/*
 * Copyright 1999-2011 Alibaba Group.
 *  
 * 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 com.alibaba.dubbo.common.serialize.dubbo;

import java.io.IOException;

import junit.framework.TestCase;

import com.alibaba.dubbo.common.io.UnsafeByteArrayInputStream;
import com.alibaba.dubbo.common.io.UnsafeByteArrayOutputStream;
import com.alibaba.dubbo.common.serialize.DataInput;
import com.alibaba.dubbo.common.serialize.DataOutput;
import com.alibaba.dubbo.common.serialize.support.dubbo.GenericDataInput;
import com.alibaba.dubbo.common.serialize.support.dubbo.GenericDataOutput;

public class DataInputOutputTest extends TestCase
{
	private static final String SMALL_STRING = DataInputOutputTest.class.getName(), BIG_STREAM = "1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789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0";

	private static final byte[] SMALL_BYTES = SMALL_STRING.getBytes(), BIG_BYTES = BIG_STREAM.getBytes();

	public void testMain() throws Exception
	{
		// write.
		UnsafeByteArrayOutputStream os = new UnsafeByteArrayOutputStream();
		DataOutput cos = new GenericDataOutput(os);
		writeTest(cos);

		// read.
		byte[] b = os.toByteArray();
		DataInput cis = new GenericDataInput(new UnsafeByteArrayInputStream(b));
		readTest(cis);
	}

	private void writeTest(DataOutput out) throws IOException
	{
		out.writeShort((short)'a');
		out.writeShort((short)-1);
		out.writeShort((short)1234);
		out.writeInt(0x22);
		out.writeInt(-0x22);
		out.writeInt(0x2222);
		out.writeInt(-0x2222);
		out.writeInt(0x222222);
		out.writeInt(-0x222222);
		out.writeInt(0x22222222);
		out.writeInt(-0x22222222);
		out.writeLong(0x22);
		out.writeLong(-0x22);
		out.writeLong(0x2222);
		out.writeLong(-0x2222);
		out.writeLong(0x222222);
		out.writeLong(-0x222222);
		out.writeLong(0x22222222);
		out.writeLong(-0x22222222);
		out.writeLong(0x2222222222l);
		out.writeLong(-0x2222222222l);
		out.writeLong(0x222222222222l);
		out.writeLong(-0x222222222222l);
		out.writeLong(0x22222222222222l);
		out.writeLong(-0x22222222222222l);
		out.writeLong(0x2222222222222222l);
		out.writeLong(-0x2222222222222222l);
		out.writeDouble(1212.454);
		out.writeBytes(SMALL_BYTES);
		out.writeUTF(SMALL_STRING);
		out.writeBytes(BIG_BYTES);
		out.flushBuffer();
	}

	private void readTest(DataInput in) throws IOException
	{
		assertEquals(in.readShort(), 'a');
		assertEquals(in.readShort(), -1);
		assertEquals(in.readShort(), 1234);
		assertEquals(in.readInt(), 0x22);
		assertEquals(in.readInt(), -0x22);
		assertEquals(in.readInt(), 0x2222);
		assertEquals(in.readInt(), -0x2222);
		assertEquals(in.readInt(), 0x222222);
		assertEquals(in.readInt(), -0x222222);
		assertEquals(in.readInt(), 0x22222222);
		assertEquals(in.readInt(), -0x22222222);
		assertEquals(in.readLong(), 0x22);
		assertEquals(in.readLong(), -0x22);
		assertEquals(in.readLong(), 0x2222);
		assertEquals(in.readLong(), -0x2222);
		assertEquals(in.readLong(), 0x222222);
		assertEquals(in.readLong(), -0x222222);
		assertEquals(in.readLong(), 0x22222222);
		assertEquals(in.readLong(), -0x22222222);
		assertEquals(in.readLong(), 0x2222222222l);
		assertEquals(in.readLong(), -0x2222222222l);
		assertEquals(in.readLong(), 0x222222222222l);
		assertEquals(in.readLong(), -0x222222222222l);
		assertEquals(in.readLong(), 0x22222222222222l);
		assertEquals(in.readLong(), -0x22222222222222l);
		assertEquals(in.readLong(), 0x2222222222222222l);
		assertEquals(in.readLong(), -0x2222222222222222l);
		assertEquals(in.readDouble(), 1212.454);
		assertSameArray(in.readBytes(), SMALL_BYTES);
		assertEquals(in.readUTF(), SMALL_STRING);
		assertSameArray(in.readBytes(), BIG_BYTES);
	}

	private static void assertSameArray(byte[] b1, byte[] b2)
	{
		assertEquals(b1.length, b2.length);
		for(int i=0;i<b1.length;i++)
			assertEquals(b1[i], b2[i]);
	}
}