/*
* Copyright 2012 The Netty Project
*
* The Netty Project 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.jboss.netty.util.internal;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Unit test for {@link StringUtil}.
*/
public class StringUtilTest {
@Test
public void stripControlCharactersObjectNull() {
assertNull(StringUtil.stripControlCharacters(null));
}
@Test
public void stripControlCharactersNull() {
assertNull(StringUtil.stripControlCharacters(null));
}
@Test
public void stripControlCharactersRightTrim() {
final char controlCode = 0x0000;
final String object = "abbb" + controlCode;
assertEquals(5, object.length());
final String stripped = StringUtil.stripControlCharacters(object);
assertFalse(object.equals(stripped));
assertEquals(4, stripped.length());
}
@Test
public void stripControlCharactersLeftTrim() {
final char controlCode = 0x0000;
final String string = controlCode + "abbb";
assertEquals(5, string.length());
final String stripped = StringUtil.stripControlCharacters(string);
assertFalse(string.equals(stripped));
assertEquals(4, stripped.length());
}
@Test
public void stripControlCharacters() {
for (char i = 0x0000; i <= 0x001F; i ++) {
assertStripped(i);
}
for (char i = 0x007F; i <= 0x009F; i ++) {
assertStripped(i);
}
}
private static void assertStripped(final char controlCode) {
final Object object = "aaa" + controlCode + "bbb";
final String stripped = StringUtil.stripControlCharacters(object);
assertEquals("aaa bbb", stripped);
}
@Test
public void stripNonControlCharacter() {
final char controlCode = 0x002F;
final String string = controlCode + "abbb";
final String stripped = StringUtil.stripControlCharacters(string);
assertEquals("The string should be unchanged", string, stripped);
}
@Test
public void splitSimple() {
assertArrayEquals(new String[] { "foo", "bar" }, StringUtil.split("foo:bar", ':'));
}
@Test
public void splitWithTrailingDelimiter() {
assertArrayEquals(new String[] { "foo", "bar" }, StringUtil.split("foo,bar,", ','));
}
@Test
public void splitWithTrailingDelimiters() {
assertArrayEquals(new String[] { "foo", "bar" }, StringUtil.split("foo!bar!!", '!'));
}
@Test
public void splitWithConsecutiveDelimiters() {
assertArrayEquals(new String[] { "foo", "", "bar" }, StringUtil.split("foo$$bar", '$'));
}
@Test
public void splitWithDelimiterAtBeginning() {
assertArrayEquals(new String[] { "", "foo", "bar" }, StringUtil.split("#foo#bar", '#'));
}
}