Testing Views

Hello All,

I have a problem for which a view seems like a nice solution. Basically we
want to see all records in some table that are older than 5 days and
haven't yet gone through further processing.

This particular view is probably simple enough that it doesn't require unit
tests but I wonder how people test complex views that depend on the current
date or time. I found a thread on the hackers list [1] that talked about
stubbing pg_catalog.now() but was wondering if any TDD minded developers
had invented anything better since then.

One option I thought of was to just not use views that depend on the
current date or time and instead create a set returning function that takes
the time as a parameter. Would such a function have similar performance
characteristics to an equivalent view?

Cheers,
Andy

[1]:
http://postgresql.nabble.com/overriding-current-timestamp-td5507701.html