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Very neat.

Just wanted to add, the demo works if you use the 4242 sequence for all fields (YMMV).

There's a full list of test cards available here: https://stripe.com/docs/testing#cards

I don't think I've ever seen a demo card that doesn't accept any valid string for expiration/name/CVC.

I tried with all ones (after the card #) and it would not accept the expiry date. I admit, I might be part of the problem. ;)

The expiration must be in the future

That makes a surprising amount of sense.

PayPal's PayFlow Pro product would return valid for 1XX, 2XX, 3XX CSCs and different errors (mostly CSC verification related) for 4XX, 5XX, 6XX, 7XX, 8XX, 9XX. Was quite useful for testing.

I think you just pointed out about the only useful thing out of the entire PayPal integration experience.

I'd love to know how it got through their formal Make Developers Hate Us processes.

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