Refactor routing test for new_sign_up_path
Write failing route test to create or update sign ups

-----FAILING TEST------

Failures:

  1) Route create_or_update_sign_up_path routes to SignUpsController#create_or_update
     Failure/Error: expect(put: "/sign_ups/:id/create_or_update").to route_to(
       No route matches "/sign_ups/:id/create_or_update"
Green:  Route test to create or update sign ups
Refactor folder and file names for route tests