public async Task GetConversations_ReturnOk()
        {
            //Arrange
            IList <Conversation> conversations = new List <Conversation> {
                GenerateFake.Conversation(),
                                 GenerateFake.Conversation(),
                                 GenerateFake.Conversation()
            };

            _mockRepo.Setup(repo => repo.GetConversations()).ReturnsAsync(conversations);

            //Act
            var response = await _conversationController.GetConversations();

            //Assert
            Assert.IsAssignableFrom <OkObjectResult>(response);
        }