broker-plugins/amqp-0-10-protocol/src/test/java/org/apache/qpid/server/protocol/v0_10/transport/BBEncoderTest.java

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 *
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 * 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
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 * Unless required by applicable law or agreed to in writing,
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package org.apache.qpid.server.protocol.v0_10.transport;

import static java.nio.charset.StandardCharsets.UTF_8;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertThat;

import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;

import org.apache.qpid.test.utils.QpidTestCase;

public class BBEncoderTest extends QpidTestCase
{

    public void testGrow()
    {
        BBEncoder enc = new BBEncoder(4);
        enc.writeInt32(0xDEADBEEF);
        ByteBuffer buf = enc.buffer();
        assertEquals(0xDEADBEEF, buf.getInt(0));
        enc.writeInt32(0xBEEFDEAD);
        buf = enc.buffer();
        assertEquals(0xDEADBEEF, buf.getInt(0));
        assertEquals(0xBEEFDEAD, buf.getInt(4));
    }


    public void testReadWriteStruct()
    {
        BBEncoder encoder = new BBEncoder(4);

        ReplyTo replyTo = new ReplyTo("amq.direct", "test");
        encoder.writeStruct(ReplyTo.TYPE, replyTo);

        ByteBuffer buffer = encoder.buffer();

        assertEquals("Unexpected size", EncoderUtils.getStructLength(ReplyTo.TYPE, replyTo), buffer.remaining());

        BBDecoder decoder = new BBDecoder();
        decoder.init(buffer);

        ReplyTo decoded = (ReplyTo)decoder.readStruct(ReplyTo.TYPE);

        assertEquals("Unexpected exchange", replyTo.getExchange(), decoded.getExchange());
        assertEquals("Unexpected routing key", replyTo.getRoutingKey(), decoded.getRoutingKey());
    }

    public void testReadWriteStruct32()
    {
        BBEncoder encoder = new BBEncoder(4);
        Map<String, Object> applicationHeaders = new HashMap<>();
        applicationHeaders.put("testProperty", "testValue");
        applicationHeaders.put("list", Arrays.asList("a", 1, 2.0));
        applicationHeaders.put("map", Collections.singletonMap("mapKey", "mapValue"));
        MessageProperties messageProperties = new MessageProperties(10,
                                                                    UUID.randomUUID(),
                                                                    "abc".getBytes(UTF_8),
                                                                    new ReplyTo("amq.direct", "test"),
                                                                    "text/plain",
                                                                    "identity",
                                                                    "cba".getBytes(UTF_8),
                                                                    "app".getBytes(UTF_8),
                                                                    applicationHeaders);

        encoder.writeStruct32(messageProperties);

        ByteBuffer buffer = encoder.buffer();

        assertEquals("Unexpected size", EncoderUtils.getStruct32Length(messageProperties), buffer.remaining());

        BBDecoder decoder = new BBDecoder();
        decoder.init(buffer);

        MessageProperties decoded = (MessageProperties)decoder.readStruct32();

        assertEquals("Unexpected content length", messageProperties.getContentLength(), decoded.getContentLength());
        assertEquals("Unexpected message id", messageProperties.getMessageId(), decoded.getMessageId());
        assertArrayEquals("Unexpected correlation id", messageProperties.getCorrelationId(), decoded.getCorrelationId());
        assertEquals("Unexpected reply to", messageProperties.getReplyTo(), decoded.getReplyTo());
        assertEquals("Unexpected content type", messageProperties.getContentType(), decoded.getContentType());
        assertEquals("Unexpected content encoding", messageProperties.getContentEncoding(), decoded.getContentEncoding());
        assertArrayEquals("Unexpected user id", messageProperties.getUserId(), decoded.getUserId());
        assertArrayEquals("Unexpected application id", messageProperties.getAppId(), decoded.getAppId());
        assertEquals("Unexpected application headers", messageProperties.getApplicationHeaders(), decoded.getApplicationHeaders());
    }

    public void testEncodedStr8Caching()
    {
        String testString = "Test";
        Cache< String, byte[]> original = BBEncoder.getEncodedStringCache();
        Cache< String, byte[]> cache = CacheBuilder.newBuilder().maximumSize(2).build();
        try
        {
            BBEncoder encoder = new BBEncoder(64);
            BBEncoder.setEncodedStringCache(cache);
            encoder.writeStr8(testString);
            encoder.writeStr8(testString);

            assertThat(cache.size(), is(equalTo(1L)));
        }
        finally
        {
            cache.cleanUp();
            BBEncoder.setEncodedStringCache(original);
        }
    }
}