Fix module variable handling

Use correct mock and test case class of phpunit 9

Add missing type in docblock for loadConfigFile

Add missing type in docblock

Update phpunit.xml exampe

Update to be compatible with n98-magerun2 v4.8.0

Fix composer.json validation error

[TASK] Add additional documentation

[FEATURE] Add support to test multiple generated files

[TASK] Add documentation

[TASK] Changed order in asser (swap expectation and buffer)

[BUGFIX] Removed hardcoded path in mock helper

[FEATURE] Add support for test yaml config loading

Add missing dependency

Remove wrong dependency