confusing user variable, visit vs. put

authentication_pages_spec.rb

  describe 'authorization' do
    let(:user) { FactoryGirl.create(:user) }

    describe 'for non-signed-in users' do

      describe 'in the Users controller' do

        # describe 'visiting the edit page' do
        #   before { visit edit_user_path(user) }
        #   it { expect(page).to have_title(full_title('Sign in')) }
        #   it { expect(page).to have_selector('div.alert.alert-notice') }
        # end

        describe 'submitting to the update action' do
          before { put user_path(user) }
          it { expect(response).to redirect_to(login_path) }
        end

      end
    end
  end

output.txt

$ rspec spec/features/authentication_pages_spec.rb 
No DRb server is running. Running in local process instead ...
F.............

Failures:

  1) Authentication authorization for non-signed-in users in the Users controller submitting to the update action 
     Failure/Error: before { put user_path(user) }
     ActionController::ParameterMissing:
       param is missing or the value is empty: user
     # ./app/controllers/users_controller.rb:46:in `user_params'
     # ./app/controllers/users_controller.rb:29:in `update'
     # ./spec/features/authentication_pages_spec.rb:64:in `block (6 levels) in <top (required)>'

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14 examples, 1 failure