/*
* 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.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
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.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.Locale;
import org.apache.commons.lang3.text.WordUtils;
import org.junit.Test;
/**
* Unit tests {@link org.apache.commons.lang3.StringUtils}.
*
* @version $Id$
*/
@SuppressWarnings("deprecation") // deliberate use of deprecated code
public class StringUtilsTest {
static final String WHITESPACE;
static final String NON_WHITESPACE;
static final String HARD_SPACE;
static final String TRIMMABLE;
static final String NON_TRIMMABLE;
static {
String ws = "";
String nws = "";
String hs = String.valueOf(((char) 160));
String tr = "";
String ntr = "";
for (int i = 0; i < Character.MAX_VALUE; i++) {
if (Character.isWhitespace((char) i)) {
ws += String.valueOf((char) i);
if (i > 32) {
ntr += String.valueOf((char) i);
}
} else if (i < 40) {
nws += String.valueOf((char) i);
}
}
for (int i = 0; i <= 32; i++) {
tr += String.valueOf((char) i);
}
WHITESPACE = ws;
NON_WHITESPACE = nws;
HARD_SPACE = hs;
TRIMMABLE = tr;
NON_TRIMMABLE = ntr;
}
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 String SEPARATOR = ",";
private static final char 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";
//-----------------------------------------------------------------------
@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 testisEmpty(){
assertTrue(StringUtils.isEmpty(null));
assertTrue(StringUtils.isEmpty(""));
assertFalse(StringUtils.isEmpty(" "));
assertFalse(StringUtils.isEmpty("bob"));
assertFalse(StringUtils.isEmpty(" bob "));
}
@Test
public void testisNotEmpty(){
assertFalse(StringUtils.isNotEmpty(null));
assertFalse(StringUtils.isNotEmpty(""));
assertTrue(StringUtils.isNotEmpty(" "));
assertTrue(StringUtils.isNotEmpty("bob"));
assertTrue(StringUtils.isNotEmpty(" bob "));
}
@Test
public void testisAnyEmpty(){
assertTrue(StringUtils.isAnyEmpty(null));
assertTrue(StringUtils.isAnyEmpty(null, "foo"));
assertTrue(StringUtils.isAnyEmpty("", "bar"));
assertTrue(StringUtils.isAnyEmpty("bob", ""));
assertTrue(StringUtils.isAnyEmpty(" bob ", null));
assertFalse(StringUtils.isAnyEmpty(" ","bar"));
assertFalse(StringUtils.isAnyEmpty("foo","bar"));
}
@Test
public void testisNoneEmpty(){
assertFalse(StringUtils.isNoneEmpty(null));
assertFalse(StringUtils.isNoneEmpty(null, "foo"));
assertFalse(StringUtils.isNoneEmpty("", "bar"));
assertFalse(StringUtils.isNoneEmpty("bob", ""));
assertFalse(StringUtils.isNoneEmpty(" bob ", null));
assertTrue(StringUtils.isNoneEmpty(" ", "bar"));
assertTrue(StringUtils.isNoneEmpty("foo", "bar"));
}
@Test
public void testisBlank(){
assertTrue(StringUtils.isBlank(null));
assertTrue(StringUtils.isBlank(""));
assertTrue(StringUtils.isBlank(" "));
assertFalse(StringUtils.isBlank("bob"));
assertFalse(StringUtils.isBlank(" bob "));
}
@Test
public void testisNotBlank(){
assertFalse(StringUtils.isNotBlank(null));
assertFalse(StringUtils.isNotBlank(""));
assertFalse(StringUtils.isNotBlank(" "));
assertTrue(StringUtils.isNotBlank("bob"));
assertTrue(StringUtils.isNotBlank(" bob "));
}
@Test
public void testisAnyBlank(){
assertTrue(StringUtils.isAnyBlank(null));
assertTrue(StringUtils.isAnyBlank(null, "foo"));
assertTrue(StringUtils.isAnyBlank(null, null));
assertTrue(StringUtils.isAnyBlank("", "bar"));
assertTrue(StringUtils.isAnyBlank("bob", ""));
assertTrue(StringUtils.isAnyBlank(" bob ", null));
assertTrue(StringUtils.isAnyBlank(" ","bar"));
assertFalse(StringUtils.isAnyBlank("foo","bar"));
}
@Test
public void testisNoneBlank(){
assertFalse(StringUtils.isNoneBlank(null));
assertFalse(StringUtils.isNoneBlank(null, "foo"));
assertFalse(StringUtils.isNoneBlank(null, null));
assertFalse(StringUtils.isNoneBlank("", "bar"));
assertFalse(StringUtils.isNoneBlank("bob", ""));
assertFalse(StringUtils.isNoneBlank(" bob ", null));
assertFalse(StringUtils.isNoneBlank(" ", "bar"));
assertTrue(StringUtils.isNoneBlank("foo", "bar"));
}
//-----------------------------------------------------------------------
@Test
public void testCaseFunctions() {
assertEquals(null, StringUtils.upperCase(null));
assertEquals(null, StringUtils.upperCase(null, Locale.ENGLISH));
assertEquals(null, StringUtils.lowerCase(null));
assertEquals(null, StringUtils.lowerCase(null, Locale.ENGLISH));
assertEquals(null, StringUtils.capitalize(null));
assertEquals(null, StringUtils.uncapitalize(null));
assertEquals("capitalize(empty-string) failed",
"", StringUtils.capitalize("") );
assertEquals("capitalize(single-char-string) failed",
"X", StringUtils.capitalize("x") );
assertEquals("capitalize(String) failed",
FOO_CAP, StringUtils.capitalize(FOO_CAP) );
assertEquals("capitalize(string) failed",
FOO_CAP, StringUtils.capitalize(FOO_UNCAP) );
assertEquals("uncapitalize(String) failed",
FOO_UNCAP, StringUtils.uncapitalize(FOO_CAP) );
assertEquals("uncapitalize(string) failed",
FOO_UNCAP, StringUtils.uncapitalize(FOO_UNCAP) );
assertEquals("uncapitalize(empty-string) failed",
"", StringUtils.uncapitalize("") );
assertEquals("uncapitalize(single-char-string) failed",
"x", StringUtils.uncapitalize("X") );
// reflection type of tests: Sentences.
assertEquals("uncapitalize(capitalize(String)) failed",
SENTENCE_UNCAP, StringUtils.uncapitalize(StringUtils.capitalize(SENTENCE_UNCAP)) );
assertEquals("capitalize(uncapitalize(String)) failed",
SENTENCE_CAP, StringUtils.capitalize(StringUtils.uncapitalize(SENTENCE_CAP)) );
// reflection type of tests: One word.
assertEquals("uncapitalize(capitalize(String)) failed",
FOO_UNCAP, StringUtils.uncapitalize(StringUtils.capitalize(FOO_UNCAP)) );
assertEquals("capitalize(uncapitalize(String)) failed",
FOO_CAP, StringUtils.capitalize(StringUtils.uncapitalize(FOO_CAP)) );
assertEquals("upperCase(String) failed",
"FOO TEST THING", StringUtils.upperCase("fOo test THING") );
assertEquals("upperCase(empty-string) failed",
"", StringUtils.upperCase("") );
assertEquals("lowerCase(String) failed",
"foo test thing", StringUtils.lowerCase("fOo test THING") );
assertEquals("lowerCase(empty-string) failed",
"", StringUtils.lowerCase("") );
assertEquals("upperCase(String, Locale) failed",
"FOO TEST THING", StringUtils.upperCase("fOo test THING", Locale.ENGLISH) );
assertEquals("upperCase(empty-string, Locale) failed",
"", StringUtils.upperCase("", Locale.ENGLISH) );
assertEquals("lowerCase(String, Locale) failed",
"foo test thing", StringUtils.lowerCase("fOo test THING", Locale.ENGLISH) );
assertEquals("lowerCase(empty-string, Locale) failed",
"", StringUtils.lowerCase("", Locale.ENGLISH) );
}
@Test
public void testSwapCase_String() {
assertEquals(null, 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));
}
//-----------------------------------------------------------------------
@Test
public void testJoin_Objects() {
assertEquals("abc", StringUtils.join("a", "b", "c"));
assertEquals("a", StringUtils.join(null, "", "a"));
assertEquals(null, StringUtils.join((Object[])null));
}
@Test
public void testJoin_Objectarray() {
// assertEquals(null, StringUtils.join(null)); // generates warning
assertEquals(null, 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(new String[] {"a", "b", "c"}));
assertEquals("a", StringUtils.join(new String[] {null, "a", ""}));
assertEquals("foo", StringUtils.join(MIXED_ARRAY_LIST));
assertEquals("foo2", StringUtils.join(MIXED_TYPE_LIST));
}
@Test
public void testJoin_ArrayCharSeparator() {
assertEquals(null, 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));
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_ArrayOfChars() {
assertEquals(null, 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));
}
@Test
public void testJoin_ArrayOfBytes() {
assertEquals(null, 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));
}
@Test
public void testJoin_ArrayOfInts() {
assertEquals(null, 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));
}
@Test
public void testJoin_ArrayOfLongs() {
assertEquals(null, 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));
}
@Test
public void testJoin_ArrayOfFloats() {
assertEquals(null, 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));
}
@Test
public void testJoin_ArrayOfDoubles() {
assertEquals(null, 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));
}
@Test
public void testJoin_ArrayOfShorts() {
assertEquals(null, 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));
}
@Test
public void testJoin_ArrayString() {
assertEquals(null, 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(EMPTY_ARRAY_LIST, SEPARATOR));
assertEquals(TEXT_LIST, StringUtils.join(ARRAY_LIST, SEPARATOR));
assertEquals(",,foo", StringUtils.join(MIXED_ARRAY_LIST, SEPARATOR));
assertEquals("foo,2", StringUtils.join(MIXED_TYPE_LIST, SEPARATOR));
assertEquals("/", StringUtils.join(MIXED_ARRAY_LIST, "/", 0, MIXED_ARRAY_LIST.length-1));
assertEquals("", StringUtils.join(MIXED_ARRAY_LIST, "", 0, MIXED_ARRAY_LIST.length-1));
assertEquals("foo", StringUtils.join(MIXED_TYPE_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_IteratorChar() {
assertEquals(null, 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'));
}
@Test
public void testJoin_IteratorString() {
assertEquals(null, 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));
}
@Test
public void testJoin_IterableChar() {
assertEquals(null, 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() {
assertEquals(null, 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 testSplit_String() {
assertArrayEquals(null, 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() {
assertArrayEquals(null, 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() {
assertArrayEquals(null, StringUtils.split(null, "."));
assertArrayEquals(null, 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]);
}
}
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(msg, 3, res.length);
assertEquals(msg, "a", res[0]);
assertEquals(msg, "b", res[1]);
assertEquals(msg, noMatch + "c", res[2]);
final String str2 = separator + "a" + separator;
res = StringUtils.split(str2, sepStr);
assertEquals(msg, 1, res.length);
assertEquals(msg, "a", res[0]);
res = StringUtils.split(str, sepStr, -1);
assertEquals(msg, 3, res.length);
assertEquals(msg, "a", res[0]);
assertEquals(msg, "b", res[1]);
assertEquals(msg, noMatch + "c", res[2]);
res = StringUtils.split(str, sepStr, 0);
assertEquals(msg, 3, res.length);
assertEquals(msg, "a", res[0]);
assertEquals(msg, "b", res[1]);
assertEquals(msg, noMatch + "c", res[2]);
res = StringUtils.split(str, sepStr, 1);
assertEquals(msg, 1, res.length);
assertEquals(msg, str, res[0]);
res = StringUtils.split(str, sepStr, 2);
assertEquals(msg, 2, res.length);
assertEquals(msg, "a", res[0]);
assertEquals(msg, str.substring(2), res[1]);
}
@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 testSplitByWholeSeparatorPreserveAllTokens_StringStringInt() {
assertArrayEquals( null, StringUtils.splitByWholeSeparatorPreserveAllTokens( null, ".", -1 ) ) ;
assertEquals( 0, StringUtils.splitByWholeSeparatorPreserveAllTokens( "", ".", -1 ).length ) ;
// test whitespace
String input = "ab de fg" ;
String[] expected = new String[] { "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 testSplitPreserveAllTokens_String() {
assertArrayEquals(null, 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() {
assertArrayEquals(null, 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[3]);
// Match example in javadoc
{
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() {
assertArrayEquals(null, StringUtils.splitPreserveAllTokens(null, "."));
assertArrayEquals(null, 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));
}
}
{
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]);
}
}
{
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]);
}
}
{
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]);
}
}
{
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]);
}
}
{
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"};
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]);
}
}
{
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]);
}
}
{
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]);
}
}
{
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]);
}
}
{
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]);
}
}
{
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]);
}
}
}
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(msg, 4, res.length);
assertEquals(msg, "a", res[0]);
assertEquals(msg, "b", res[1]);
assertEquals(msg, "", res[2]);
assertEquals(msg, noMatch + "c", res[3]);
final String str2 = separator + "a" + separator;
res = StringUtils.splitPreserveAllTokens(str2, sepStr);
assertEquals(msg, 3, res.length);
assertEquals(msg, "", res[0]);
assertEquals(msg, "a", res[1]);
assertEquals(msg, "", res[2]);
res = StringUtils.splitPreserveAllTokens(str, sepStr, -1);
assertEquals(msg, 4, res.length);
assertEquals(msg, "a", res[0]);
assertEquals(msg, "b", res[1]);
assertEquals(msg, "", res[2]);
assertEquals(msg, noMatch + "c", res[3]);
res = StringUtils.splitPreserveAllTokens(str, sepStr, 0);
assertEquals(msg, 4, res.length);
assertEquals(msg, "a", res[0]);
assertEquals(msg, "b", res[1]);
assertEquals(msg, "", res[2]);
assertEquals(msg, noMatch + "c", res[3]);
res = StringUtils.splitPreserveAllTokens(str, sepStr, 1);
assertEquals(msg, 1, res.length);
assertEquals(msg, str, res[0]);
res = StringUtils.splitPreserveAllTokens(str, sepStr, 2);
assertEquals(msg, 2, res.length);
assertEquals(msg, "a", res[0]);
assertEquals(msg, str.substring(2), res[1]);
}
@Test
public void testSplitByCharacterType() {
assertNull(StringUtils.splitByCharacterType(null));
assertEquals(0, StringUtils.splitByCharacterType("").length);
assertTrue(ArrayUtils.isEquals(new String[] { "ab", " ", "de", " ",
"fg" }, StringUtils.splitByCharacterType("ab de fg")));
assertTrue(ArrayUtils.isEquals(new String[] { "ab", " ", "de", " ",
"fg" }, StringUtils.splitByCharacterType("ab de fg")));
assertTrue(ArrayUtils.isEquals(new String[] { "ab", ":", "cd", ":",
"ef" }, StringUtils.splitByCharacterType("ab:cd:ef")));
assertTrue(ArrayUtils.isEquals(new String[] { "number", "5" },
StringUtils.splitByCharacterType("number5")));
assertTrue(ArrayUtils.isEquals(new String[] { "foo", "B", "ar" },
StringUtils.splitByCharacterType("fooBar")));
assertTrue(ArrayUtils.isEquals(new String[] { "foo", "200", "B", "ar" },
StringUtils.splitByCharacterType("foo200Bar")));
assertTrue(ArrayUtils.isEquals(new String[] { "ASFR", "ules" },
StringUtils.splitByCharacterType("ASFRules")));
}
@Test
public void testSplitByCharacterTypeCamelCase() {
assertNull(StringUtils.splitByCharacterTypeCamelCase(null));
assertEquals(0, StringUtils.splitByCharacterTypeCamelCase("").length);
assertTrue(ArrayUtils.isEquals(new String[] { "ab", " ", "de", " ",
"fg" }, StringUtils.splitByCharacterTypeCamelCase("ab de fg")));
assertTrue(ArrayUtils.isEquals(new String[] { "ab", " ", "de", " ",
"fg" }, StringUtils.splitByCharacterTypeCamelCase("ab de fg")));
assertTrue(ArrayUtils.isEquals(new String[] { "ab", ":", "cd", ":",
"ef" }, StringUtils.splitByCharacterTypeCamelCase("ab:cd:ef")));
assertTrue(ArrayUtils.isEquals(new String[] { "number", "5" },
StringUtils.splitByCharacterTypeCamelCase("number5")));
assertTrue(ArrayUtils.isEquals(new String[] { "foo", "Bar" },
StringUtils.splitByCharacterTypeCamelCase("fooBar")));
assertTrue(ArrayUtils.isEquals(new String[] { "foo", "200", "Bar" },
StringUtils.splitByCharacterTypeCamelCase("foo200Bar")));
assertTrue(ArrayUtils.isEquals(new String[] { "ASF", "Rules" },
StringUtils.splitByCharacterTypeCamelCase("ASFRules")));
}
@Test
public void testDeleteWhitespace_String() {
assertEquals(null, 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 testLang623() {
assertEquals("t", StringUtils.replaceChars("\u00DE", '\u00DE', 't'));
assertEquals("t", StringUtils.replaceChars("\u00FE", '\u00FE', 't'));
}
@Test
public void testReplace_StringStringString() {
assertEquals(null, StringUtils.replace(null, null, null));
assertEquals(null, StringUtils.replace(null, null, "any"));
assertEquals(null, StringUtils.replace(null, "any", null));
assertEquals(null, 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 testReplacePattern() {
assertEquals("X", StringUtils.replacePattern("<A>\nxy\n</A>", "<A>.*</A>", "X"));
}
@Test
public void testRemovePattern() {
assertEquals("", StringUtils.removePattern("<A>x\\ny</A>", "<A>.*</A>"));
}
@Test
public void testReplace_StringStringStringInt() {
assertEquals(null, StringUtils.replace(null, null, null, 2));
assertEquals(null, StringUtils.replace(null, null, "any", 2));
assertEquals(null, StringUtils.replace(null, "any", null, 2));
assertEquals(null, 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 testReplaceOnce_StringStringString() {
assertEquals(null, StringUtils.replaceOnce(null, null, null));
assertEquals(null, StringUtils.replaceOnce(null, null, "any"));
assertEquals(null, StringUtils.replaceOnce(null, "any", null));
assertEquals(null, 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 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");
}
/**
* 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(StringUtils.replaceEachRepeatedly("aba", null, null),"aba");
assertEquals(StringUtils.replaceEachRepeatedly("aba", new String[0], null),"aba");
assertEquals(StringUtils.replaceEachRepeatedly("aba", null, new String[0]),"aba");
assertEquals(StringUtils.replaceEachRepeatedly("aba", new String[0], null),"aba");
assertEquals(StringUtils.replaceEachRepeatedly("aba", new String[]{"a"}, new String[]{""}),"b");
assertEquals(StringUtils.replaceEachRepeatedly("aba", new String[]{null}, new String[]{"a"}),"aba");
assertEquals(StringUtils.replaceEachRepeatedly("abcde", new String[]{"ab", "d"}, new String[]{"w", "t"}),"wcte");
assertEquals(StringUtils.replaceEachRepeatedly("abcde", new String[]{"ab", "d"}, new String[]{"d", "t"}),"tcte");
try {
StringUtils.replaceEachRepeatedly("abcde", new String[]{"ab", "d"}, new String[]{"d", "ab"});
fail("Should be a circular reference");
} catch (final IllegalStateException e) {}
//JAVADOC TESTS END
}
@Test
public void testReplaceChars_StringCharChar() {
assertEquals(null, 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() {
assertEquals(null, StringUtils.replaceChars(null, null, null));
assertEquals(null, StringUtils.replaceChars(null, "", null));
assertEquals(null, StringUtils.replaceChars(null, "a", null));
assertEquals(null, StringUtils.replaceChars(null, null, ""));
assertEquals(null, 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 http://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 testOverlay_StringStringIntInt() {
assertEquals(null, StringUtils.overlay(null, null, 2, 4));
assertEquals(null, 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));
}
@Test
public void testRepeat_StringInt() {
assertEquals(null, StringUtils.repeat(null, 2));
assertEquals("", StringUtils.repeat("ab", 0));
assertEquals("", StringUtils.repeat("", 3));
assertEquals("aaa", StringUtils.repeat("a", 3));
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, new char[] {'a'}));
}
@Test
public void testRepeat_StringStringInt() {
assertEquals(null, StringUtils.repeat(null, null, 2));
assertEquals(null, 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
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("chop(String) failed",
expectedResult, StringUtils.chop(original));
}
}
@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("chomp(String) failed",
expectedResult, StringUtils.chomp(original));
}
assertEquals("chomp(String, String) failed",
"foo", StringUtils.chomp("foobar", "bar"));
assertEquals("chomp(String, String) failed",
"foobar", StringUtils.chomp("foobar", "baz"));
assertEquals("chomp(String, String) failed",
"foo", StringUtils.chomp("foo", "foooo"));
assertEquals("chomp(String, String) failed",
"foobar", StringUtils.chomp("foobar", ""));
assertEquals("chomp(String, String) failed",
"foobar", StringUtils.chomp("foobar", null));
assertEquals("chomp(String, String) failed",
"", StringUtils.chomp("", "foo"));
assertEquals("chomp(String, String) failed",
"", StringUtils.chomp("", null));
assertEquals("chomp(String, String) failed",
"", StringUtils.chomp("", ""));
assertEquals("chomp(String, String) failed",
null, StringUtils.chomp(null, "foo"));
assertEquals("chomp(String, String) failed",
null, StringUtils.chomp(null, null));
assertEquals("chomp(String, String) failed",
null, StringUtils.chomp(null, ""));
assertEquals("chomp(String, String) failed",
"", StringUtils.chomp("foo", "foo"));
assertEquals("chomp(String, String) failed",
" ", StringUtils.chomp(" foo", "foo"));
assertEquals("chomp(String, String) failed",
"foo ", StringUtils.chomp("foo ", "foo"));
}
//-----------------------------------------------------------------------
@Test
public void testRightPad_StringInt() {
assertEquals(null, 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() {
assertEquals(null, 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, new char[] {'a'}));
}
@Test
public void testRightPad_StringIntString() {
assertEquals(null, StringUtils.rightPad(null, 5, "-+"));
assertEquals(" ", StringUtils.rightPad("", 5, " "));
assertEquals(null, 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 testLeftPad_StringInt() {
assertEquals(null, 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() {
assertEquals(null, 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, new char[] {'a'}));
}
@Test
public void testLeftPad_StringIntString() {
assertEquals(null, StringUtils.leftPad(null, 5, "-+"));
assertEquals(null, 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 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 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 testCenter_StringInt() {
assertEquals(null, StringUtils.center(null, -1));
assertEquals(null, 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() {
assertEquals(null, StringUtils.center(null, -1, ' '));
assertEquals(null, 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() {
assertEquals(null, StringUtils.center(null, 4, null));
assertEquals(null, StringUtils.center(null, -1, " "));
assertEquals(null, 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 testReverse_String() {
assertEquals(null, StringUtils.reverse(null) );
assertEquals("", StringUtils.reverse("") );
assertEquals("sdrawkcab", StringUtils.reverse("backwards") );
}
@Test
public void testReverseDelimited_StringChar() {
assertEquals(null, 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 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 testDefaultIfEmpty_StringString() {
assertEquals("NULL", StringUtils.defaultIfEmpty(null, "NULL"));
assertEquals("NULL", StringUtils.defaultIfEmpty("", "NULL"));
assertEquals("abc", StringUtils.defaultIfEmpty("abc", "NULL"));
assertNull(StringUtils.defaultIfEmpty("", null));
// Tests compatibility for the API return type
final String s = StringUtils.defaultIfEmpty("abc", "NULL");
assertEquals("abc", s);
}
@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("", null));
// Tests compatibility for the API return type
final String s = StringUtils.defaultIfBlank("abc", "NULL");
assertEquals("abc", s);
}
@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(""), 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 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(""), 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 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(""), 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 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(""), 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 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(""), 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 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(""), 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 testAbbreviate_StringInt() {
assertEquals(null, 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));
try {
@SuppressWarnings("unused")
final
String res = StringUtils.abbreviate("abc", 3);
fail("StringUtils.abbreviate expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// empty
}
}
@Test
public void testAbbreviate_StringIntInt() {
assertEquals(null, StringUtils.abbreviate(null, 10, 12));
assertEquals("", StringUtils.abbreviate("", 0, 10));
assertEquals("", StringUtils.abbreviate("", 2, 10));
try {
@SuppressWarnings("unused")
final
String res = StringUtils.abbreviate("abcdefghij", 0, 3);
fail("StringUtils.abbreviate expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// empty
}
try {
@SuppressWarnings("unused")
final
String res = StringUtils.abbreviate("abcdefghij", 5, 6);
fail("StringUtils.abbreviate expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// empty
}
final String raspberry = "raspberry peach";
assertEquals("raspberry peach", StringUtils.abbreviate(raspberry, 11, 15));
assertEquals(null, 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", 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);
}
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(message + " -- should contain offset character",
actual.indexOf((char)('a'+offset)) != -1);
}
assertTrue(message + " -- should not be greater than maxWidth",
actual.length() <= maxWidth);
assertEquals(message, expected, actual);
}
@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));
}
//-----------------------------------------------------------------------
@Test
public void testDifference_StringString() {
assertEquals(null, 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_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"));
//System.out.println("indexOfDiff: " + StringUtils.indexOfDifference("i am a robot", "not machine"));
}
//-----------------------------------------------------------------------
@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") );
try {
@SuppressWarnings("unused")
final
int d = StringUtils.getLevenshteinDistance("a", null);
fail("expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// empty
}
try {
@SuppressWarnings("unused")
final
int d = StringUtils.getLevenshteinDistance(null, "a");
fail("expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// empty
}
}
@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) );
// exceptions
try {
@SuppressWarnings("unused")
final
int d = StringUtils.getLevenshteinDistance("a", null, 0);
fail("expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// empty
}
try {
@SuppressWarnings("unused")
final
int d = StringUtils.getLevenshteinDistance(null, "a", 0);
fail("expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// empty
}
try {
@SuppressWarnings("unused")
final
int d = StringUtils.getLevenshteinDistance("a", "a", -1);
fail("expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// empty
}
}
/**
* A sanity check for {@link StringUtils#EMPTY}.
*/
@Test
public void testEMPTY() {
assertNotNull(StringUtils.EMPTY);
assertEquals("", StringUtils.EMPTY);
assertEquals(0, StringUtils.EMPTY.length());
}
/**
* Test for {@link StringUtils#isAllLowerCase(CharSequence)}.
*/
@Test
public void testIsAllLowerCase() {
assertFalse(StringUtils.isAllLowerCase(null));
assertFalse(StringUtils.isAllLowerCase(StringUtils.EMPTY));
assertTrue(StringUtils.isAllLowerCase("abc"));
assertFalse(StringUtils.isAllLowerCase("abc "));
assertFalse(StringUtils.isAllLowerCase("abC"));
}
/**
* Test for {@link StringUtils#isAllUpperCase(CharSequence)}.
*/
@Test
public void testIsAllUpperCase() {
assertFalse(StringUtils.isAllUpperCase(null));
assertFalse(StringUtils.isAllUpperCase(StringUtils.EMPTY));
assertTrue(StringUtils.isAllUpperCase("ABC"));
assertFalse(StringUtils.isAllUpperCase("ABC "));
assertFalse(StringUtils.isAllUpperCase("aBC"));
}
@Test
public void testRemoveStart() {
// 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("removeStartIgnoreCase(null, null)", StringUtils.removeStartIgnoreCase(null, null));
assertNull("removeStartIgnoreCase(null, \"\")", StringUtils.removeStartIgnoreCase(null, ""));
assertNull("removeStartIgnoreCase(null, \"a\")", StringUtils.removeStartIgnoreCase(null, "a"));
// StringUtils.removeStart(*, null) = *
assertEquals("removeStartIgnoreCase(\"\", null)", StringUtils.removeStartIgnoreCase("", null), "");
assertEquals("removeStartIgnoreCase(\"\", \"\")", StringUtils.removeStartIgnoreCase("", ""), "");
assertEquals("removeStartIgnoreCase(\"\", \"a\")", StringUtils.removeStartIgnoreCase("", "a"), "");
// All others:
assertEquals("removeStartIgnoreCase(\"www.domain.com\", \"www.\")", StringUtils.removeStartIgnoreCase("www.domain.com", "www."), "domain.com");
assertEquals("removeStartIgnoreCase(\"domain.com\", \"www.\")", StringUtils.removeStartIgnoreCase("domain.com", "www."), "domain.com");
assertEquals("removeStartIgnoreCase(\"domain.com\", \"\")", StringUtils.removeStartIgnoreCase("domain.com", ""), "domain.com");
assertEquals("removeStartIgnoreCase(\"domain.com\", null)", StringUtils.removeStartIgnoreCase("domain.com", null), "domain.com");
// Case insensitive:
assertEquals("removeStartIgnoreCase(\"www.domain.com\", \"WWW.\")", StringUtils.removeStartIgnoreCase("www.domain.com", "WWW."), "domain.com");
}
@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("removeEndIgnoreCase(null, null)", StringUtils.removeEndIgnoreCase(null, null));
assertNull("removeEndIgnoreCase(null, \"\")", StringUtils.removeEndIgnoreCase(null, ""));
assertNull("removeEndIgnoreCase(null, \"a\")", StringUtils.removeEndIgnoreCase(null, "a"));
// StringUtils.removeEnd(*, null) = *
assertEquals("removeEndIgnoreCase(\"\", null)", StringUtils.removeEndIgnoreCase("", null), "");
assertEquals("removeEndIgnoreCase(\"\", \"\")", StringUtils.removeEndIgnoreCase("", ""), "");
assertEquals("removeEndIgnoreCase(\"\", \"a\")", StringUtils.removeEndIgnoreCase("", "a"), "");
// All others:
assertEquals("removeEndIgnoreCase(\"www.domain.com.\", \".com\")", StringUtils.removeEndIgnoreCase("www.domain.com.", ".com"), "www.domain.com.");
assertEquals("removeEndIgnoreCase(\"www.domain.com\", \".com\")", StringUtils.removeEndIgnoreCase("www.domain.com", ".com"), "www.domain");
assertEquals("removeEndIgnoreCase(\"www.domain\", \".com\")", StringUtils.removeEndIgnoreCase("www.domain", ".com"), "www.domain");
assertEquals("removeEndIgnoreCase(\"domain.com\", \"\")", StringUtils.removeEndIgnoreCase("domain.com", ""), "domain.com");
assertEquals("removeEndIgnoreCase(\"domain.com\", null)", StringUtils.removeEndIgnoreCase("domain.com", null), "domain.com");
// Case insensitive:
assertEquals("removeEndIgnoreCase(\"www.domain.com\", \".COM\")", StringUtils.removeEndIgnoreCase("www.domain.com", ".COM"), "www.domain");
assertEquals("removeEndIgnoreCase(\"www.domain.COM\", \".com\")", StringUtils.removeEndIgnoreCase("www.domain.COM", ".com"), "www.domain");
}
@Test
public void testRemove_String() {
// StringUtils.remove(null, *) = null
assertEquals(null, StringUtils.remove(null, null));
assertEquals(null, StringUtils.remove(null, ""));
assertEquals(null, StringUtils.remove(null, "a"));
// StringUtils.remove("", *) = ""
assertEquals("", StringUtils.remove("", null));
assertEquals("", StringUtils.remove("", ""));
assertEquals("", StringUtils.remove("", "a"));
// StringUtils.remove(*, null) = *
assertEquals(null, StringUtils.remove(null, null));
assertEquals("", StringUtils.remove("", null));
assertEquals("a", StringUtils.remove("a", null));
// StringUtils.remove(*, "") = *
assertEquals(null, 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 testRemove_char() {
// StringUtils.remove(null, *) = null
assertEquals(null, StringUtils.remove(null, 'a'));
assertEquals(null, StringUtils.remove(null, 'a'));
assertEquals(null, StringUtils.remove(null, 'a'));
// StringUtils.remove("", *) = ""
assertEquals("", StringUtils.remove("", 'a'));
assertEquals("", StringUtils.remove("", 'a'));
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 testDifferenceAt_StringArray() {
assertEquals(-1, StringUtils.indexOfDifference((String[])null));
assertEquals(-1, StringUtils.indexOfDifference(new String[] {}));
assertEquals(-1, StringUtils.indexOfDifference(new String[] {"abc"}));
assertEquals(-1, StringUtils.indexOfDifference(new String[] {null, null}));
assertEquals(-1, StringUtils.indexOfDifference(new String[] {"", ""}));
assertEquals(0, StringUtils.indexOfDifference(new String[] {"", null}));
assertEquals(0, StringUtils.indexOfDifference(new String[] {"abc", null, null}));
assertEquals(0, StringUtils.indexOfDifference(new String[] {null, null, "abc"}));
assertEquals(0, StringUtils.indexOfDifference(new String[] {"", "abc"}));
assertEquals(0, StringUtils.indexOfDifference(new String[] {"abc", ""}));
assertEquals(-1, StringUtils.indexOfDifference(new String[] {"abc", "abc"}));
assertEquals(1, StringUtils.indexOfDifference(new String[] {"abc", "a"}));
assertEquals(2, StringUtils.indexOfDifference(new String[] {"ab", "abxyz"}));
assertEquals(2, StringUtils.indexOfDifference(new String[] {"abcde", "abxyz"}));
assertEquals(0, StringUtils.indexOfDifference(new String[] {"abcde", "xyz"}));
assertEquals(0, StringUtils.indexOfDifference(new String[] {"xyz", "abcde"}));
assertEquals(7, StringUtils.indexOfDifference(new String[] {"i am a machine", "i am a robot"}));
}
@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 testNormalizeSpace() {
assertEquals(null, 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"));
}
@Test
public void testLANG666() {
assertEquals("12",StringUtils.stripEnd("120.00", ".0"));
assertEquals("121",StringUtils.stripEnd("121.00", ".0"));
}
// 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;
final Method[] methods = c.getMethods();
for (final Method m : methods) {
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)) {
fail("The method " + m + " 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)) {
fail("The method " + m + " appears to be immutable in spirit and therefore must not accept a String");
}
}
}
}
/**
* Tests {@link StringUtils#toString(byte[], String)}
*
* @throws UnsupportedEncodingException
* @see StringUtils#toString(byte[], String)
*/
@Test
public void testToString() throws UnsupportedEncodingException {
final String expectedString = "The quick brown fox jumped over the lazy dog.";
String encoding = SystemUtils.FILE_ENCODING;
byte[] expectedBytes = expectedString.getBytes(encoding);
// sanity check start
assertArrayEquals(expectedBytes, expectedString.getBytes());
// sanity check end
assertEquals(expectedString, StringUtils.toString(expectedBytes, null));
assertEquals(expectedString, StringUtils.toString(expectedBytes, encoding));
encoding = "UTF-16";
expectedBytes = expectedString.getBytes(encoding);
assertEquals(expectedString, StringUtils.toString(expectedBytes, encoding));
}
@Test
public void testEscapeSurrogatePairs() throws Exception {
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.
*
* @throws Exception
*/
@Test
public void testEscapeSurrogatePairsLang858() throws Exception {
assertEquals("\\uDBFF\\uDFFD", StringEscapeUtils.escapeJava("\uDBFF\uDFFD")); //fail LANG-858
assertEquals("\\uDBFF\\uDFFD", StringEscapeUtils.escapeEcmaScript("\uDBFF\uDFFD")); //fail LANG-858
}
@Test
public void testUnescapeSurrogatePairs() throws Exception {
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"));
}
/**
* Tests {@code appendIfMissing}.
*/
@Test
public void testAppendIfMissing() {
assertEquals("appendIfMissing(null,null)", null, StringUtils.appendIfMissing(null,null));
assertEquals("appendIfMissing(abc,null)", "abc", StringUtils.appendIfMissing("abc",null));
assertEquals("appendIfMissing(\"\",xyz)", "xyz", StringUtils.appendIfMissing("","xyz"));
assertEquals("appendIfMissing(abc,xyz)", "abcxyz", StringUtils.appendIfMissing("abc","xyz"));
assertEquals("appendIfMissing(abcxyz,xyz)", "abcxyz", StringUtils.appendIfMissing("abcxyz","xyz"));
assertEquals("appendIfMissing(aXYZ,xyz)", "aXYZxyz", StringUtils.appendIfMissing("aXYZ","xyz"));
assertEquals("appendIfMissing(null,null,null)", null, StringUtils.appendIfMissing(null,null,(CharSequence[]) null));
assertEquals("appendIfMissing(abc,null,null)", "abc", StringUtils.appendIfMissing("abc",null,(CharSequence[]) null));
assertEquals("appendIfMissing(\"\",xyz,null))", "xyz", StringUtils.appendIfMissing("","xyz",(CharSequence[]) null));
assertEquals("appendIfMissing(abc,xyz,{null})", "abcxyz", StringUtils.appendIfMissing("abc","xyz",new CharSequence[]{null}));
assertEquals("appendIfMissing(abc,xyz,\"\")", "abc", StringUtils.appendIfMissing("abc","xyz",""));
assertEquals("appendIfMissing(abc,xyz,mno)", "abcxyz", StringUtils.appendIfMissing("abc","xyz","mno"));
assertEquals("appendIfMissing(abcxyz,xyz,mno)", "abcxyz", StringUtils.appendIfMissing("abcxyz","xyz","mno"));
assertEquals("appendIfMissing(abcmno,xyz,mno)", "abcmno", StringUtils.appendIfMissing("abcmno","xyz","mno"));
assertEquals("appendIfMissing(abcXYZ,xyz,mno)", "abcXYZxyz", StringUtils.appendIfMissing("abcXYZ","xyz","mno"));
assertEquals("appendIfMissing(abcMNO,xyz,mno)", "abcMNOxyz", StringUtils.appendIfMissing("abcMNO","xyz","mno"));
}
/**
* Tests {@code appendIfMissingIgnoreCase}.
*/
@Test
public void testAppendIfMissingIgnoreCase() {
assertEquals("appendIfMissingIgnoreCase(null,null)", null, StringUtils.appendIfMissingIgnoreCase(null,null));
assertEquals("appendIfMissingIgnoreCase(abc,null)", "abc", StringUtils.appendIfMissingIgnoreCase("abc",null));
assertEquals("appendIfMissingIgnoreCase(\"\",xyz)", "xyz", StringUtils.appendIfMissingIgnoreCase("","xyz"));
assertEquals("appendIfMissingIgnoreCase(abc,xyz)", "abcxyz", StringUtils.appendIfMissingIgnoreCase("abc","xyz"));
assertEquals("appendIfMissingIgnoreCase(abcxyz,xyz)", "abcxyz", StringUtils.appendIfMissingIgnoreCase("abcxyz","xyz"));
assertEquals("appendIfMissingIgnoreCase(abcXYZ,xyz)", "abcXYZ", StringUtils.appendIfMissingIgnoreCase("abcXYZ","xyz"));
assertEquals("appendIfMissingIgnoreCase(null,null,null)", null, StringUtils.appendIfMissingIgnoreCase(null,null,(CharSequence[]) null));
assertEquals("appendIfMissingIgnoreCase(abc,null,null)", "abc", StringUtils.appendIfMissingIgnoreCase("abc",null,(CharSequence[]) null));
assertEquals("appendIfMissingIgnoreCase(\"\",xyz,null)", "xyz", StringUtils.appendIfMissingIgnoreCase("","xyz",(CharSequence[]) null));
assertEquals("appendIfMissingIgnoreCase(abc,xyz,{null})", "abcxyz", StringUtils.appendIfMissingIgnoreCase("abc","xyz",new CharSequence[]{null}));
assertEquals("appendIfMissingIgnoreCase(abc,xyz,\"\")", "abc", StringUtils.appendIfMissingIgnoreCase("abc","xyz",""));
assertEquals("appendIfMissingIgnoreCase(abc,xyz,mno)", "abcxyz", StringUtils.appendIfMissingIgnoreCase("abc","xyz","mno"));
assertEquals("appendIfMissingIgnoreCase(abcxyz,xyz,mno)", "abcxyz", StringUtils.appendIfMissingIgnoreCase("abcxyz","xyz","mno"));
assertEquals("appendIfMissingIgnoreCase(abcmno,xyz,mno)", "abcmno", StringUtils.appendIfMissingIgnoreCase("abcmno","xyz","mno"));
assertEquals("appendIfMissingIgnoreCase(abcXYZ,xyz,mno)", "abcXYZ", StringUtils.appendIfMissingIgnoreCase("abcXYZ","xyz","mno"));
assertEquals("appendIfMissingIgnoreCase(abcMNO,xyz,mno)", "abcMNO", StringUtils.appendIfMissingIgnoreCase("abcMNO","xyz","mno"));
}
/**
* Tests {@code prependIfMissing}.
*/
@Test
public void testPrependIfMissing() {
assertEquals("prependIfMissing(null,null)", null, StringUtils.prependIfMissing(null,null));
assertEquals("prependIfMissing(abc,null)", "abc", StringUtils.prependIfMissing("abc",null));
assertEquals("prependIfMissing(\"\",xyz)", "xyz", StringUtils.prependIfMissing("","xyz"));
assertEquals("prependIfMissing(abc,xyz)", "xyzabc", StringUtils.prependIfMissing("abc","xyz"));
assertEquals("prependIfMissing(xyzabc,xyz)", "xyzabc", StringUtils.prependIfMissing("xyzabc","xyz"));
assertEquals("prependIfMissing(XYZabc,xyz)", "xyzXYZabc", StringUtils.prependIfMissing("XYZabc","xyz"));
assertEquals("prependIfMissing(null,null null)", null, StringUtils.prependIfMissing(null,null,(CharSequence[]) null));
assertEquals("prependIfMissing(abc,null,null)", "abc", StringUtils.prependIfMissing("abc",null,(CharSequence[]) null));
assertEquals("prependIfMissing(\"\",xyz,null)", "xyz", StringUtils.prependIfMissing("","xyz",(CharSequence[]) null));
assertEquals("prependIfMissing(abc,xyz,{null})","xyzabc", StringUtils.prependIfMissing("abc","xyz",new CharSequence[]{null}));
assertEquals("prependIfMissing(abc,xyz,\"\")","abc", StringUtils.prependIfMissing("abc","xyz",""));
assertEquals("prependIfMissing(abc,xyz,mno)","xyzabc", StringUtils.prependIfMissing("abc","xyz","mno"));
assertEquals("prependIfMissing(xyzabc,xyz,mno)", "xyzabc", StringUtils.prependIfMissing("xyzabc","xyz","mno"));
assertEquals("prependIfMissing(mnoabc,xyz,mno)", "mnoabc", StringUtils.prependIfMissing("mnoabc","xyz","mno"));
assertEquals("prependIfMissing(XYZabc,xyz,mno)", "xyzXYZabc", StringUtils.prependIfMissing("XYZabc","xyz","mno"));
assertEquals("prependIfMissing(MNOabc,xyz,mno)", "xyzMNOabc", StringUtils.prependIfMissing("MNOabc","xyz","mno"));
}
/**
* Tests {@code prependIfMissingIgnoreCase}.
*/
@Test
public void testPrependIfMissingIgnoreCase() {
assertEquals("prependIfMissingIgnoreCase(null,null)", null, StringUtils.prependIfMissingIgnoreCase(null,null));
assertEquals("prependIfMissingIgnoreCase(abc,null)", "abc", StringUtils.prependIfMissingIgnoreCase("abc",null));
assertEquals("prependIfMissingIgnoreCase(\"\",xyz)", "xyz", StringUtils.prependIfMissingIgnoreCase("","xyz"));
assertEquals("prependIfMissingIgnoreCase(abc,xyz)", "xyzabc", StringUtils.prependIfMissingIgnoreCase("abc","xyz"));
assertEquals("prependIfMissingIgnoreCase(xyzabc,xyz)", "xyzabc", StringUtils.prependIfMissingIgnoreCase("xyzabc","xyz"));
assertEquals("prependIfMissingIgnoreCase(XYZabc,xyz)", "XYZabc", StringUtils.prependIfMissingIgnoreCase("XYZabc","xyz"));
assertEquals("prependIfMissingIgnoreCase(null,null null)", null, StringUtils.prependIfMissingIgnoreCase(null,null,(CharSequence[]) null));
assertEquals("prependIfMissingIgnoreCase(abc,null,null)", "abc", StringUtils.prependIfMissingIgnoreCase("abc",null,(CharSequence[]) null));
assertEquals("prependIfMissingIgnoreCase(\"\",xyz,null)", "xyz", StringUtils.prependIfMissingIgnoreCase("","xyz",(CharSequence[]) null));
assertEquals("prependIfMissingIgnoreCase(abc,xyz,{null})","xyzabc", StringUtils.prependIfMissingIgnoreCase("abc","xyz",new CharSequence[]{null}));
assertEquals("prependIfMissingIgnoreCase(abc,xyz,\"\")","abc", StringUtils.prependIfMissingIgnoreCase("abc","xyz",""));
assertEquals("prependIfMissingIgnoreCase(abc,xyz,mno)","xyzabc", StringUtils.prependIfMissingIgnoreCase("abc","xyz","mno"));
assertEquals("prependIfMissingIgnoreCase(xyzabc,xyz,mno)", "xyzabc", StringUtils.prependIfMissingIgnoreCase("xyzabc","xyz","mno"));
assertEquals("prependIfMissingIgnoreCase(mnoabc,xyz,mno)", "mnoabc", StringUtils.prependIfMissingIgnoreCase("mnoabc","xyz","mno"));
assertEquals("prependIfMissingIgnoreCase(XYZabc,xyz,mno)", "XYZabc", StringUtils.prependIfMissingIgnoreCase("XYZabc","xyz","mno"));
assertEquals("prependIfMissingIgnoreCase(MNOabc,xyz,mno)", "MNOabc", StringUtils.prependIfMissingIgnoreCase("MNOabc","xyz","mno"));
}
/**
* Tests {@link StringUtils#toString(byte[], Charset)}
*
* @throws UnsupportedEncodingException
* @see StringUtils#toString(byte[], Charset)
*/
@Test
public void testToEncodedString() throws UnsupportedEncodingException {
final String expectedString = "The quick brown fox jumped over the lazy dog.";
String encoding = SystemUtils.FILE_ENCODING;
byte[] expectedBytes = expectedString.getBytes(encoding);
// 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(encoding);
assertEquals(expectedString, StringUtils.toEncodedString(expectedBytes, Charset.forName(encoding)));
}
}