to ensure that session requirements in setup are persisted in the tests

Methods
T
Instance Public methods
test_cookies_set_in_setup_are_persisted_through_the_session()

Source: show | on GitHub 

# File actionpack/test/controller/integration_test.rb, line 1133
def test_cookies_set_in_setup_are_persisted_through_the_session
  get "/foo"
  assert_equal({"user_name"=>"david"}, cookies.to_hash)
end