DatagramPacketDecoderTest Class — netty Architecture

Source Code

codec-base/src/test/java/io/netty/handler/codec/DatagramPacketDecoderTest.java lines 37–96

public class DatagramPacketDecoderTest {

    private EmbeddedChannel channel;

    @BeforeEach
    public void setUp() {
        channel = new EmbeddedChannel(
                new DatagramPacketDecoder(
                        new StringDecoder(CharsetUtil.UTF_8)));
    }

    @AfterEach
    public void tearDown() {
        assertFalse(channel.finish());
    }

    @Test
    public void testDecode() {
        InetSocketAddress recipient = SocketUtils.socketAddress("127.0.0.1", 10000);
        InetSocketAddress sender = SocketUtils.socketAddress("127.0.0.1", 20000);
        ByteBuf content = Unpooled.wrappedBuffer("netty".getBytes(CharsetUtil.UTF_8));
        assertTrue(channel.writeInbound(new DatagramPacket(content, recipient, sender)));
        assertEquals("netty", channel.readInbound());
    }

    @Test
    public void testIsNotSharable() {
        testIsSharable(false);
    }

    @Test
    public void testIsSharable() {
        testIsSharable(true);
    }

    private static void testIsSharable(boolean sharable) {
        MessageToMessageDecoder<ByteBuf> wrapped = new TestMessageToMessageDecoder(sharable);
        DatagramPacketDecoder decoder = new DatagramPacketDecoder(wrapped);
        assertEquals(wrapped.isSharable(), decoder.isSharable());
    }

    private static final class TestMessageToMessageDecoder extends MessageToMessageDecoder<ByteBuf> {

        private final boolean sharable;

        TestMessageToMessageDecoder(boolean sharable) {
            this.sharable = sharable;
        }

        @Override
        protected void decode(ChannelHandlerContext ctx, ByteBuf msg, List<Object> out) throws Exception {
            // NOOP
        }

        @Override
        public boolean isSharable() {
            return sharable;
        }
    }
}