public async Task ItDoesntSignInIfRegisteringFromTheReTaskstApi()
{
newUser.Source = TransactionSource.RestApi;
await userRegisterer.RegisterUser(newUser);
signInManagerMock.AssertWasNotCalled(mock => mock.SignInAsync(
Arg <ApplicationUser> .Is.Anything,
Arg <bool> .Is.Anything,
Arg <bool> .Is.Anything));
}