get activerecord tests passing with lazy loading

activerecord/lib/active_record.rb

@@ -37,6 +37,9 @@ module ActiveRecord
     [Base, DynamicFinderMatch, ConnectionAdapters::AbstractAdapter]
   end
 
+  autoload :ActiveRecordError, 'active_record/base'
+  autoload :ConnectionNotEstablished, 'active_record/base'
+
   autoload :Aggregations, 'active_record/aggregations'
   autoload :AssociationPreload, 'active_record/association_preload'
   autoload :Associations, 'active_record/associations'

activerecord/lib/active_record/base.rb

@@ -2990,3 +2990,6 @@ module ActiveRecord #:nodoc:
     include Aggregations, Transactions, Reflection, Calculations, Serialization
   end
 end
+
+# TODO: Remove this and make it work with LAZY flag
+require 'active_record/connection_adapters/abstract_adapter'