etl/test/test_message_packet.cpp

/******************************************************************************
The MIT License(MIT)

Embedded Template Library.
https://github.com/ETLCPP/etl
https://www.etlcpp.com

Copyright(c) 2020 jwellbelove

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******************************************************************************/

#include "UnitTest++/UnitTest++.h"
#include "ExtraCheckMacros.h"

#include "etl/message_packet.h"

#include <string>

//***************************************************************************
// The set of messages.
//***************************************************************************
namespace
{
  enum
  {
    MESSAGE1,
    MESSAGE2,
    MESSAGE3,
    MESSAGE4
  };

  struct Message1 : public etl::message<MESSAGE1>
  {
    Message1(int x_)
      : x(x_)
      , moved(false)
      , copied(false)
    {
    }

    Message1(const Message1& other)
      : x(other.x)
      , moved(false)
      , copied(true)
    {
    }

    Message1(Message1&& other)
      : x(other.x)
      , moved(true)
      , copied(false)
    {
    }

    Message1& operator =(const Message1& other)
    {
      x = other.x;
      moved = false;
      copied = true;
      return *this;
    }

    Message1& operator =(Message1&& other)
    {
      x = other.x;
      moved = true;
      copied = false;
      return *this;
    }

    int x;
    bool moved;
    bool copied;
  };

  struct Message2 : public etl::message<MESSAGE2>
  {
    Message2(double x_)
      : x(x_)
      , moved(false)
      , copied(false)
    {
    }

    Message2(const Message2& other)
      : x(other.x)
      , moved(false)
      , copied(true)
    {
    }

    Message2(Message2&& other)
      : x(other.x)
      , moved(true)
      , copied(false)
    {
    }

    Message2& operator =(const Message2& other)
    {
      x = other.x;
      moved = false;
      copied = true;
      return *this;
    }

    Message2& operator =(Message2&& other)
    {
      x = other.x;
      moved = true;
      copied = false;
      return *this;
    }

    double x;
    bool moved;
    bool copied;
  };

  struct Message3 : public etl::message<MESSAGE3>
  {
    Message3(std::string x_)
      : x(x_)
      , moved(false)
      , copied(false)
    {
    }

    Message3(const Message3& other)
      : x(other.x)
      , moved(false)
      , copied(true)
    {
    }

    Message3(Message3&& other)
      : x(other.x)
      , moved(true)
      , copied(false)
    {
    }

    Message3& operator =(const Message3& other)
    {
      x = other.x;
      moved = false;
      copied = true;
      return *this;
    }

    Message3& operator =(Message3&& other)
    {
      x = other.x;
      moved = true;
      copied = false;
      return *this;
    }

    std::string x;
    bool moved;
    bool copied;
  };

  struct Message4 : public etl::message<MESSAGE4>
  {
  };

  using Packet = etl::message_packet<Message1, Message2, Message3>;

  SUITE(test_message_packet)
  {
    //*************************************************************************
    TEST(message_packet_construction)
    {
      Message1 message1(1);
      Message2 message2(2.2);
      Message3 message3("3");
      Message4 message4;

      Packet packet1(message1);
      Packet packet2(message2);
      Packet packet3(message3);

      // The next line should result in a compile error.
      //Packet packet4(message4);

      CHECK_EQUAL(MESSAGE1, packet1.get().message_id);
      CHECK_EQUAL(MESSAGE2, packet2.get().message_id);
      CHECK_EQUAL(MESSAGE3, packet3.get().message_id);

      CHECK(!static_cast<Message1&>(packet1.get()).moved);
      CHECK(!static_cast<Message2&>(packet2.get()).moved);
      CHECK(!static_cast<Message3&>(packet3.get()).moved);

      CHECK(static_cast<Message1&>(packet1.get()).copied);
      CHECK(static_cast<Message2&>(packet2.get()).copied);
      CHECK(static_cast<Message3&>(packet3.get()).copied);

      CHECK_EQUAL(1,   static_cast<Message1&>(packet1.get()).x);
      CHECK_EQUAL(2.2, static_cast<Message2&>(packet2.get()).x);
      CHECK_EQUAL("3", static_cast<Message3&>(packet3.get()).x);
    }

    //*************************************************************************
    TEST(message_packet_move_construction)
    {
      Message1 message1(1);
      Message2 message2(2.2);

      Packet packet1(message1);
      Packet packet2(std::move(message2));

      CHECK_EQUAL(MESSAGE1, packet1.get().message_id);
      CHECK_EQUAL(MESSAGE2, packet2.get().message_id);

      CHECK(!static_cast<Message1&>(packet1.get()).moved);
      CHECK(static_cast<Message2&>(packet2.get()).moved);

      CHECK(static_cast<Message1&>(packet1.get()).copied);
      CHECK(!static_cast<Message2&>(packet2.get()).copied);

      CHECK_EQUAL(1, static_cast<Message1&>(packet1.get()).x);
      CHECK_EQUAL(2.2, static_cast<Message2&>(packet2.get()).x);
    }

    //*************************************************************************
    TEST(message_constant_packet_construction)
    {
      Message1 message1(1);
      Message2 message2(2.2);
      Message3 message3("3");
      Message4 message4;

      const Packet packet1(message1);
      const Packet packet2(message2);
      const Packet packet3(message3);

      // The next line should result in a compile error.
      //Packet packet4(message4);

      CHECK_EQUAL(MESSAGE1, packet1.get().message_id);
      CHECK_EQUAL(MESSAGE2, packet2.get().message_id);
      CHECK_EQUAL(MESSAGE3, packet3.get().message_id);

      CHECK_EQUAL(1,   static_cast<const Message1&>(packet1.get()).x);
      CHECK_EQUAL(2.2, static_cast<const Message2&>(packet2.get()).x);
      CHECK_EQUAL("3", static_cast<const Message3&>(packet3.get()).x);
    }

    //*************************************************************************
    TEST(message_packet_construction_from_base)
    {
      Message1 message1(1);
      Message2 message2(2.2);
      Message3 message3("3");
      Message4 message4;

      Packet packet1(static_cast<etl::imessage&>(message1));
      Packet packet2(static_cast<etl::imessage&>(message2));
      Packet packet3(static_cast<etl::imessage&>(message3));

      CHECK_THROW(Packet packet4(static_cast<etl::imessage&>(message4)), etl::unhandled_message_exception);

      CHECK_EQUAL(MESSAGE1, packet1.get().message_id);
      CHECK_EQUAL(MESSAGE2, packet2.get().message_id);
      CHECK_EQUAL(MESSAGE3, packet3.get().message_id);

      CHECK_EQUAL(1,   static_cast<Message1&>(packet1.get()).x);
      CHECK_EQUAL(2.2, static_cast<Message2&>(packet2.get()).x);
      CHECK_EQUAL("3", static_cast<Message3&>(packet3.get()).x);
    }

    //*************************************************************************
    TEST(message_packet_copy_consructor)
    {
      Message1 message1(1);
      Message2 message2(2.2);

      Packet packet1(message1);
      Packet packet2(packet1);

      CHECK_EQUAL(MESSAGE1, packet1.get().message_id);
      CHECK_EQUAL(MESSAGE1, packet2.get().message_id);

      CHECK(!static_cast<Message1&>(packet1.get()).moved);
      CHECK(!static_cast<Message1&>(packet2.get()).moved);

      CHECK(static_cast<Message1&>(packet1.get()).copied);
      CHECK(static_cast<Message1&>(packet2.get()).copied);

      CHECK_EQUAL(1, static_cast<Message1&>(packet1.get()).x);
      CHECK_EQUAL(1, static_cast<Message1&>(packet2.get()).x);
    }

    //*************************************************************************
    TEST(message_packet_move_consructor)
    {
      Message1 message1(1);
      Message2 message2(2.2);

      Packet packet1(message1);
      Packet packet2(std::move(Packet(message1)));

      CHECK_EQUAL(MESSAGE1, packet1.get().message_id);
      CHECK_EQUAL(MESSAGE1, packet2.get().message_id);

      CHECK(!static_cast<Message1&>(packet1.get()).moved);
      CHECK(static_cast<Message1&>(packet2.get()).moved);

      CHECK(static_cast<Message1&>(packet1.get()).copied);
      CHECK(!static_cast<Message1&>(packet2.get()).copied);

      CHECK_EQUAL(1, static_cast<Message1&>(packet1.get()).x);
      CHECK_EQUAL(1, static_cast<Message1&>(packet2.get()).x);
    }

    //*************************************************************************
    TEST(message_packet_assignment)
    {
      Message1 message1(1);
      Message2 message2(2.2);

      Packet packet1(message1);
      Packet packet2;

      packet2 = packet1;

      CHECK_EQUAL(MESSAGE1, packet1.get().message_id);
      CHECK_EQUAL(MESSAGE1, packet2.get().message_id);

      CHECK(!static_cast<Message1&>(packet1.get()).moved);
      CHECK(!static_cast<Message1&>(packet2.get()).moved);

      CHECK(static_cast<Message1&>(packet1.get()).copied);
      CHECK(static_cast<Message1&>(packet2.get()).copied);

      CHECK_EQUAL(1, static_cast<Message1&>(packet1.get()).x);
      CHECK_EQUAL(1, static_cast<Message1&>(packet2.get()).x);
    }

    //*************************************************************************
    TEST(message_packet_move_assignment)
    {
      Message1 message1(1);
      Message2 message2(2.2);

      Packet packet1(message1);
      Packet packet2;

      packet2 = std::move(packet1);

      CHECK_EQUAL(MESSAGE1, packet1.get().message_id);
      CHECK_EQUAL(MESSAGE1, packet2.get().message_id);

      CHECK(!static_cast<Message1&>(packet1.get()).moved);
      CHECK(static_cast<Message1&>(packet2.get()).moved);

      CHECK(static_cast<Message1&>(packet1.get()).copied);
      CHECK(!static_cast<Message1&>(packet2.get()).copied);

      CHECK_EQUAL(1, static_cast<Message1&>(packet1.get()).x);
      CHECK_EQUAL(1, static_cast<Message1&>(packet2.get()).x);
    }
  };
}