to handle superscript text");
assertEquals("math italic",
StringUtils.stripAccents("\uD835\uDC5A\uD835\uDC4E\uD835\uDC61\u210E \uD835\uDC56\uD835\uDC61\uD835\uDC4E\uD835\uDC59\uD835\uDC56\uD835\uDC50"),
"Failed to handle UTF32 example");
assertEquals("\uD83D\uDF01 \uD83D\uDF02 \uD83D\uDF03 \uD83D\uDF04", StringUtils.stripAccents("\uD83D\uDF01 \uD83D\uDF02 \uD83D\uDF03 \uD83D\uDF04"),
"Failed to handle non-accented text");
}
@Test
@Disabled
public void testStripAccents_Korean() {
// LANG-1655
final String input = "\uC78A\uC9C0\uB9C8 \uB10C \uD750\uB9B0 \uC5B4\uB460\uC0AC\uC774 \uC67C\uC190\uC73C\uB85C \uADF8\uB9B0 \uBCC4 \uD558\uB098";
assertEquals(input, StringUtils.stripAccents(input), "Failed to handle Korean text");
}
@Test
public void testStripAccentsIWithBar() {
assertEquals("I i I i I", StringUtils.stripAccents("\u0197 \u0268 \u1D7B \u1DA4 \u1DA7"));
}
@Test
public void testStripAccentsUWithBar() {
assertEquals("U u U u", StringUtils.stripAccents("\u0244 \u0289 \u1D7E \u1DB6"));
}
@Test
public void testStripAccentsTWithStroke() {
assertEquals("T t", StringUtils.stripAccents("\u0166 \u0167"));
}
@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 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 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 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 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 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 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 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));
}
}
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