Require Rails::VERSION so test can run in isolation

Author: pixeltrix

test/test_helper.rb

@@ -4,6 +4,7 @@
 require 'sprockets'
 require 'sprockets/rails/context'
 require 'sprockets/rails/helper'
+require 'rails/version'
 
 ActiveSupport::TestCase.test_order = :random if ActiveSupport::TestCase.respond_to?(:test_order=)