test: Update build setup

Rakefile

@@ -1,5 +1,16 @@
 # frozen_string_literal: true
 
+begin
+  require 'bundler/setup'
+rescue LoadError
+  puts 'You must `gem install bundler` and `bundle install` to run rake tasks'
+end
+
+APP_RAKEFILE = File.expand_path("spec/dummy/Rakefile", __dir__)
+load 'rails/tasks/engine.rake'
+
+load 'rails/tasks/statistics.rake'
+
 require 'bundler/gem_tasks'
 
 begin