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Vitest integration
For most users, Cloudflare recommends using the Workers Vitest integration for unit testing Workers and Pages Functions projects. Vitest is a popular JavaScript testing framework featuring a very fast watch mode, Jest compatibility, and out-of-the-box support for TypeScript. In this integration, Cloudflare provides a custom pool that allows your Vitest tests to run inside the Workers runtime.
The Workers Vitest integration:
- Supports both unit tests and integration tests.
- Provides direct access to Workers runtime APIs and bindings.
- Implements isolated per-test-file storage.
- Runs tests fully-locally using Miniflare .
- Leverages Vitest's hot-module reloading for near instant reruns.
- Supports projects with multiple Workers.
Write your first test
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