PHPUnit - 'No tests executed' when using configuration file

Question

The Problem

To improve my quality of code, I\'ve decided to try to learn how to test my code using Unit Testing instead of my mediocre-at-best testing solutions.

Answer 1

I had the same problem after PHPUnit on our virtual machines updated to version 6. Even --debug and --verbose said nothing useful, just "No tests executed". In the end it turned out that classes and namespaces were changed in the new version and it just didn't want to execute the files that contained references to old classes. The fix for me was just to replace in every test case this:

class MyTestCase extends \PHPUnit_Framework_TestCase {...}

with:

use PHPUnit\Framework\TestCase;

class MyTestCase extends TestCase {...}