included (ActiveSupport::Testing::SetupAndTeardown)

    # File lib/active_support/testing/setup_and_teardown.rb, line 6
          def self.included(base)
            base.class_eval do
              include ActiveSupport::Callbacks
              define_callbacks :setup, :teardown

              if defined?(MiniTest::Assertions) && TestCase < MiniTest::Assertions
                include ForMiniTest
              else
                include ForClassicTestUnit
              end
            end
          end