Ruby on Rails 5.1.7
Module
ActionDispatch::SystemTesting
actionpack/lib/action_dispatch/system_testing/driver.rb
actionpack/lib/action_dispatch/system_testing/server.rb
actionpack/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb
actionpack/lib/action_dispatch/system_testing/test_helpers/setup_and_teardown.rb
Namespace
MODULE
ActionDispatch::SystemTesting::TestHelpers