When arc unit runs after a change to src/Reflection/CodeFile.php, the tests are marked as broken.
If the tests are run without using phpunit.xml, the following error indeed occurs:
Fatal error: Trait 'Keruald\OmniTools\Tests\WithData' not found in /usr/home/dereckson/dev/keruald/omnitools/tests/Reflection/CodeFileTest.php on line 14