Blog, page 5

Screenshot, UI, API and performance tests compared: what each checks, when to add it, and example tools for each.

Stop UI tests breaking on CSS changes: data-testid attributes, a selector strategy that starts with roles, and how to get developers to help.

Smoke, sanity and regression testing compared in one table: purpose, scope, timing and automation, plus how to place each in a CI/CD pipeline.

Set up end-to-end tests with Playwright and Jest: install, config, a real first test, and when to use @playwright/test instead. Updated for current tooling.

Do you need manual testing first? Which language and framework to pick, what to automate first and where to learn, from my own start in test automation.

The three mistakes I see when interviewing QA candidates: language basics, team fit, and handling unknown problems.