Guides

How to Perform API Testing: A Step-by-Step Guide

OptraFlow Team··8 min read

This guide walks through testing an API end-to-end, from your first request to a suite running automatically in CI.

  1. 1

    Bring in your requests

    Start from an OpenAPI/Swagger spec, a Postman collection, a cURL command, or build requests manually. See the Request Builder overview for all four import paths.

    Request Builder
  2. 2

    Add assertions

    Check status codes, response timing, and specific fields in the payload — not just "did it return 200".

    Assertions
  3. 3

    Chain related requests

    Test real flows — sign up, log in, create a resource, verify it — by chaining requests and passing values between steps.

    Request Chaining
  4. 4

    Check the edges, not just the happy path

    Add boundary and negative cases: invalid input, missing auth, rate limits. See the boundary testing guide for a checklist.

    Boundary Testing for APIs
  5. 5

    Run it in CI

    Wire your suite into your pipeline so every pull request runs it automatically, not just your local machine.

    Run Testing from CI/CD

Placeholder content

This is dummy copy scaffolded for the migration — expand each step with real screenshots and examples before publishing.