Before the patch Run this command in the root of moodle directory: find . -name "*_test.php" | xargs grep -Pc "^ *class .*test(case)? " | grep -v :1 Verify that it returns these 4 results: ./admin/tool/httpsreplace/tests/httpsreplace_test.php:2 ./files/tests/converter_test.php:4 ./grade/tests/reportlib_test.php:2 ./lib/tests/portfoliolib_test.php:2 After the patch Prepare phpunit. Run: php admin/tool/phpunit/cli/init.php Run the following unit tests and check the results: vendor/bin/phpunit admin/tool/httpsreplace/tests/httpsreplace_test.php Verify that you get: OK (26 tests, 57 assertions) vendor/bin/phpunit files/tests/converter_test.php Verify that you get: OK (27 tests, 34 assertions) vendor/bin/phpunit grade/tests/reportlib_test.php Verify that you get: OK (1 test, 6 assertions) vendor/bin/phpunit lib/tests/portfoliolib_test.php Verify that you get: OK (1 test, 13 assertions) Run this command in the root of moodle directory: find . -name "*_test.php" | xargs grep -Pc "^ *class .*test(case)? " | grep -v :1 Verify that it returns no results now (was returning them before the patch).