TESTING
PRECISION SUITE MMXXV • 5 POSTS
How to Mock an API Before the Backend Exists
Build a frontend before its backend is ready by agreeing on an API contract, creating controlled responses, testing difficult states, and planning the real-service handoff.
What Is Visual Regression Testing? Screenshots, Baselines, and Diffs
Learn how visual regression testing compares screenshots, how to stabilize baselines, and how to review visual changes without hiding real interface defects.
What Is a Mock Server? How Simulated APIs Work
Learn how mock servers match requests and return simulated responses, when to use them, and which backend behaviors they cannot verify.
Contract Testing vs Integration Testing: Differences and Examples
Compare contract testing and integration testing through an order API, including consumer expectations, provider verification, database behavior, and deployment confidence.
What Is Playwright? Browser Testing Explained With an Example
Learn what Playwright is, how browser tests use locators and auto-waiting, and how isolation, network mocking, and traces help verify web application behavior.