We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Vitest: testing DX reimagined, Vladimir, ViteConf 2022
Discover the power of Vitest, a test runner that reimagines testing DX for VITE applications, with features like in-source testing, module graph, and UI for testing and debugging.
- Vitest is a test runner that provides an alternative to Jest for VITE applications, with support for ESM, TypeScript, and JSX out of the box.
- Vitest provides a compatible API for easier migration from Jest.
- It has a feature called in-source testing, which allows writing tests inside source code.
- Vitest has a module graph that detects dependencies and only runs tests that are affected by changes.
- It has a watch mode that runs tests automatically when files change.
- Vitest provides a UI for testing and debugging, including a feature to view test results and error reports.
- It has a concept of contexts, which allows tests to share a common setup and teardown.
- Vitest provides support for snapshot testing, including a snapshot matcher API.
-
It also provides support for benchmarking, including an experimental feature called
tinybench. -
Vitest has a package called
VITest browserfor previewing code in the browser. - It provides a way to edit tests directly in the browser.
- Vitest is designed to be faster and more efficient than other test runners, with features like instant watch mode and concurrent testing.
- It provides a way to specify which tests to run, including options for filtering by file or directory.
- Vitest has a community and documentation, and is developed as an alternative to Jest for VITE applications.
- It provides support for front-end frameworks like Vue, React, and Svelte, and can be used for testing and debugging these frameworks.
-
Vitest has a feature called
test-changedthat runs only the affected tests when files change. -
It has a feature called
benchmarkingthat allows testing and comparing the performance of code. - Vitest provides support for TypeScript and JavaScript, and can be used with a variety of testing libraries and frameworks.