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BoundedNetworkChannelTest.java
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BoundedNetworkChannelTest.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j Enterprise Edition. The included source
* code can be redistributed and/or modified under the terms of the
* GNU AFFERO GENERAL PUBLIC LICENSE Version 3
* (http://www.fsf.org/licensing/licenses/agpl-3.0.html) with the
* Commons Clause, as found in the associated LICENSE.txt file.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* Neo4j object code can be licensed independently from the source
* under separate terms from the AGPL. Inquiries can be directed to:
* licensing@neo4j.com
*
* More information is also available at:
* https://neo4j.com/licensing/
*/
package org.neo4j.causalclustering.messaging;
import io.netty.buffer.ByteBuf;
import org.junit.Rule;
import org.junit.Test;
import java.io.IOException;
import java.util.LinkedList;
import org.neo4j.causalclustering.helpers.Buffers;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
public class BoundedNetworkChannelTest
{
@Rule
public final Buffers buffers = new Buffers();
@Test
public void shouldSerializeIntoChunksOfGivenSize()
{
// given
int chunkSize = 8;
LinkedList<ByteBuf> byteBufs = new LinkedList<>();
BoundedNetworkChannel channel = new BoundedNetworkChannel( buffers, chunkSize, byteBufs );
// and data is written
byte[] array = new byte[10];
channel.put( (byte) 1 );
channel.putInt( 1 );
channel.putFloat( 1.0f );
channel.putDouble( 1.0d );
channel.putShort( (short) 1 );
channel.putLong( 1 );
channel.put( array, array.length );
channel.flush();
// when
ByteBuf combinedByteBuf = buffers.buffer();
ByteBuf byteBuf;
while ( (byteBuf = byteBufs.poll()) != null )
{
assertEquals( chunkSize, byteBuf.capacity() );
combinedByteBuf.writeBytes( byteBuf );
}
//then
assertEquals( (byte) 1, combinedByteBuf.readByte() );
assertEquals( 1, combinedByteBuf.readInt() );
assertEquals( 1.0f, combinedByteBuf.readFloat() );
assertEquals( 1.0d, combinedByteBuf.readDouble() );
assertEquals( (short) 1, combinedByteBuf.readShort() );
assertEquals( 1L, combinedByteBuf.readLong() );
byte[] bytes = new byte[array.length];
combinedByteBuf.readBytes( bytes );
assertArrayEquals( array, bytes );
assertEquals( 0, combinedByteBuf.readableBytes() );
}
@Test
public void shouldReturnNullIfQueueIsEmpty()
{
// given
int chunkSize = 8;
LinkedList<ByteBuf> byteBufs = new LinkedList<>();
BoundedNetworkChannel channel = new BoundedNetworkChannel( buffers, chunkSize, byteBufs );
// when
channel.putLong( 1L );
channel.putLong( 1L );
// then
assertNotNull( byteBufs.poll() );
assertNull( byteBufs.poll() );
// when
channel.putLong( 2L );
// then
assertNotNull( byteBufs.poll() );
assertNull( byteBufs.poll() );
// when
channel.flush();
// then
assertNotNull( byteBufs.poll() );
}
@Test( expected = IllegalStateException.class )
public void shouldThrowIllegalStatAfterClosed()
{
int chunkSize = 8;
BoundedNetworkChannel channel = new BoundedNetworkChannel( buffers, chunkSize, new LinkedList<>() );
channel.close();
channel.putInt( 1 );
}
}