ruby - Rails test can't find route when it clearly exists? -

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okay, tired, , new rails possibly missing super basic. anyways, started new project , implementing controller static pages. wrote unit tests make sure routes correct (there 4 far). 3 of them pass fourth gives me error message: 

  1) error: staticpagescontrollertest#test_terms_of_service_should_return_success: actioncontroller::urlgenerationerror: no route matches {:action=>"terms", :controller=>"static_pages "}     test/controllers/static_pages_controller_test.rb:18:in `block in <class:staticpagescontrollertes t>'

its saying can't find route. however, when rake routes exists: 

   /about(.:format)   static_pages#about contact  /contact(.:format) static_pages#contact privacy  /privacy(.:format) static_pages#privacy   terms  /terms(.:format)   static_pages#terms_of_service

here part of routes.rb:

  'about' => 'static_pages#about'   'contact' => 'static_pages#contact'   'privacy' => 'static_pages#privacy'   'terms' => 'static_pages#terms_of_service'

and here code test failing:

 test "terms_of_service should return success"     'terms'     assert_response :success     assert_select 'title', "terms of service"  end

i can visit localhost:3000/terms directly in browser , works. idea going on here?

controller tests don't test routes, test actions. want:

get 'terms_of_service'

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