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# Rector Rules for PHPUnit
See available [PHPUnit rules](/docs/rector_rules_overview.md)
## Install
This package is already part of [rector/rector](http://github.com/rectorphp/rector) package, so it works out of the box.
All you need to do is install the main package, and you're good to go:
```bash
composer require rector/rector --dev
```
## Use Sets
To add a set to your config, use `Rector\PHPUnit\Set\PHPUnitSetList` class and pick one of constants:
```php
use Rector\PHPUnit\Set\PHPUnitSetList;
use Rector\Config\RectorConfig;
return static function (RectorConfig $rectorConfig): void {
$rectorConfig->sets([
PHPUnitSetList::PHPUNIT_90,
]);
};
```
<br>
## Learn Rector Faster
Rector is a tool that [we develop](https://getrector.org/) and share for free, so anyone can save hundreds of hours on refactoring. But not everyone has time to understand Rector and AST complexity. You have 2 ways to speed this process up:
* read a book - <a href="https://leanpub.com/rector-the-power-of-automated-refactoring">The Power of Automated Refactoring</a>
* hire our experienced team to <a href="https://getrector.org/contact">improve your code base</a>
Both ways support us to and improve Rector in sustainable way by learning from practical projects.
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