Tests for "algorithms" section

Click on each button in sequence from top to bottom without refreshing the page. Each button will bring up the Payment Request UI window.

User aborts the payment request algorithm

When presented with the payment sheet, abort the payment request (e.g., by hitting the esc key or pressing a UA provided button).

Shipping address changed algorithm

When prompted, please change or enter a new shipping address and then select Pay.

Shipping option changed algorithm

Finally, when prompted, please select "shipping option 2" and then select Pay.

If you find a buggy test, please file a bug and tag one of the suggested reviewers.