[Laravel][Resolved] Call to undefined method PHPUnit_Util_Configuration::getTestdoxFroupConfigturation() in ..

2 things can do, 
firstly, update your composer by this command first:

composer update

And then use your phpunit command to check it work or not , if still fail, use another command to run your unit test:

YOUR_PROHECT_DIRECTORY\vendor\bin\phpunit

Change text YOUR_PROHECT_DIRECTORY in red to your directory path, for my case the project is named demo :

C:\xampp\htdocs\demo\vendor\bin\phpunit

Reference

https://stackoverflow.com/questions/41868027/phpunit-uncaught-error-call-to-undefined-method-phpunit-util-configurationget