Adds new follower/following routes (#24601)

config/routes.rb

@@ -83,6 +83,8 @@ Rails.application.routes.draw do
   }
 
   get '/users/:username', to: redirect('/@%{username}'), constraints: lambda { |req| req.format.nil? || req.format.html? }
+  get '/users/:username/following', to: redirect('/@%{username}/following'), constraints: lambda { |req| req.format.nil? || req.format.html? }
+  get '/users/:username/followers', to: redirect('/@%{username}/followers'), constraints: lambda { |req| req.format.nil? || req.format.html? }
   get '/users/:username/statuses/:id', to: redirect('/@%{username}/%{id}'), constraints: lambda { |req| req.format.nil? || req.format.html? }
   get '/authorize_follow', to: redirect { |_, request| "/authorize_interaction?#{request.params.to_query}" }
 

spec/requests/follower_accounts_spec.rb

+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe 'FollowerAccountsController' do
+  describe 'The follower_accounts route' do
+    it "returns a http 'moved_permanently' code" do
+      get '/users/:username/followers'
+
+      expect(response).to have_http_status(301)
+    end
+  end
+end

spec/requests/following_accounts_spec.rb

+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe 'FollowingAccountsController' do
+  describe 'The following_accounts route' do
+    it "returns a http 'moved_permanently' code" do
+      get '/users/:username/following'
+
+      expect(response).to have_http_status(301)
+    end
+  end
+end