Add Ruby 3.0 support (#16046)

* Fix issues with POSIX::Spawn, Terrapin and Ruby 3.0

Also improve the Terrapin monkey-patch for the stderr/stdout issue.

* Fix keyword argument handling throughout the codebase

* Monkey-patch Paperclip to fix keyword arguments handling in validators

* Change validation_extensions to please CodeClimate

* Bump microformats from 4.2.1 to 4.3.1

* Allow Ruby 3.0

* Add Ruby 3.0 test target to CircleCI

* Add test for admin dashboard warnings

* Fix admin dashboard warnings on Ruby 3.0

app/controllers/activitypub/outboxes_controller.rb

@@ -20,7 +20,7 @@ class ActivityPub::OutboxesController < ActivityPub::BaseController
   def outbox_presenter
     if page_requested?
       ActivityPub::CollectionPresenter.new(
-        id: outbox_url(page_params),
+        id: outbox_url(**page_params),
         type: :ordered,
         part_of: outbox_url,
         prev: prev_page,

app/controllers/api/v1/accounts_controller.rb

@@ -35,7 +35,7 @@ class Api::V1::AccountsController < Api::BaseController
     follow  = FollowService.new.call(current_user.account, @account, reblogs: params.key?(:reblogs) ? truthy_param?(:reblogs) : nil, notify: params.key?(:notify) ? truthy_param?(:notify) : nil, with_rate_limit: true)
     options = @account.locked? || current_user.account.silenced? ? {} : { following_map: { @account.id => { reblogs: follow.show_reblogs?, notify: follow.notify? } }, requested_map: { @account.id => false } }
 
-    render json: @account, serializer: REST::RelationshipSerializer, relationships: relationships(options)
+    render json: @account, serializer: REST::RelationshipSerializer, relationships: relationships(**options)
   end
 
   def block
@@ -70,7 +70,7 @@ class Api::V1::AccountsController < Api::BaseController
   end
 
   def relationships(**options)
-    AccountRelationshipsPresenter.new([@account.id], current_user.account_id, options)
+    AccountRelationshipsPresenter.new([@account.id], current_user.account_id, **options)
   end
 
   def account_params

app/controllers/api/v1/follow_requests_controller.rb

@@ -29,7 +29,7 @@ class Api::V1::FollowRequestsController < Api::BaseController
   end
 
   def relationships(**options)
-    AccountRelationshipsPresenter.new([params[:id]], current_user.account_id, options)
+    AccountRelationshipsPresenter.new([params[:id]], current_user.account_id, **options)
   end
 
   def load_accounts

app/models/session_activation.rb

@@ -44,7 +44,7 @@ class SessionActivation < ApplicationRecord
     end
 
     def activate(**options)
-      activation = create!(options)
+      activation = create!(**options)
       purge_old
       activation
     end

app/models/user.rb

@@ -370,15 +370,20 @@ class User < ApplicationRecord
 
   protected
 
-  def send_devise_notification(notification, *args)
+  def send_devise_notification(notification, *args, **kwargs)
     # This method can be called in `after_update` and `after_commit` hooks,
     # but we must make sure the mailer is actually called *after* commit,
     # otherwise it may work on stale data. To do this, figure out if we are
     # within a transaction.
+
+    # It seems like devise sends keyword arguments as a hash in the last
+    # positional argument
+    kwargs = args.pop if args.last.is_a?(Hash) && kwargs.empty?
+
     if ActiveRecord::Base.connection.current_transaction.try(:records)&.include?(self)
-      pending_devise_notifications << [notification, args]
+      pending_devise_notifications << [notification, args, kwargs]
     else
-      render_and_send_devise_message(notification, *args)
+      render_and_send_devise_message(notification, *args, **kwargs)
     end
   end
 
@@ -389,8 +394,8 @@ class User < ApplicationRecord
   end
 
   def send_pending_devise_notifications
-    pending_devise_notifications.each do |notification, args|
-      render_and_send_devise_message(notification, *args)
+    pending_devise_notifications.each do |notification, args, kwargs|
+      render_and_send_devise_message(notification, *args, **kwargs)
     end
 
     # Empty the pending notifications array because the
@@ -403,8 +408,8 @@ class User < ApplicationRecord
     @pending_devise_notifications ||= []
   end
 
-  def render_and_send_devise_message(notification, *args)
-    devise_mailer.send(notification, self, *args).deliver_later
+  def render_and_send_devise_message(notification, *args, **kwargs)
+    devise_mailer.send(notification, self, *args, **kwargs).deliver_later
   end
 
   def set_approved

app/views/admin/dashboard/index.html.haml

@@ -5,7 +5,7 @@
   .flash-message-stack
     - @system_checks.each do |message|
       .flash-message.warning
-        = t("admin.system_checks.#{message.key}.message_html", message.value ? { value: content_tag(:strong, message.value) } : {})
+        = t("admin.system_checks.#{message.key}.message_html", value: message.value ? content_tag(:strong, message.value) : nil)
         - if message.action
           = link_to t("admin.system_checks.#{message.key}.action"), message.action
 

app/workers/import/relationship_worker.rb

@@ -5,7 +5,7 @@ class Import::RelationshipWorker
 
   sidekiq_options queue: 'pull', retry: 8, dead: false
 
-  def perform(account_id, target_account_uri, relationship, options = {})
+  def perform(account_id, target_account_uri, relationship, options)
     from_account   = Account.find(account_id)
     target_domain  = domain(target_account_uri)
     target_account = stoplight_wrap_request(target_domain) { ResolveAccountService.new.call(target_account_uri, { check_delivery_availability: true }) }
@@ -16,7 +16,7 @@ class Import::RelationshipWorker
     case relationship
     when 'follow'
       begin
-        FollowService.new.call(from_account, target_account, options)
+        FollowService.new.call(from_account, target_account, **options)
       rescue ActiveRecord::RecordInvalid
         raise if FollowLimitValidator.limit_for_account(from_account) < from_account.following_count
       end
@@ -27,7 +27,7 @@ class Import::RelationshipWorker
     when 'unblock'
       UnblockService.new.call(from_account, target_account)
     when 'mute'
-      MuteService.new.call(from_account, target_account, options)
+      MuteService.new.call(from_account, target_account, **options)
     when 'unmute'
       UnmuteService.new.call(from_account, target_account)
     end