Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /var/www/html/lib/php-saml.rayane/tests/src/OneLogin/Saml/XmlSecTest.php:3 Stack trace: #0 {main} thrown in /var/www/html/lib/php-saml.rayane/tests/src/OneLogin/Saml/XmlSecTest.php on line 3