mozilla/configman — pull request #77 by twobraids (2013-08-07 17:06:42+00:00)
Title: stopped dupe keys when assigning new value to existing key

a bug caused an internal structure to have duplicates if a key was changed using two different access methods. This caused the 'keys_breadth_first' method to return duplicate keys. This test insures that condition doesn't still trouble 'keys_breadth_first'