/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed 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 libcore.java.nio.charset;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import java.nio.charset.CoderResult;
public class CharsetDecoderTest extends junit.framework.TestCase {
// http://code.google.com/p/android/issues/detail?id=4237
public void test_ByteArray_decode_no_offset() throws Exception {
CharsetDecoder decoder = Charset.forName("UTF-16").newDecoder();
byte[] arr = encode("UTF-16", "Android");
ByteBuffer inBuffer = ByteBuffer.wrap(arr, 0, arr.length).slice();
CharBuffer outBuffer = CharBuffer.allocate(arr.length);
decoder.reset();
CoderResult coderResult = decoder.decode(inBuffer, outBuffer, true);
assertFalse(coderResult.toString(), coderResult.isError());
decoder.flush(outBuffer);
outBuffer.flip();
assertEquals("Android", outBuffer.toString().trim());
}
// http://code.google.com/p/android/issues/detail?id=4237
public void test_ByteArray_decode_with_offset() throws Exception {
CharsetDecoder decoder = Charset.forName("UTF-16").newDecoder();
byte[] arr = encode("UTF-16", "Android");
arr = prependByteToByteArray(arr, new Integer(1).byteValue());
int offset = 1;
ByteBuffer inBuffer = ByteBuffer.wrap(arr, offset, arr.length - offset).slice();
CharBuffer outBuffer = CharBuffer.allocate(arr.length - offset);
decoder.reset();
CoderResult coderResult = decoder.decode(inBuffer, outBuffer, true);
assertFalse(coderResult.toString(), coderResult.isError());
decoder.flush(outBuffer);
outBuffer.flip();
assertEquals("Android", outBuffer.toString().trim());
}
// http://code.google.com/p/android/issues/detail?id=4237
public void test_ByteArray_decode_with_offset_using_facade_method() throws Exception {
CharsetDecoder decoder = Charset.forName("UTF-16").newDecoder();
byte[] arr = encode("UTF-16", "Android");
arr = prependByteToByteArray(arr, new Integer(1).byteValue());
int offset = 1;
CharBuffer outBuffer = decoder.decode(ByteBuffer.wrap(arr, offset, arr.length - offset));
assertEquals("Android", outBuffer.toString().trim());
}
private static byte[] prependByteToByteArray(byte[] arr, byte b) {
byte[] result = new byte[arr.length + 1];
result[0] = b;
System.arraycopy(arr, 0, result, 1, arr.length);
return result;
}
private static byte[] encode(String charsetName, String s) throws Exception {
CharsetEncoder encoder = Charset.forName(charsetName).newEncoder();
return encoder.encode(CharBuffer.wrap(s)).array();
}
}