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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.util;
import junit.framework.TestCase;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Arrays;
public class ByteBufferInputStreamTest extends TestCase
{
private byte[] _data = {2, 1, 5, 3, 4};
private ByteBufferInputStream _inputStream;
public void setUp() throws Exception
{
_inputStream = new ByteBufferInputStream(ByteBuffer.wrap(_data));
}
public void testRead() throws IOException
{
for (int i = 0; i < _data.length; i++)
{
assertEquals("Unexpected byte at position " + i, _data[i], _inputStream.read());
}
assertEquals("EOF not reached", -1, _inputStream.read());
}
public void testReadByteArray() throws IOException
{
byte[] readBytes = new byte[_data.length];
int length = _inputStream.read(readBytes, 0, 2);
byte[] expected = new byte[_data.length];
System.arraycopy(_data, 0, expected, 0, 2);
assertTrue("Unexpected data", Arrays.equals(expected, readBytes));
assertEquals("Unexpected length", 2, length);
length = _inputStream.read(readBytes, 2, 3);
assertTrue("Unexpected data", Arrays.equals(_data, readBytes));
assertEquals("Unexpected length", 3, length);
length = _inputStream.read(readBytes);
assertEquals("EOF not reached", -1, length);
}
public void testSkip() throws IOException
{
_inputStream.skip(3);
byte[] readBytes = new byte[_data.length - 3];
int length = _inputStream.read(readBytes);
byte[] expected = new byte[_data.length - 3];
System.arraycopy(_data, 3, expected, 0, _data.length - 3);
assertTrue("Unexpected data", Arrays.equals(expected, readBytes));
assertEquals("Unexpected length", _data.length - 3, length);
}
public void testAvailable() throws IOException
{
int available = _inputStream.available();
assertEquals("Unexpected number of available bytes", _data.length, available);
byte[] readBytes = new byte[_data.length];
_inputStream.read(readBytes);
available = _inputStream.available();
assertEquals("Unexpected number of available bytes", 0, available);
}
public void testMarkReset() throws IOException
{
_inputStream.mark(0);
byte[] readBytes = new byte[_data.length];
int length = _inputStream.read(readBytes);
assertEquals("Unexpected length", _data.length, length);
assertEquals("Unexpected number of available bytes", 0, _inputStream.available());
_inputStream.reset();
readBytes = new byte[_data.length];
length = _inputStream.read(readBytes);
assertEquals("Unexpected length", _data.length, length);
assertEquals("Unexpected number of available bytes", 0, _inputStream.available());
}
public void testMarkSupported() throws IOException
{
assertTrue("Unexpected mark supported", _inputStream.markSupported());
}
}
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