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bun.sh/docs/guides/test/watch-mode.mdx
2025-11-21 14:06:19 -08:00

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---
title: Run tests in watch mode with Bun
sidebarTitle: Watch mode
mode: center
---
Use the `--watch` flag to run your tests in watch mode.
```sh terminal icon="terminal"
bun test --watch
```
---
This will restart the running Bun process whenever a file change is detected. It's fast. In this example, the editor is configured to save the file on every keystroke.
<Frame>
![Running tests in watch mode in
Bun](https://github.com/oven-sh/bun/assets/3084745/dc49a36e-ba82-416f-b960-1c883a924248)
</Frame>
---
See [Docs > Test Runner](/test) for complete documentation on the test runner.