BackdropWebTestCase::setUp in core/modules/simpletest/backdrop_web_test_case.php

Sets up a Backdrop site for running functional and integration tests.

BackdropWebTestCaseCache::setUp in core/modules/simpletest/backdrop_web_test_case_cache.php

Sets up a Backdrop site to be used as a cached installation profile.

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

Overrides BackdropWebTestCase::setUp() for upgrade testing.