Prerequisites This needs to be tested on 4.1 and 4.3 running PHP 8.0 Testing Edit lib/tests/behat_lib_test.php and add the following test to the class: public function test_stop_without_driver() { $driver = new WebDriver(); $driver->stop(); // Any dummy assertion will do. The test is that it makes it here without crashing. $this->assertEquals(1,1); } Init PHPUnit : php admin/tool/phpunit/cli/init.php Run the test_stop_without_driver unit test: vendor/bin/phpunit --filter="test_stop_without_driver" Verify that it doesn't thrown a ReflectionException : 1) behat_lib_test::test_stop_without_driver ReflectionException: Cannot access non-public property OAndreyev\Mink\Driver\WebDriver::$webDriver Please note : During the test run you'll see a "Could not connect to a Selenium 2 / WebDriver server" , that's unrelated and can be ignored.

Code verified against automated checks. Checked MDL-84498 using repository: https://github.com/jaypha/moodle MOODLE_401_STABLE (0 errors / 0 warnings) [branch: 84498-41-regression-fix | CI Job ] MOODLE_403_STABLE (0 errors / 0 warnings) [branch: 84498-43-regression-fix | CI Job ] More information about this report Built on: Wed Feb 12 10:27:13 PM UTC 2025