public async Task Handle_InvalidMessageChatId_NotFound()
        {
            var sut = new GetMessageChatByIdQueryHandler(_context, _mapper);

            var query = new GetMessageChatByIdQuery
            {
                MessageChatId = Guid.NewGuid()
            };
            await Assert.ThrowsAsync <NotFoundException>(() => sut.Handle(query, CancellationToken.None));
        }
        public async Task Handle_ValidMessageChatId_NotFound()
        {
            var sut = new GetMessageChatByIdQueryHandler(_context, _mapper);

            var result = await sut.Handle(new GetMessageChatByIdQuery
            {
                MessageChatId = validMessageChatId
            }
                                          , CancellationToken.None);

            result.ShouldBeOfType <MessageChatModel>();
            result.Id.ShouldBe(validMessageChatId);
        }