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28 lines
858 B
Markdown
28 lines
858 B
Markdown
# Configure Jest To Run A Test Setup File
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Jest can be configured to run a setup file before each test. This is useful
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for configuring your testing framework in a single place, rather than in
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each test file.
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This setup file can be specified in `package.json` (or `jest.config.js`).
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```javascript
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// package.json
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{
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// ...
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"jest": {
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"setupTestFrameworkScriptFile": "<rootDir>src/setupTests.js"
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}
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}
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```
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The
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[`setupTestFrameworkScriptFile`](https://facebook.github.io/jest/docs/en/configuration.html#setuptestframeworkscriptfile-string)
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points to a test setup file at the specified location rooted at `<rootDir>`
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(the root of your project).
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This kind of setup is helpful for something like
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[Enzyme](https://github.com/airbnb/enzyme/blob/master/docs/guides/jest.md)
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that needs to be configured with a specific adapter for use throughout your
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tests.
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