private void testMessageWithOnlyFixedHeaderAndMessageIdVariableHeader(MqttMessageType messageType)
throws Exception {
MqttMessage message = createMessageWithFixedHeaderAndMessageIdVariableHeader(messageType);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
final List<Object> out = new LinkedList<>();
mqttDecoder.decode(ctx, byteBuf, out);
assertEquals("Expected one object bout got " + out.size(), 1, out.size());
final MqttMessage decodedMessage = (MqttMessage) out.get(0);
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validateMessageIdVariableHeader(
(MqttPacketIdVariableHeader) message.variableHeader(),
(MqttPacketIdVariableHeader) decodedMessage.variableHeader());
}
