/*
* 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.codec.binary;
import java.io.UnsupportedEncodingException;
import java.util.Arrays;
import junit.framework.Assert;
import junit.framework.TestCase;
/**
* Tests {@link StringUtils}
*
* @author <a href="mailto:ggregory@seagullsw.com">Gary Gregory</a>
* @version $Id: StringUtilsTest.java 886286 2009-12-02 19:39:11Z sebb $
*/
public class StringUtilsTest extends TestCase {
private static final byte[] BYTES_FIXTURE = {'a','b','c'};
private static final String STRING_FIXTURE = "ABC";
/**
* We could make the constructor private but there does not seem to be a point to jumping through extra code hoops
* to restrict instantiation right now.
*/
public void testConstructor() {
new StringUtils();
}
public void testGetBytesIso8859_1() throws UnsupportedEncodingException {
String charsetName = "ISO-8859-1";
testGetBytesUnchecked(charsetName);
byte[] expected = STRING_FIXTURE.getBytes(charsetName);
byte[] actual = StringUtils.getBytesIso8859_1(STRING_FIXTURE);
Assert.assertTrue(Arrays.equals(expected, actual));
}
private void testGetBytesUnchecked(String charsetName) throws UnsupportedEncodingException {
byte[] expected = STRING_FIXTURE.getBytes(charsetName);
byte[] actual = StringUtils.getBytesUnchecked(STRING_FIXTURE, charsetName);
Assert.assertTrue(Arrays.equals(expected, actual));
}
public void testGetBytesUsAscii() throws UnsupportedEncodingException {
String charsetName = "US-ASCII";
testGetBytesUnchecked(charsetName);
byte[] expected = STRING_FIXTURE.getBytes(charsetName);
byte[] actual = StringUtils.getBytesUsAscii(STRING_FIXTURE);
Assert.assertTrue(Arrays.equals(expected, actual));
}
public void testGetBytesUtf16() throws UnsupportedEncodingException {
String charsetName = "UTF-16";
testGetBytesUnchecked(charsetName);
byte[] expected = STRING_FIXTURE.getBytes(charsetName);
byte[] actual = StringUtils.getBytesUtf16(STRING_FIXTURE);
Assert.assertTrue(Arrays.equals(expected, actual));
}
public void testGetBytesUtf16Be() throws UnsupportedEncodingException {
String charsetName = "UTF-16BE";
testGetBytesUnchecked(charsetName);
byte[] expected = STRING_FIXTURE.getBytes(charsetName);
byte[] actual = StringUtils.getBytesUtf16Be(STRING_FIXTURE);
Assert.assertTrue(Arrays.equals(expected, actual));
}
public void testGetBytesUtf16Le() throws UnsupportedEncodingException {
String charsetName = "UTF-16LE";
testGetBytesUnchecked(charsetName);
byte[] expected = STRING_FIXTURE.getBytes(charsetName);
byte[] actual = StringUtils.getBytesUtf16Le(STRING_FIXTURE);
Assert.assertTrue(Arrays.equals(expected, actual));
}
public void testGetBytesUtf8() throws UnsupportedEncodingException {
String charsetName = "UTF-8";
testGetBytesUnchecked(charsetName);
byte[] expected = STRING_FIXTURE.getBytes(charsetName);
byte[] actual = StringUtils.getBytesUtf8(STRING_FIXTURE);
Assert.assertTrue(Arrays.equals(expected, actual));
}
public void testGetBytesUncheckedBadName() {
try {
StringUtils.getBytesUnchecked(STRING_FIXTURE, "UNKNOWN");
Assert.fail("Expected " + IllegalStateException.class.getName());
} catch (IllegalStateException e) {
// Expected
}
}
private void testNewString(String charsetName) throws UnsupportedEncodingException {
String expected = new String(BYTES_FIXTURE, charsetName);
String actual = StringUtils.newString(BYTES_FIXTURE, charsetName);
Assert.assertEquals(expected, actual);
}
public void testNewStringBadEnc() {
try {
StringUtils.newString(BYTES_FIXTURE, "UNKNOWN");
Assert.fail("Expected " + IllegalStateException.class.getName());
} catch (IllegalStateException e) {
// Expected
}
}
public void testNewStringIso8859_1() throws UnsupportedEncodingException {
String charsetName = "ISO-8859-1";
testNewString(charsetName);
String expected = new String(BYTES_FIXTURE, charsetName);
String actual = StringUtils.newStringIso8859_1(BYTES_FIXTURE);
Assert.assertEquals(expected, actual);
}
public void testNewStringUsAscii() throws UnsupportedEncodingException {
String charsetName = "US-ASCII";
testNewString(charsetName);
String expected = new String(BYTES_FIXTURE, charsetName);
String actual = StringUtils.newStringUsAscii(BYTES_FIXTURE);
Assert.assertEquals(expected, actual);
}
public void testNewStringUtf16() throws UnsupportedEncodingException {
String charsetName = "UTF-16";
testNewString(charsetName);
String expected = new String(BYTES_FIXTURE, charsetName);
String actual = StringUtils.newStringUtf16(BYTES_FIXTURE);
Assert.assertEquals(expected, actual);
}
public void testNewStringUtf16Be() throws UnsupportedEncodingException {
String charsetName = "UTF-16BE";
testNewString(charsetName);
String expected = new String(BYTES_FIXTURE, charsetName);
String actual = StringUtils.newStringUtf16Be(BYTES_FIXTURE);
Assert.assertEquals(expected, actual);
}
public void testNewStringUtf16Le() throws UnsupportedEncodingException {
String charsetName = "UTF-16LE";
testNewString(charsetName);
String expected = new String(BYTES_FIXTURE, charsetName);
String actual = StringUtils.newStringUtf16Le(BYTES_FIXTURE);
Assert.assertEquals(expected, actual);
}
public void testNewStringUtf8() throws UnsupportedEncodingException {
String charsetName = "UTF-8";
testNewString(charsetName);
String expected = new String(BYTES_FIXTURE, charsetName);
String actual = StringUtils.newStringUtf8(BYTES_FIXTURE);
Assert.assertEquals(expected, actual);
}
}