BareUpgradePathTestCase::setUp in core/modules/simpletest/tests/upgrade/upgrade_bare.test

Overrides BackdropWebTestCase::setUp() for upgrade testing.

FilledUpgradePathTestCase::setUp in core/modules/simpletest/tests/upgrade/upgrade_filled.test

Overrides BackdropWebTestCase::setUp() for upgrade testing.

LanguageUpgradePathTestCase::setUp in core/modules/simpletest/tests/upgrade/upgrade.language.test

Overrides BackdropWebTestCase::setUp() for upgrade testing.

LayoutUpgradePathTest::setUp in core/modules/layout/tests/layout.test

Set up environment.