We Caught 90% More AI Memory Bugs Using Playwright E2E Tests

Short summary

AI chat products lose context after 20+ turns when session data expires or corrupts—bugs invisible to unit tests but catastrophic for users. The solution: automate E2E testing with Playwright + pytest to simulate 100-turn conversations in CI. This approach caught 90% more memory bugs by testing the full stack including frontend bundling, API streaming, and backend persistence.

• •Memory bugs in AI conversations only surface at 20+ turns, beyond manual testing reach
• •Playwright E2E tests can simulate 100-turn conversations with full browser/API/storage interaction
• •Automated approach caught 90% more bugs by testing the complete stack end-to-end

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