Here I wrote a quick example test and I removed that junk from the run script. Please make sure your phpunit.bat
looks like the one on this page.
Then, you should be able to run it with the command:
\php\phpunit\phpunit.bat name_of_test_file.php
For more information, here's a link to much better documentation than I could provide: https://phpunit.de/manual/current/en/writing-tests-for-phpunit.html
Good luck and sorry about the bad info!