Resources for unit tests

I am using Mike Lively's test-harness.php <http://www.digitalsandwich.com/test-harness.php> with test-more.php from Apache::Test for my unit test framework. I have also begun writing stubs for PostgreSQL functions to run behind that. These tests will be run on our function libraries as part of the build process just after code is checked out from the VCS system (Perforce), but before creating the installation RPMs. i.e. if a unit test fails, report the error and don't build the RPM. I am having some difficulty with the Postgres stubs that we don't have the experience to figure out. Some functions return a resource, which appears to be a complex form of array. Is there any way to build one through PHP code, or do I even need to. Since these resources will only be passed back into a later database call, can I simply replace them in the stubs with an array? We don't expect to dereference them anyway. Thank you, Bob McConnell