UserLoginTestCase::testGlobalLoginFloodControl in core/modules/user/tests/user.test

Test the global login flood control.

UserLoginTestCase::testLoginMethods in core/modules/user/tests/user.test

Test that login credentials work (or not) in different login modes.

UserLoginTestCase::testPerUserLoginFloodControl in core/modules/user/tests/user.test

Test the per-user login flood control.