diff --git a/spec/database_cleaner/active_record/transaction_spec.rb b/spec/database_cleaner/active_record/transaction_spec.rb
new file mode 100644
index 0000000..2dc47e1
--- /dev/null
+++ b/spec/database_cleaner/active_record/transaction_spec.rb
@@ -0,0 +1,66 @@
+require File.dirname(__FILE__) + '/../../spec_helper'
+require 'database_cleaner/active_record/transaction'
+require 'active_record'
+
+module DatabaseCleaner
+  module ActiveRecord
+
+    describe Transaction do
+      let (:connection) { mock("connection") }
+      before(:each) do
+        #connection.stub!(:disable_referential_integrity).and_yield
+        ::ActiveRecord::Base.stub!(:connection).and_return(connection)
+      end
+
+      describe "start" do
+        it "should increment open transactions if possible" do
+          connection.stub!(:respond_to?).with(:increment_open_transactions).and_return(true)
+          connection.stub!(:begin_db_transaction)
+          
+          connection.should_receive(:increment_open_transactions)
+          Transaction.new.start
+        end
+        
+        it "should tell ActiveRecord to increment connection if its not possible to increment current connection" do
+          connection.stub!(:respond_to?).with(:increment_open_transactions).and_return(false)
+          connection.stub!(:begin_db_transaction)
+          
+          ::ActiveRecord::Base.should_receive(:increment_open_transactions)
+          Transaction.new.start
+        end
+        
+        it "should start a transaction" do
+            connection.stub!(:increment_open_transactions)
+            
+            connection.should_receive(:begin_db_transaction)
+            Transaction.new.start
+        end
+      end
+      
+      describe "clean" do
+        it "should start a transaction" do
+            connection.stub!(:decrement_open_transactions)
+
+            connection.should_receive(:rollback_db_transaction)
+            Transaction.new.clean
+        end
+        it "should decrement open transactions if possible" do
+          connection.stub!(:respond_to?).with(:decrement_open_transactions).and_return(true)
+          connection.stub!(:rollback_db_transaction)
+
+          connection.should_receive(:decrement_open_transactions)
+          Transaction.new.clean
+        end
+
+        it "should decrement connection via ActiveRecord::Base if connection won't" do
+          connection.stub!(:respond_to?).with(:decrement_open_transactions).and_return(false)
+          connection.stub!(:rollback_db_transaction)
+
+          ::ActiveRecord::Base.should_receive(:decrement_open_transactions)
+          Transaction.new.clean
+        end
+      end
+    end
+
+  end
+end