Testing & mock data

Bindings that connect Mock Service Worker to Playwright.

Good for

Controlling network responses during browser-level application tests.

Tools for modeling and querying data in tests.

Good for

Building a stateful mocked backend for application test scenarios.

An open-source visual testing platform.

Good for

Detecting interface changes by comparing screenshots in development workflows.

A helper for ensuring generated values remain unique.

Good for

Avoiding duplicate fixture values while creating test data.

A library that generates realistic-looking fake data.

Good for

Creating sample users, records, and large development datasets.

A library for generating fake application data.

Good for

Creating typed fixtures such as names, addresses, and product details.

A tool that exposes a JSON file through a mock REST API.

Good for

Prototyping a frontend before its real backend is available.

A vision-based browser automation framework using natural-language instructions.

Good for

Automating and testing browser workflows through an AI-controlled agent.

Keep in mind

This entry covers the original browser agent. The Magnitude domain now describes a different inference product.

A generator for Mock Service Worker handlers from API descriptions.

Good for

Bootstrapping mocked API responses for frontend development.

A framework for automating and testing web browsers.

Good for

Verifying real user workflows across supported browser engines.

Authentication helpers for organizing Playwright tests around personas.

Good for

Testing workflows as users with different accounts and permissions.

A testing tool focused on application and CI workflows.

Good for

Exploring automated checks for user-facing application behavior.

Tools for generating realistic data from database schemas.

Good for

Populating development and test databases with representative fixtures.

A generator for mock values derived from Zod schemas.

Good for

Creating fixtures that follow an existing validation schema.