Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/rykfgln/www/4.ta.a/tests/Atom/HttpFundation/HeaderTest.php:13 Stack trace: #0 {main} thrown in /home/rykfgln/www/4.ta.a/tests/Atom/HttpFundation/HeaderTest.php on line 13