Summary

Tests using the createMock() method run flawlessly with phpunit installed as a composer package.
They do not run when using the PHAR.

Current behavior

Each test using createMock() outputs assert(class_exists(PropertyHookType::class)) - which looks a lot like an AssertionError.

How to reproduce

Run a test-suite using createMock() with the PHAR version of phpunit.

Expected behavior

Tests should run as expected. No assertion fails.