overridden-routes-checker

[andreitsepliakou]

A new rule checks that there are no routes that override each other.
The overriding can be caused by an incorrect routes order in routes.rb.

E.g.

# config/routes.rb

# bad: 'import' keyword is considered as an invalid user id. 404 seems to be caused.
get "/users/:user_id/purchases", to: "purchases#index"
get "/users/import/purchases", to: "user_import_purchases#index"

# good: some 'import page' is rendered by some UserImportPurchasesController successfully
get "/users/import/purchases", to: "user_import_purchases#index"
get "/users/:user_id/purchases", to: "purchases#index"