Merge pull request #1221 from sikachu/fix_tests

Make sure that we're able to run Action Pack test standalone.

actionpack/test/abstract_unit.rb

@@ -1,4 +1,5 @@
 require File.expand_path('../../../load_paths', __FILE__)
+require File.expand_path('../../../version', __FILE__)
 
 lib = File.expand_path("#{File.dirname(__FILE__)}/../lib")
 $:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)

actionpack/test/template/sprockets_helper_test.rb

@@ -1,9 +1,14 @@
 require 'abstract_unit'
+
+module Rails
+  class Engine
+    def self.initializer(*args); end
+  end
+end
+
 require 'sprockets'
 require 'mocha'
 
-module Rails; end
-
 class SprocketsHelperTest < ActionView::TestCase
   tests ActionView::Helpers::SprocketsHelper