spoke to soon, spec was randomly failing, believe due to a require order problem , fixed by requiring active record in the ""required"" spec

lib/database_cleaner/active_record/base.rb

@@ -1,5 +1,6 @@
 require 'database_cleaner/generic/base'
 require 'active_record/base'
+
 module DatabaseCleaner
   module ActiveRecord
     

spec/database_cleaner/active_record/truncation_spec.rb

@@ -1,6 +1,7 @@
 require File.dirname(__FILE__) + '/../../spec_helper'
+require 'active_record'
 require 'database_cleaner/active_record/truncation'
-require 'active_record/base'                 
+
 
 module ActiveRecord
   module ConnectionAdapters

spec/database_cleaner/configuration_spec.rb

@@ -1,6 +1,4 @@
 require File.dirname(__FILE__) + '/../spec_helper'
-require 'database_cleaner/active_record/transaction'
-require 'database_cleaner/data_mapper/transaction'
 
 module DatabaseCleaner
   class << self