alluxio.grpc.ReadResponseMarshallerTest.java Source code

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Here is the source code for alluxio.grpc.ReadResponseMarshallerTest.java

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/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.grpc;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import alluxio.network.protocol.databuffer.DataBuffer;
import alluxio.network.protocol.databuffer.NettyDataBuffer;

import com.google.protobuf.ByteString;
import io.grpc.Drainable;
import io.netty.buffer.Unpooled;
import org.apache.commons.io.output.ByteArrayOutputStream;
import org.junit.Test;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Unit tests for {@link ReadResponseMarshaller}.
 */
public final class ReadResponseMarshallerTest {

    @Test
    public void streamEmptyMessage() throws Exception {
        validateStream(ReadResponse.getDefaultInstance());
    }

    @Test
    public void streamMessage() throws Exception {
        validateStream(buildResponse("test".getBytes()));
    }

    @Test
    public void parseEmptyMessage() throws Exception {
        validateParse(ReadResponse.getDefaultInstance());
    }

    @Test
    public void parseMessage() throws Exception {
        validateParse(buildResponse("test".getBytes()));
    }

    private void validateStream(ReadResponse message) throws IOException {
        ReadResponseMarshaller marshaller = new ReadResponseMarshaller();
        byte[] expected = message.toByteArray();
        if (message.hasChunk() && message.getChunk().hasData()) {
            marshaller.offerBuffer(new NettyDataBuffer(
                    Unpooled.wrappedBuffer(message.getChunk().getData().asReadOnlyByteBuffer())), message);
        }
        InputStream stream = marshaller.stream(message);
        assertTrue(stream instanceof Drainable);
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        ((Drainable) stream).drainTo(outputStream);
        assertArrayEquals(expected, outputStream.toByteArray());
    }

    private void validateParse(ReadResponse message) {
        ReadResponseMarshaller marshaller = new ReadResponseMarshaller();
        byte[] data = message.toByteArray();
        ReadResponse parsedMessage = marshaller.parse(new ByteArrayInputStream(data));
        if (data.length > 0) {
            DataBuffer buffer = marshaller.pollBuffer(parsedMessage);
            assertNotNull(buffer);
            byte[] bytes = new byte[buffer.readableBytes()];
            buffer.readBytes(bytes, 0, bytes.length);
            parsedMessage = parsedMessage.toBuilder()
                    .setChunk(Chunk.newBuilder().setData(ByteString.copyFrom(bytes)).build()).build();
        }
        assertEquals(message, parsedMessage);
    }

    private ReadResponse buildResponse(byte[] data) {
        return ReadResponse.newBuilder().setChunk(Chunk.newBuilder().setData(ByteString.copyFrom(data))).build();
    }
}