1 files changed, 3 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index cb5c5740c3..45a6cff346 100755
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -173,6 +173,9 @@ module ActiveRecord
         "rails_savepoint_#{open_transactions}"
       end
       
+      # Whether this AbstractAdapter is currently being used inside a unit test
+      # with transactional fixtures turned on. See DatabaseStatements#transaction
+      # for more information about the effect of this option.
       attr_accessor :transactional_fixtures
 
       def log_info(sql, name, seconds)