Merge pull request rails#4339 from rafaelfranca/patch-2

Require ActiveSupport::TestCase form ActiveSupport isolation tests

Author: josevalim

Diff for: actionpack/test/ts_isolated.rb

@@ -1,3 +1,4 @@
+$:.unshift(File.dirname(__FILE__))
 $:.unshift(File.dirname(__FILE__) + '/../../activesupport/lib')
 
 require 'test/unit'

Diff for: activesupport/test/ts_isolated.rb

@@ -1,6 +1,7 @@
 $:.unshift(File.dirname(__FILE__) + '/../../activesupport/lib')
 
 require 'test/unit'
+require 'active_support/test_case'
 require 'rbconfig'
 require 'active_support/core_ext/kernel/reporting'