JumpstartLab/sales_engine_spec_harness — pull request #3 by worace (2012-03-29 00:15:24+00:00)
Title: use a random transaction instead of a double

Some people used helper methods on SalesEngine::Transaction to test "successful", so using a stub gives errors when it doesn't respond to this method. Using a random transaction and forcing into the invoice in question seems to fix this problem