This add-on activates only on driverpracticaltest.dvsa.gov.uk, which requires a real DVSA driving-test booking (licence number + booking reference) to reach the slot pages. We cannot provide a shared test account for a UK government service.

To verify behaviour without an account, open test/test-runner.html from the source. It loads the real content.js and content.css against mock DVSA markup with the extension API stubbed, and demonstrates: slot detection, the earlier-date and centre filters, auto-select walking date → time → Reserve, and the hard stop at the CAPTCHA/confirmation page.

The add-on never solves CAPTCHAs, logs in, or completes payment — the user does all of that. No data is collected or sent anywhere; settings are stored via storage.local. No remote endpoints are contacted.