How to Do Selenium CAPTCHA Testing: Layered Approach with Feature Flags, Official Test Keys, and Real Integration

When encountering CAPTCHAs in Selenium automated testing, handle them by test layer: use environment flags or official test keys for reCAPTCHA, Turnstile, and hCaptcha in daily CI to ensure stable results; for pre-release or canary environments where real CAPTCHAs must be faced, use a small number of smoke tests with recognition APIs to complete parameter extraction, token injection, callback triggering, and business assertions.