Forum OpenACS Development: Re: In 5.3.0 final, unable to drop content type using content_type__drop_type() in pg-8.1.5

This led me to run the automated tests, which passed for the cr. This confused me; why would the tests pass if there was a problem? So I looked at the tests, and learned enough to add some tests which confirmed for folders, items and revisions that deleting them worked. When I add this same thing to all cr objects, I'll provide a diff; should be in a day or so.
Here is the diff that adds tests of various deletes (again, to 5.3.0 final, and again, wouldn't be a bad thing IMO to add them for 5.3.1)