mock-infrastructure-engineer

MSW mocking reduces test setup overhead by caching handlers and reusing routes across tests, dropping per-test initialization from seconds to milliseconds. This Skill implements handler caching and fixture management to optimize mock infrastructure for Playwright.

Yes. This Skill provides AI Gateway mocking patterns and a setupGeminiMock helper to efficiently simulate Gemini API responses within Playwright E2E tests without external API calls.

Fixture management consolidates scattered test data into a single source of truth, ensuring consistency across tests. This Skill implements patterns to organize and reuse test data fixtures alongside MSW handlers.

Handler caching applies when mock setup overhead exceeds 500ms per test or test data are scattered across multiple files. Reusing cached routes eliminates redundant handler initialization on every test run.

Raw MSW handlers require per-test setup; fixture management centralizes test data and handler configuration for reuse. This Skill combines both to reduce boilerplate and improve test consistency.