"truncate all"?

Hi!

Would it be possible to implement a "truncate all" that purges all tuples
from *all* tables, without taking account any rules or triggers, but
leaving all table structures and rules, triggers, functions, etc intact
(sequences do not need to reinitialized)?

As far as I understand, the "no truncate if table is referenced" change was
introduced to ensure database integrity. However, if the referencing table
is truncated, too, there should be no problem as far as foreign keys are
concerned, correct?

The rationale behind this suggestion is that in our project we need a
*quick* way to get rid of all the tuples in all tables in order to
accelerate the reinitialization of the database for our unit tests. This
needs to be done fairly often, and so the quicker the unit tests run, the
easier it will be to include many unit tests in our project, thus ensuring
that we can develop efficiently and safely in postgresql.

If you know of some other *quick* way to truncate all tables, please let us
know. BTW: Starting and later rolling back a transaction will not work, as
we also need to check whether the correct exceptions are raised. This "all"
option to "truncate" would really help to accelerate unit tests (besides of
making them more readable) and should be fairly easy to implement, but I am
not sure how to change the relevant postgresql code. I would be glad if
someone could suggest some easy way to do it, and what needs to be observed
to implement such an extension of postgresql. I also hope that such an
extension could be included in future version of postgresql, but for now
some easy patch to the latest version would do as well.

Thanks for your time,
Andi.