public void OperatorKw_As()
{
//ARRANGE
BusinessCustomer cust = new BusinessCustomer {
Name = "Stefan", BusinessTel = "+4498347"
};
Customer customer = new Customer();
//ACT
Customer bcCastAble = cust as Customer;
PrivateCustomer custNotCastAble = customer as PrivateCustomer;
//ASSERT - Versucht eine Instanz zu Casten. Ist null im Fehlerfall. (Besonderheit: Es wird keine Exception geworfen)
bcCastAble.Should().NotBeNull("BusinessCustomer should be castable to Customer");
custNotCastAble.Should().BeNull("Customer can not be casted to PrivateCustomer but the other way round");
}
