route starting with /test/ crashes testsuites

[RoelandMatthijssens]

Steps to reproduce*

#!/bin/bash
set -euo pipefail
shopt -s inherit_errexit

rails new bug_poc
cd bug_poc
echo "gem 'route_translator'" >> Gemfile
bundler
rails g controller example poc
rails db:migrate
rails test  # Tests run fine here
sed -i '4i\
  get "test", to: "example#poc"\
  localized do\
    get "example/poc"\
  end' config/routes.rb
rails test # Tests will break now

changing the route to

  get "testing", to: "example#poc"\  #Or anything else than `test`

causes the test to succeed again

Expected behavior*

I expect the two test runs to be identical (the localization of the existing route is not tested)

...
Finished in 2.162236s, 0.4625 runs/s, 0.4625 assertions/s.
1 runs, 1 assertions, 0 failures, 0 errors, 0 skips
...
Finished in 2.162236s, 0.4625 runs/s, 0.4625 assertions/s.
1 runs, 1 assertions, 0 failures, 0 errors, 0 skips
...

Actual behavior*

The second test run fails when a route is defined starting with test

...
Finished in 2.162236s, 0.4625 runs/s, 0.4625 assertions/s.
1 runs, 1 assertions, 0 failures, 0 errors, 0 skips
...
Finished in 0.122703s, 57.0481 runs/s, 8.1497 assertions/s.
7 runs, 1 assertions, 0 failures, 4 errors, 0 skips
...

System configuration*

Rails version:
Rails 6.0.3.2
Ruby version:
ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [x86_64-linux]
Route Translator version:
route_translator (8.0.0)

I18n configuration*

# Replace this comment with your I18n configuration
# taken from config/application.rb

Route Translator initializier

Source of: config/initializers/route_translator.rb
N/A

Source code of routes.rb*

Source of: config/routes.rb

Rails.application.routes.draw do
  get 'example/poc'
  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
  get "test", to: "example#poc"
  localized do
    get "example/poc"
  end
end

Locale .yml files*

Source of config/locales/xx.yml
N/A

Source of config/locales/yy.yml
N/A

Output of rails routes*

Result of bundle exec rails routes:

                               Prefix Verb   URI Pattern                                                                              Controller#Action
                          example_poc GET    /example/poc(.:format)                                                                   example#poc
                                 test GET    /test(.:format)                                                                          example#poc
                                      GET    /example/poc(.:format)                                                                   example#poc {:locale=>"en"}
        rails_postmark_inbound_emails POST   /rails/action_mailbox/postmark/inbound_emails(.:format)                                  action_mailbox/ingresses/postmark/inbound_emails#create
           rails_relay_inbound_emails POST   /rails/action_mailbox/relay/inbound_emails(.:format)                                     action_mailbox/ingresses/relay/inbound_emails#create
        rails_sendgrid_inbound_emails POST   /rails/action_mailbox/sendgrid/inbound_emails(.:format)                                  action_mailbox/ingresses/sendgrid/inbound_emails#create
  rails_mandrill_inbound_health_check GET    /rails/action_mailbox/mandrill/inbound_emails(.:format)                                  action_mailbox/ingresses/mandrill/inbound_emails#health_check
        rails_mandrill_inbound_emails POST   /rails/action_mailbox/mandrill/inbound_emails(.:format)                                  action_mailbox/ingresses/mandrill/inbound_emails#create
         rails_mailgun_inbound_emails POST   /rails/action_mailbox/mailgun/inbound_emails/mime(.:format)                              action_mailbox/ingresses/mailgun/inbound_emails#create
       rails_conductor_inbound_emails GET    /rails/conductor/action_mailbox/inbound_emails(.:format)                                 rails/conductor/action_mailbox/inbound_emails#index
                                      POST   /rails/conductor/action_mailbox/inbound_emails(.:format)                                 rails/conductor/action_mailbox/inbound_emails#create
    new_rails_conductor_inbound_email GET    /rails/conductor/action_mailbox/inbound_emails/new(.:format)                             rails/conductor/action_mailbox/inbound_emails#new
   edit_rails_conductor_inbound_email GET    /rails/conductor/action_mailbox/inbound_emails/:id/edit(.:format)                        rails/conductor/action_mailbox/inbound_emails#edit
        rails_conductor_inbound_email GET    /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#show
                                      PATCH  /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#update
                                      PUT    /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#update
                                      DELETE /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#destroy
rails_conductor_inbound_email_reroute POST   /rails/conductor/action_mailbox/:inbound_email_id/reroute(.:format)                      rails/conductor/action_mailbox/reroutes#create
                   rails_service_blob GET    /rails/active_storage/blobs/:signed_id/*filename(.:format)                               active_storage/blobs#show
            rails_blob_representation GET    /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show
                   rails_disk_service GET    /rails/active_storage/disk/:encoded_key/*filename(.:format)                              active_storage/disk#show
            update_rails_disk_service PUT    /rails/active_storage/disk/:encoded_token(.:format)                                      active_storage/disk#update
                 rails_direct_uploads POST   /rails/active_storage/direct_uploads(.:format)                                           active_storage/direct_uploads#create

Repository demostrating the issue

Running the script will demonstrate the issue

[tagliala]

Thanks, confirmed and replicated.

I think this is due to the fact that name is like a "reserved" word, and route_translator is generating the localized helpers in the wrong place, tricking minitest.

Will update this comment

The problem is that using test, then the suite will call test method unexpectedly. You can see the tests growing up from 1 to 7

[tagliala]

Harder than I thought, it requires deep investigation of test methods.

Adding "help wanted" label