public void When__UserStore_Remove_Login__Expect__User_Param_Null_Exception() { Assert.ThrowsAsync(typeof(ArgumentNullException), async() => { UserLoginInfo login = new UserLoginInfo("Yahoo", "341113DF-9091-4750-A2DD-9A1B56A8FCDC"); await _userStore.RemoveLoginAsync(null, login).ConfigureAwait(false); }, "Exception not thrown"); }