Skip site navigation (1) Skip section navigation (2)

Create a separate test file for exercising system views

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-hackers(at)postgreSQL(dot)org
Subject: Create a separate test file for exercising system views
Date: 2017-01-29 21:02:21
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
In connection with the "pg_hba_file_settings view patch" thread, I was
wondering where we could logically insert a regression test case for that
view.  I realized that there is no natural home for it among the existing
regression tests, because it's not really connected to any SQL language
feature.  The same is true for a number of other built-in views, and
unsurprisingly, most of them are not exercised anywhere :-(.

Accordingly, I propose creating a new regression test file whose charter
is to exercise the SRFs underlying system views, as per attached.
I don't think we desperately need new tests for views that expand to
simple SQL, but these test cases correspond directly to code coverage
for C functions, so they seem worthwhile.

I did not do anything about testing the various pg_stat_xxx views.
Those could be added later, or maybe they deserve their own home.
(In many cases, those would need something smarter than the basic
count(*) technique used here, because the C functions are invoked
in the view's SELECT list not in FROM, so the planner would throw
away those calls.)


			regards, tom lane

Attachment: new-sysviews-test-1.patch
Description: text/x-diff (10.7 KB)


pgsql-hackers by date

Next:From: David RowleyDate: 2017-01-29 21:07:04
Subject: Re: CONNECTION LIMIT and Parallel Query don't play well together
Previous:From: Corey HuinkerDate: 2017-01-29 20:40:31
Subject: Re: \if, \elseif, \else, \endif (was Re: PSQL commands: \quit_if, \quit_unless)

Privacy Policy | About PostgreSQL
Copyright © 1996-2017 The PostgreSQL Global Development Group