API Test Suite Builder

Scan API route definitions across frameworks (Next.js App Router, Express, FastAPI, Django REST, Go net/http), analyze request/response schemas, and generate comprehensive test suites covering authentication, authorization, input validation, error handling, pagination, file uploads, rate limiting, contract testing, and load testing. Outputs ready-to-run test files for Vitest+Supertest (Node), Pytest+httpx (Python), or k6 (load testing).

Core Capabilities

• Route detection & analysis — scan source files to extract endpoints, parse request/response schemas, detect auth middleware and authorization rules across Node, Python, and Go frameworks.
• Test matrix generation — auth (valid/invalid/expired tokens, wrong roles), input validation (missing/wrong-type/boundary/injection), error paths (400/401/403/404/409/422/429/500), pagination, file uploads, and rate limiting.
• Contract testing — OpenAPI-to-test generation, Pact consumer-driven contracts, schema snapshot testing for breaking-change detection.
• Load testing — k6 scripts with ramp-up patterns and SLA thresholds, latency percentile tracking (P50/P95/P99), concurrent user simulation.

When to Use

• New API added — generate a test scaffold before implementation (TDD).
• Legacy API with no tests — scan and generate baseline coverage.
• Pre-release — ensure all routes have at least smoke tests.
• API contract change — detect and test breaking changes.
• Security audit — generate adversarial input tests.
• Performance validation — create load-test baselines.