CodecMqttTest Class — netty Architecture

Source Code

testsuite-jpms/src/test/java/io/netty/testsuite_jpms/test/CodecMqttTest.java lines 36–81

public class CodecMqttTest {

    private static final String CLIENT_ID = "RANDOM_TEST_CLIENT";
    private static final String WILL_TOPIC = "/my_will";
    private static final String WILL_MESSAGE = "gone";
    private static final String USER_NAME = "happy_user";
    private static final String PASSWORD = "123_or_no_pwd";
    private static final int KEEP_ALIVE_SECONDS = 600;

    @Test
    public void testCodec() {
        MqttConnectMessage msg = MqttMessageBuilders.connect()
                .clientId(CLIENT_ID)
                .protocolVersion(MqttVersion.MQTT_3_1)
                .username(USER_NAME)
                .password(PASSWORD.getBytes(CharsetUtil.UTF_8))
                .properties(MqttProperties.NO_PROPERTIES)
                .willRetain(true)
                .willQoS(MqttQoS.AT_LEAST_ONCE)
                .willFlag(true)
                .willTopic(WILL_TOPIC)
                .willMessage(WILL_MESSAGE.getBytes(CharsetUtil.UTF_8))
                .willProperties(MqttProperties.NO_PROPERTIES)
                .cleanSession(true)
                .keepAlive(KEEP_ALIVE_SECONDS)
                .build();
        EmbeddedChannel channel = new EmbeddedChannel(MqttEncoder.INSTANCE, new MqttDecoder());
        assertTrue(channel.writeOutbound(msg));
        ByteBuf buffer = channel.readOutbound();
        assertNull(channel.readOutbound());
        channel.writeInbound(buffer);
        Object o = channel.readInbound();
        assertEquals(MqttConnectMessage.class, o.getClass());
        msg = (MqttConnectMessage) o;
        MqttConnectVariableHeader varHeaders = msg.variableHeader();
        assertEquals(MqttQoS.AT_LEAST_ONCE.value(), varHeaders.willQos());
        assertEquals(KEEP_ALIVE_SECONDS, varHeaders.keepAliveTimeSeconds());
        MqttConnectPayload payload = msg.payload();
        assertEquals(CLIENT_ID, payload.clientIdentifier());
        assertEquals(USER_NAME, payload.userName());
        assertEquals(PASSWORD, payload.password());
        assertEquals(WILL_TOPIC, payload.willTopic());
        assertEquals(WILL_MESSAGE, payload.willMessage());
        assertFalse(channel.finish());
    }
}