Articles
Practical guides on QA automation, testing tools, and engineering career.
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API Testing
API Testing with Playwright: Beyond the UI
API tests are faster, more stable, and catch bugs the UI never shows. Learn how to write them directly in Playwright without any extra tools.
11 min read
API Testing
API Testing with Playwright's APIRequestContext (No Postman Required)
You already have Playwright installed — here's how to use its built-in HTTP client to test APIs, seed test data, and ditch Postman for good.
14 min read
API Testing
API Testing 101: What Every QA Engineer Needs to Know in 2026
API testing shouldn't be a fallback for when the UI breaks — it should be the first line of defense for every backend feature you ship.
10 min read
API Testing
Database Testing for QA Engineers: SQL Queries Every Tester Should Know
The UI says "Order placed" — SQL tells you whether the record actually landed in the database.
12 min read
API Testing
Performance Testing with k6: The QA Engineer's First Load Test
Your Playwright tests pass — but do they pass with 500 users hitting the API at once? Learn k6 from first script to CI-integrated load test with thresholds that actually fail your build.
14 min read
API Testing
Authentication in API Tests: API Keys, Bearer Tokens, OAuth2, JWT
Most auth bugs live in the gaps — the endpoint that returns 200 when it should 401, the admin route that accepts a regular user's token. Learn to test all of it.
14 min read
API Testing
Contract Testing with Pact: Stop Breaking APIs Between Teams
Frontend and backend both pass their own tests — but the API contract between them breaks in staging every other sprint. Contract testing with Pact closes that gap.
13 min read
API Testing
GraphQL API Testing with Playwright: Queries, Mutations, and Error Handling
GraphQL always returns 200 — even for errors. Here's how to test GraphQL APIs with Playwright, handle the error model correctly, and build reusable query fixtures.
12 min read
API Testing
Migrating API Tests from Postman to Playwright
Postman collections don't run in CI without a paid plan. Playwright's request fixture does the same job, lives in your repo, and runs anywhere. Here's the migration playbook.
12 min read
API Testing
What Is a REST API? A Practical Guide for QA Engineers
Every modern app you test communicates with a backend through APIs. Understand HTTP requests, status codes, authentication, and how to inspect API calls — without building one yourself.
12 min read
API Testing
HTTP Status Codes Every QA Engineer Needs to Know
You're watching the Network tab. A request returns 422. Is that expected? A bug? Should you file a ticket? Every QA engineer who works with APIs needs to know the status codes that actually matter.
11 min read
API Testing
Postman for QA Engineers: From First Request to API Test Suite
Postman is where most QA engineers start with API testing. You don't need to write code to send requests, inspect responses, and verify your backend works correctly.
12 min read
API Testing
Advanced API Testing with Playwright: Patterns for Real Projects
You know the basics of Playwright API testing. This guide goes further — authentication flows, test isolation, response schema validation, CRUD lifecycle testing, and pagination patterns that hold up in production.
13 min read