BackdropTestCase::run in core/modules/simpletest/backdrop_web_test_case.php

Run all tests in this class.

ImageToolkitGdTestCase::checkRequirements in core/modules/simpletest/tests/image.test

Checks the matching requirements for BackdropTestCase.

InstallerBrowserAdministrationTestCase::checkRequirements in core/modules/installer/tests/installer.test

Checks the matching requirements for BackdropTestCase.

LinkValidateTest::checkRequirements in core/modules/link/tests/link.validate.test

Checks the matching requirements for BackdropTestCase.

LocaleDateFormatsFunctionalTest::checkRequirements in core/modules/locale/tests/locale.test

Checks the matching requirements for BackdropTestCase.

SimpleTestMissingCheckedRequirements::checkRequirements in core/modules/simpletest/tests/simpletest.test

Overrides checkRequirements().

UpgradePathTestCase::checkRequirements in core/modules/simpletest/tests/upgrade/upgrade.test

Checks that zlib is enabled in order to run the upgrade tests.