AbstractDecoderTest Class — netty Architecture

Source Code

codec-compression/src/test/java/io/netty/handler/codec/compression/AbstractDecoderTest.java lines 31–152

@TestInstance(TestInstance.Lifecycle.PER_CLASS)
public abstract class AbstractDecoderTest extends AbstractCompressionTest {

    protected static final ByteBuf WRAPPED_BYTES_SMALL = Unpooled.unreleasableBuffer(
            Unpooled.wrappedBuffer(BYTES_SMALL)).asReadOnly();
    protected static final ByteBuf WRAPPED_BYTES_LARGE = Unpooled.unreleasableBuffer(
            Unpooled.wrappedBuffer(BYTES_LARGE)).asReadOnly();

    protected EmbeddedChannel channel;

    protected byte[] compressedBytesSmall;
    protected byte[] compressedBytesLarge;

    protected AbstractDecoderTest() throws Exception {
        compressedBytesSmall = compress(BYTES_SMALL);
        compressedBytesLarge = compress(BYTES_LARGE);
    }

    /**
     * Compresses data with some external library.
     */
    protected abstract byte[] compress(byte[] data) throws Exception;

    @BeforeEach
    public final void initChannel() {
        channel = createChannel();
    }

    protected abstract EmbeddedChannel createChannel();

    @AfterEach
    public void destroyChannel() {
        if (channel != null) {
            channel.finishAndReleaseAll();
            channel = null;
        }
    }

    public ByteBuf[] smallData() {
        ByteBuf heap = Unpooled.wrappedBuffer(compressedBytesSmall);
        ByteBuf direct = Unpooled.directBuffer(compressedBytesSmall.length);
        direct.writeBytes(compressedBytesSmall);
        return new ByteBuf[] {heap, direct};
    }

    public ByteBuf[] largeData() {
        ByteBuf heap = Unpooled.wrappedBuffer(compressedBytesLarge);
        ByteBuf direct = Unpooled.directBuffer(compressedBytesLarge.length);
        direct.writeBytes(compressedBytesLarge);
        return new ByteBuf[] {heap, direct};
    }

    @ParameterizedTest
    @MethodSource("smallData")
    public void testDecompressionOfSmallChunkOfData(ByteBuf data) throws Exception {
        testDecompression(WRAPPED_BYTES_SMALL.duplicate(), data);
    }

    @ParameterizedTest
    @MethodSource("largeData")
    public void testDecompressionOfLargeChunkOfData(ByteBuf data) throws Exception {
        testDecompression(WRAPPED_BYTES_LARGE.duplicate(), data);
    }

    @ParameterizedTest
    @MethodSource("largeData")
    public void testDecompressionOfBatchedFlowOfData(ByteBuf data) throws Exception {
        testDecompressionOfBatchedFlow(WRAPPED_BYTES_LARGE.duplicate(), data);
    }

    protected void testDecompression(final ByteBuf expected, final ByteBuf data) throws Exception {
        assertTrue(channel.writeInbound(data));

        ByteBuf decompressed = readDecompressed(channel);
        assertEquals(expected, decompressed);

        decompressed.release();
    }

    protected void testDecompressionOfBatchedFlow(final ByteBuf expected, final ByteBuf data) throws Exception {
        final int compressedLength = data.readableBytes();