public async Task CreateAccount_SameUserAndPass_Fail(string displayname, string password, string username)
        {
            //Arrange
            MainService service = CreateService();
            //Act
            var result = await service.CreateAccount(displayname, password, username);

            //Assert
            Assert.IsNull(result);
        }
        public async Task CreateAccount_Success(string displayname, string password, string username)
        {
            //Arrange
            MainService service = CreateService();
            //Act
            var result = await service.CreateAccount(displayname, password, username);

            //Assert
            Assert.AreEqual(displayname, result.Displayname);
            Assert.AreEqual(username, result.Username);
            Assert.AreEqual(password, result.Password);
            Assert.IsNotNull(result.Id);
        }