15 files declare their use of FarmBrowserTestBase in farmOS 2.x

AssetTestBase.php in modules/core/asset/tests/src/Functional/AssetTestBase.php

CorsResponseEventSubscriberTest.php in modules/core/api/tests/src/Functional/CorsResponseEventSubscriberTest.php

DashboardTasksTest.php in modules/core/ui/views/tests/src/Functional/DashboardTasksTest.php

DashboardTest.php in modules/core/ui/dashboard/tests/src/Functional/DashboardTest.php

EntryPointTest.php in modules/core/api/tests/src/Functional/EntryPointTest.php

EquipmentFieldTest.php in modules/asset/equipment/tests/src/Functional/EquipmentFieldTest.php

FarmBlockTest.php in modules/core/ui/theme/tests/src/Functional/FarmBlockTest.php

FarmEntityBundleFieldTest.php in modules/core/entity/tests/src/Functional/FarmEntityBundleFieldTest.php

InstallTest.php in modules/core/api/tests/src/Functional/InstallTest.php

InventoryTest.php in modules/core/inventory/tests/src/Functional/InventoryTest.php

LocationAPITest.php in modules/core/location/tests/src/Functional/LocationAPITest.php

PlanTestBase.php in modules/core/plan/tests/src/Functional/PlanTestBase.php

QuickFormTest.php in modules/core/quick/tests/src/Functional/QuickFormTest.php

SensorDataApiTest.php in modules/asset/sensor/tests/src/Functional/SensorDataApiTest.php

UserLoginTest.php in modules/core/login/tests/src/Functional/UserLoginTest.php