public void TestGetAllMember()
        {
            IEnumerable <User> _iEnumerableUser = listUsers;

            mockConversationRepository.Setup(x => x.GetAllUserInConversation(It.IsAny <string>())).Returns(_iEnumerableUser);
            var chatService = new ChatService.Services.ChatService(mockConversationRepository.Object, mockMessageRepository.Object);
            IEnumerable <User> iEnumerableGetAllMemberActual = chatService.GetAllMember("asfas9fdsa8fa7f6sf6as");
            User userActual = iEnumerableGetAllMemberActual.FirstOrDefault();

            Assert.AreEqual(userActual.Id, "5d4d012613376b00013a8908");
        }