Prepare Mastodon for zeitwerk autoloader (#15917)

* Prepare Mastodon for zeitwerk autoloader (Rails 6)

Add inflections and rename/move a few classes.

In particular, app/lib/exceptions.rb and app/lib/sanitize_config.rb
were manually loaded while still in autoload paths.

* Add inflection for Url → URL

app/lib/formatter.rb

 # frozen_string_literal: true
 
 require 'singleton'
-require_relative './sanitize_config'
 
 class Formatter
   include Singleton

app/validators/url_validator.rb

 # frozen_string_literal: true
 
-class UrlValidator < ActiveModel::EachValidator
+class URLValidator < ActiveModel::EachValidator
   def validate_each(record, attribute, value)
     record.errors.add(attribute, I18n.t('applications.invalid_url')) unless compliant?(value)
   end

config/application.rb

@@ -6,8 +6,9 @@ require 'rails/all'
 # you've limited to :test, :development, or :production.
 Bundler.require(*Rails.groups)
 
-require_relative '../app/lib/exceptions'
+require_relative '../lib/exceptions'
 require_relative '../lib/enumerable'
+require_relative '../lib/sanitize_ext/sanitize_config'
 require_relative '../lib/redis/namespace_extensions'
 require_relative '../lib/paperclip/url_generator_extensions'
 require_relative '../lib/paperclip/attachment_extensions'

config/initializers/inflections.rb

@@ -20,6 +20,10 @@ ActiveSupport::Inflector.inflections(:en) do |inflect|
   inflect.acronym 'JsonLd'
   inflect.acronym 'NodeInfo'
   inflect.acronym 'Ed25519'
+  inflect.acronym 'TOC'
+  inflect.acronym 'RSS'
+  inflect.acronym 'REST'
+  inflect.acronym 'URL'
 
   inflect.singular 'data', 'data'
 end

db/migrate/20160223165723_add_url_to_statuses.rb

-class AddUrlToStatuses < ActiveRecord::Migration[4.2]
+class AddURLToStatuses < ActiveRecord::Migration[4.2]
   def change
     add_column :statuses, :url, :string, null: true, default: nil
   end

db/migrate/20160223165855_add_url_to_accounts.rb

-class AddUrlToAccounts < ActiveRecord::Migration[4.2]
+class AddURLToAccounts < ActiveRecord::Migration[4.2]
   def change
     add_column :accounts, :url, :string, null: true, default: nil
   end

db/migrate/20160322193748_add_avatar_remote_url_to_accounts.rb

-class AddAvatarRemoteUrlToAccounts < ActiveRecord::Migration[4.2]
+class AddAvatarRemoteURLToAccounts < ActiveRecord::Migration[4.2]
   def change
     add_column :accounts, :avatar_remote_url, :string, null: true, default: nil
   end

db/migrate/20170318214217_add_header_remote_url_to_accounts.rb

-class AddHeaderRemoteUrlToAccounts < ActiveRecord::Migration[5.0]
+class AddHeaderRemoteURLToAccounts < ActiveRecord::Migration[5.0]
   def change
     add_column :accounts, :header_remote_url, :string, null: false, default: ''
   end

db/migrate/20171130000000_add_embed_url_to_preview_cards.rb

 require Rails.root.join('lib', 'mastodon', 'migration_helpers')
 
-class AddEmbedUrlToPreviewCards < ActiveRecord::Migration[5.1]
+class AddEmbedURLToPreviewCards < ActiveRecord::Migration[5.1]
   include Mastodon::MigrationHelpers
 
   disable_ddl_transaction!

db/migrate/20180304013859_add_featured_collection_url_to_accounts.rb

-class AddFeaturedCollectionUrlToAccounts < ActiveRecord::Migration[5.1]
+class AddFeaturedCollectionURLToAccounts < ActiveRecord::Migration[5.1]
   def change
     add_column :accounts, :featured_collection_url, :string
   end

db/migrate/20200529214050_add_devices_url_to_accounts.rb

-class AddDevicesUrlToAccounts < ActiveRecord::Migration[5.2]
+class AddDevicesURLToAccounts < ActiveRecord::Migration[5.2]
   def change
     add_column :accounts, :devices_url, :string
   end

spec/lib/sanitize_config_spec.rb

 # frozen_string_literal: true
 
 require 'rails_helper'
-require Rails.root.join('app', 'lib', 'sanitize_config.rb')
 
 describe Sanitize::Config do
   describe '::MASTODON_STRICT' do

spec/validators/url_validator_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-RSpec.describe UrlValidator, type: :validator do
+RSpec.describe URLValidator, type: :validator do
   describe '#validate_each' do
     before do
       allow(validator).to receive(:compliant?).with(value) { compliant }