public void TestAddUserToGroupChat()
        {
            mockConversationRepository.Setup(x => x.AddUserToGroupChat(It.IsAny <string>(), It.IsAny <string>())).Returns(user);
            var  chatService = new ChatService.Services.ChatService(mockConversationRepository.Object, mockMessageRepository.Object);
            User userActual  = chatService.AddUserToGroupChat("asf6af5asf4s4af3afa5f", "asf6af5asf4s4af3afa5f");

            Assert.AreEqual(userActual, user);
        }