Redirect_to problem

redirect_problem.rb

// LockerController 

def make_payment
   @locker = Locker.find(params[:id])
  
   respond_to do |format|
   
     if !@locker || @locker.user
       format.html { redirect_to user_lockers_url, notice: "Opps, something went wrong, please try again" }
     else
       reply = Nestful.post PXPAYURL, :format => :xml, :body => generate_request_xml(@locker).target!
       if reply['valid'].to_i == 1
         format.html { redirect_to reply['URI'] }
       else 
         raise reply.inspect
       end
     end
   end
 end


// And the integration test

describe 'GET make_payment' do
  it 'should be able to redirect to the DPS hosted site' do
    locker = Locker.make!
    visit user_make_payment_url(locker.id)
    
    page.should have_button('Purchase a New Locker')
  end
end

     Failure/Error: click_link('YES')
     ActionController::RoutingError:
       No route matches [GET] "/pxpay/pxpay.aspx"
     # (eval):2:in `click_link'
     # ./spec/requests/user/user_lockers_spec.rb:89:in `block (3 levels) in <top (required)>'