class ActionView::TestCase

in the guides.
Read more about ActionView::TestCase in {Testing Rails Applications}[https://guides.rubyonrails.org/testing.html#testing-view-partials]

= Action View Test Case

Namespace

ActionView

Classes in this namespace

ActionView::TestCase::TestController

Parent class

ActionView::ActiveSupport::TestCase

Included Modules

ActionView::TestCase::Behavior

Defined in

lib/action_view/test_case.rb