Verify test_order= setter exists

Author: josh

test/test_helper.rb

@@ -24,4 +24,4 @@
 # Load support files
 Dir["#{File.dirname(__FILE__)}/support/**/*.rb"].each { |f| require f }
 
-ActiveSupport::TestCase.test_order = :random if ActiveSupport::TestCase.respond_to?(:test_order)
+ActiveSupport::TestCase.test_order = :random if ActiveSupport::TestCase.respond_to?(:test_order=)