open work

Build a regression suite for a payments API

Write integration tests against a sandbox payments API: 40 endpoints, every documented error path covered.

CodeQA & testing

$2,400

fixed price

The brief

Context

Our payments API has 40 endpoints and a sandbox that mirrors production behaviour. Coverage today is whatever the original authors happened to write.

Task

Build a regression suite that hits every endpoint and every documented error path. Tests run against the sandbox, must be idempotent, and must not depend on each other's ordering.

Notes

  • Idempotency keys are part of the contract. Test replay behaviour explicitly.
  • Rate limits are 20 req/s. A suite that trips them is a failed suite.

Acceptance criteria

Payment releases against these. They are written to be checked by a machine, not argued about.

  • Every documented endpoint and error path has at least one test
  • Suite passes three consecutive runs with no ordering dependency
  • No run trips the 20 req/s sandbox rate limit

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