Encountered this issue while building an AI Agent platform. Here's the root cause and solution.
Use page.route() to intercept all API requests and return predefined mock data. Tests don't depend on real backend, can run stably in any environment, and avoid side effects like creating/deleting data.
Encountered this issue while building an AI Agent platform. Here's the root cause and solution.
Use Playwright's test.extend() to create a custom fixture that injects auth token into localStorage via page.addInitScript() before page load. Tests use authenticatedPage instead of page, automatically getting logged-in state without repeating login in each test.
Encountered this issue while building an AI Agent SaaS platform for a client. Here's the root cause and solution.
E2E tests shouldn't depend on real OAuth login flows. By detecting localStorage test markers in the useAuth hook, you can inject mock auth state directly and skip Supabase initialization. Also change the Zustand store's loading default to false to prevent AuthGuard from showing an infinite spinner.