/*
* 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.directory.api.util;
import static org.junit.Assert.assertEquals;
import com.mycila.junit.concurrent.Concurrency;
import com.mycila.junit.concurrent.ConcurrentJunitRunner;
import org.apache.directory.api.util.ByteBuffer;
import org.junit.Test;
import org.junit.runner.RunWith;
/**
* A test case for a dynamically growing byte[].
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
@RunWith(ConcurrentJunitRunner.class)
@Concurrency()
public class ByteBufferTest
{
@Test
public void testByteBufferGrowth()
{
ByteBuffer buf = new ByteBuffer();
assertEquals( 10, buf.capacity() );
for ( int ii = 0; ii < 20; ii++ )
{
buf.append( ii );
assertEquals( ii, buf.get( ii ) );
assertEquals( ii, buf.buffer()[ii] );
}
assertEquals( 20, buf.capacity() );
buf.append( 20 );
assertEquals( 30, buf.capacity() );
// -------------------------------------------------------------------
buf = new ByteBuffer( 5 );
assertEquals( 5, buf.capacity() );
for ( int ii = 0; ii < 5; ii++ )
{
buf.append( ii );
assertEquals( ii, buf.get( ii ) );
assertEquals( ii, buf.buffer()[ii] );
}
assertEquals( 5, buf.capacity() );
buf.append( 5 );
assertEquals( 10, buf.capacity() );
}
public void testCopyOfUsedBytes()
{
ByteBuffer buf = new ByteBuffer();
byte[] bytes = buf.copyOfUsedBytes();
assertEquals( 0, bytes.length );
for ( int ii = 0; ii < 20; ii++ )
{
buf.append( ii );
assertEquals( ii, buf.get( ii ) );
assertEquals( ii, buf.buffer()[ii] );
assertEquals( ii, buf.copyOfUsedBytes()[ii] );
}
}
public void testAppendByteArray()
{
ByteBuffer buf = new ByteBuffer();
buf.append( new byte[]
{ 0, 1, 2, 3, 4 } );
for ( int ii = 0; ii < 5; ii++ )
{
assertEquals( ii, buf.get( ii ) );
assertEquals( ii, buf.buffer()[ii] );
assertEquals( ii, buf.copyOfUsedBytes()[ii] );
}
}
}