Require OS.

panozzaj · panozzaj · commit 6a6994a301a0 · 2012-06-15T18:13:25.000-04:00
diff --git a/lib/fakefs/dir.rb b/lib/fakefs/dir.rb
@@ -1,3 +1,5 @@
+require 'fakefs/os'
+
 module FakeFS
   class Dir
     include Enumerable
