TODO.md

Integration Test for /api/proxy (mounted at /v1/call/:apiSlugOrId/*)

Steps

• 1. Analyze codebase structure and proxy route implementation
• 2. Plan test approach (approved)
• 3. Create TODO.md tracking file
• 4. Create tests/integration/proxy.test.ts with:
  • Mock implementations for BillingService, RateLimiter, UsageStore
  • testcontainers httpd:alpine upstream setup
  • Test: GET proxy success - forwards upstream response
  • Test: Missing x-api-key returns 401
  • Test: Invalid API key returns 401
  • Test: Unknown API slug returns 404
  • Test: Rate limited returns 429
  • Test: Insufficient balance returns 402
  • Test: POST with idempotency header
  • Test: Upstream timeout returns 504
  • Test: Circuit breaker opens on repeated failures
• 5. Run tests and fix any issues
• 6. Verify test coverage meets 90% on changed lines