Re: [HACKERS] removing abstime, reltime, tinterval.c, spi/timetravel

On 10/11/2018 05:11 PM, Tom Lane wrote:
> Andres Freund <andres@anarazel.de> writes:
>> On 2018-10-11 16:57:02 -0400, Tom Lane wrote:
>>> Another idea would be to put table drops into the back branch regression
>>> tests, so that their ending states don't include any such tables.  That
>>> would cripple pg_dump testing of these types in the back branches, but
>>> I'm not sure if we really care much.
>> I think the latter is the better choice. Given the code for those types
>> hasn't changed meaningfully in the last decade, I think not having
>> pg_dump coverage would be ok.
>>> I don't especially like either of these choices --- anyone got another
>>> idea?
>> Nope :(
> A compromise that occurred to me after a bit of reflection is to place
> the necessary table-drop commands in a new regression test script that's
> meant to be executed last, but isn't actually run by default.  Then
> teach the cross-version-update test script to include that script via
> EXTRA_TESTS.  Manual testing could do likewise.  Then we have a small
> amount of pain for testing upgrades, but we lose no test coverage in
> back branches.


That's not how it works. The module doesn't itself run the regression 
tests. It uses saved data from a normal buildfarm run against the 
version being upgraded from.

It does, however, do some fixups along the way. See 
<https://github.com/PGBuildFarm/client-code/blob/master/PGBuild/Modules/TestUpgradeXversion.pm> 
around line 315.

We could have it do something there, if the target branch was > 11. That 
way these things would still be tested for in an upgrade to any version 
that supports them.

cheers

andrew

-- 
Andrew Dunstan                https://www.2ndQuadrant.com
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