@wvanbergen because it's a little bit more complicated than that. Let me try to detail the flow

1. We do a normal autrise call appending the browser info.
2. Adyen decides whether or not if the card is 3D enrolled.
3. Say it's enrolled. Adyen sends back a different response with result code redirectShopper.
4. We need to grab a url from that response and redirect the customer to that url.
5. Customer goes there and enter his user and password to authenticate on issuer website.
6. Once that's done Adyen sends a POST back to our store with the those params.

As far as I can see we can do a spec with a functional call to get those params. Thats why we need those global constants on the specs (or any other way to manually set those params)