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#contract-testing

2 stories

Banner: layers of API tests from contract checks to load and security probes around an API endpoint

Testing & QA

API testing types explained: contract, integration, load and security tests compared

John Nguyen · Aug 13, 2026 · 8 min read

Our API had 1,400 tests and still shipped a breaking field rename, a 40-second p99 under load and an object-level authorization hole. Each one belonged to a test type we were not running. This is the map we now use: which API test type catches which failure, with a small example of each.

Testing & QA

A practical testing strategy for small teams with no time to test everything

Daniel Tran · Jul 14, 2026 · 8 min read

Four engineers, one invoicing product, no QA team. This is the risk-based testing strategy we settled on: integration tests over mocks, contract tests at service edges, a handful of E2E happy paths and test data that does not rot.