How to Test for Dark Patterns in Playwright E2E Test Suites

Everyday Search Queries & Common Issues

How shoppers, developers, and compliance teams naturally search for this issue:

“Why did the price jump right before payment at checkout?”

This is known as 'Drip Pricing' or hidden costs, where mandatory fees are hidden until the final purchase step. The FTC and EU regulators have classified this as illegal deceptive conduct.

“Why is there no button to cancel my recurring subscription?”

This is called a 'Roach Motel' or obstruction pattern. Under the FTC Click-to-Cancel rule, cancellation must be fully available online within the same number of clicks as signing up.

“Are countdown timers on websites real or fake?”

Many eCommerce countdown timers are generated by local JavaScript loops that reset upon page refresh to fabricate artificial urgency. Regulators routinely fine stores for deceptive timers.

“Can an online store add extra items or shipping warranty to my cart?”

No. 'Sneak into Basket' techniques violate consumer protection guidelines by adding unrequested products or fees without explicit user affirmative consent.

Make DarkLens Your Preferred Regulatory Source

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