The PHPUnit 8 Shift reviews your tests for any backward incompatible changes and automate the upgrade process to PHPUnit 8.
- Running PHP 7.2 or higher.
- Previously running PHPUnit 6 or higher.
- Test class within the
- Adding return types to core
phpunit/phpunitcomposer dependency to
- Modernizing PHP syntax, such as the short array syntax.
While the PHPUnit 8 Shift addresses backward incompatible changes, there are also [deprecations](https://phpunit.de/announcements/phpunit-8.html) you may wish to review manually.