Adblock Labs — Browser Blocking Test Suite

Internal test pages for verifying Adblock end-to-end blocking behaviour in Chrome.

Phase 1 pages

third-party-script — loads googletagmanager.com/gtag/js. Expected: blocked.
tracking-pixel — loads a 1×1 from google-analytics.com/collect. Expected: blocked.
allow-list-control — fetches a benign first-party asset. Expected: NOT blocked (over-blocking canary).

Note: these pages are consumed by BlockingRecorder in Adblock.ReleaseTests. They report verdicts via window.__adblockTestResult and are evaluated against CDP Network.loadingFailed events. Manual visits are fine for sanity checks; meaningful pass/fail comes from the automated runner. See Linear ENG-682.