public void service_must_return_correct_user_message_with_marker_for_user()
        {
            var message     = DatabaseHelper.CreateValidMessage(DatabaseHelper.UserTest4);
            var userMessage = DatabaseHelper.CreateValidUserMessage(message, DatabaseHelper.UserTest4);

            _messageRepository.Create(message);
            _userMessageRepository.Create(userMessage);
            userMessage.IsMarkerSet = true;
            _unitOfWork.Commit();

            UserMessage userMessageFromService = _userMessageService.FindUserMessageWithMarker(DatabaseHelper.UserTest4.Id);

            Assert.AreEqual(userMessage.Id, userMessageFromService.Id, "Service must return correct user message with marker by user id");
        }