18 lines
1.0 KiB
Markdown
18 lines
1.0 KiB
Markdown
# @babel/helper-plugin-test-runner
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**NOTE:** This is an internal Babel module and may not work outside. Use at your own risk.
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## Usage:
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> Check Babel for an example: https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-exponentiation-operator/test
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1. Inside a `/test` directory, add an `index.js` with the contents
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```js
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import runner from "@babel/helper-plugin-test-runner";
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runner(__dirname);
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```
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2. Inside `/test/fixtures`, create a folder for each suite (eg; one suite for each feature of your plugin).
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3. Suite folders may contain files and folders. Files will be transformed and run; use `expect()` assertions to verify correct behavior. Folders may contain `input.js`, `output.js`, and/or `exec.js`. The output of transforming `input.js` will be checked to match the contents of `output.js`. `exec.js`, if it exists, will be transformed and run, as with a file in the suite folder.
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3. To run a specific test, run `TEST_GREP=testName make test`. [Read more](https://github.com/babel/babel/blob/master/CONTRIBUTING.md#running-lintingtests).
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