up: add rake to run spec with config enabled

Rakefile

@@ -5,3 +5,21 @@ require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new
 
 task default: :spec
+
+desc 'Runs tests with config enabled'
+task :spec_config do
+  directory_config = File.expand_path('config')
+  unsafe_path      = ['', '/', '.', './'].include?(directory_config)
+
+  `mkdir -p #{directory_config}`
+
+  File.open(File.expand_path('config/rating.yml'), 'w+') do |file|
+    file.write "rating:\n  rate_table: 'reviews'\n  rating_table: 'review_ratings'"
+  end
+
+  ENV['CONFIG_ENABLED'] = 'true'
+
+  Rake::Task['spec'].invoke
+
+  FileUtils.rm_rf(directory_config) unless unsafe_path
+end