Require time zone helper for tests

Author: ball-hayden

test/test_helper.rb

@@ -12,6 +12,7 @@
 require 'minitest/autorun'
 
 require 'active_model'
+require 'active_support/core_ext/time/zones'
 require 'date_validator'
 
 I18n.load_path += Dir[File.expand_path(File.join(File.dirname(__FILE__), '../config/locales', '*.yml')).to_s]