In the future, ApplicationSystemTestCase should inherit from
ActionDispatch::SystemTestCase and JavaScriptApplicationSystemTestCase
could possibly be removed if the `driven_by` method works as it is
promised in Rails documentation:
http://api.rubyonrails.org/v5.2/classes/ActionDispatch/SystemTestCase.html
Consider introducing another class between
ActionDispatch::IntegrationTest and other items inheriting from it, as
the general Rails practice seems to have `ApplicationIntegrationTest`,
as we do have `ApplicationRecord` and `ApplicationController`.
