55 articles
Building and scaling test automation frameworks — architecture patterns, AI-driven generation, and the practices that keep suites maintainable as they grow.
What API functional testing covers, how it differs from non-functional testing, the test design techniques that find real bugs (equivalence partitioning, boundary values, state transitions), a worked example suite and how to automate it in CI.
How to load test an API properly: load, stress, spike and soak tests, the metrics that matter (p95, p99, throughput, error rate), open vs closed workload models, SLOs, a worked k6 and JMeter example, CI gating and the mistakes that make results meaningless.
A ready-to-use pack of 40 login API test cases (positive, negative, validation, security-behaviour and session cases) with inputs, expected status codes and results, a pytest automation snippet and a downloadable CSV.
A ready-to-use pack of 36 API pagination test cases for offset/limit, page/size, cursor and keyset pagination: boundaries, ordering stability, concurrent inserts, total counts and RFC 8288 Link headers, with pytest code and a free CSV.
A hands-on guide to API testing in C# on .NET 8: HttpClient with xUnit and NUnit, RestSharp, FluentAssertions, JSON schema checks, in-process tests with WebApplicationFactory, and running the suite in CI with dotnet test.
22 concrete API testing examples grouped by type: functional, negative, auth, schema, pagination, rate limit, idempotency, performance smoke and security basics. Each has the request, the expected result and an assertion in REST Assured, pytest or a Postman test script.
A practical guide to API testing with JavaScript: Jest and Supertest for Node.js services, Playwright's request API for external APIs, JSON Schema validation with Ajv, and a CI workflow, all with runnable code.
What JSON Schema validation is and how it works: the 2020-12 draft and its core rules, then runnable examples validating API responses in Python (jsonschema), JavaScript (Ajv), Java (networknt, REST Assured) and Postman, how it aligns with OpenAPI 3.1, and the errors you will hit.
A practical guide to OpenAPI and Swagger API testing: how spec-driven testing works, the six kinds of tests a spec makes possible, a worked pytest and Schemathesis example against the public Petstore API, CI wiring, tools, common mistakes and a checklist.
