public void VerifiesPinOnCardEntry_ShouldPass()
{
var service = new AuthenticationService();
Assert.DoesNotThrow(() => service.VerifyPin("0123", 123456, 12345678));
}
public void VerifiesPinOnCardEntry_ShouldFail()
{
var service = new AuthenticationService();
Assert.Throws<AuthenticationException>(() => service.VerifyPin("werfvwef", 123456, 12345678));
}