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Thread: [HACKERS] 1 test fails in make installcheck-world - database"regress_ecpg_user2" does not exist

[HACKERS] 1 test fails in make installcheck-world - database"regress_ecpg_user2" does not exist

From
Ryan Murphy
Date:
Hello Postgres Hackers,

I want to become more helpful to the project, reviewing more patches and starting to write more of my own - and one of the first steps is to get all the tests passing so I can confidently review patches.  It almost worked...

I typed "make check" and all the tests passed.
Then I typed "make installcheck" and all the tests passed again.

But when I typed "make installcheck-world", I got this:

=======================
 1 of 55 tests failed.
=======================

The differences that caused some tests to fail can be viewed in the
file "path/to/postgres/src/interfaces/ecpg/test/regression.diffs".  A copy of the test summary that you see
above is saved in the file "path/to/postgres/src/interfaces/ecpg/test/regression.out".

And when I look at that diffs file, this is what I see:

- [NO_PID]: ECPGconnect: could not open database: FATAL:  database "regress_ecpg_user2" does not exist

Why would this database not be getting created?  The full diffs file is attached.

Thanks for your help!
Ryan
Attachment

Re: [HACKERS] 1 test fails in make installcheck-world - database "regress_ecpg_user2" does not exist

From
Tom Lane
Date:
Ryan Murphy <ryanfmurphy@gmail.com> writes:
> And when I look at that diffs file, this is what I see:

> - [NO_PID]: ECPGconnect: could not open database: FATAL:  database
> "regress_ecpg_user2" does not exist

> Why would this database not be getting created?

No, you're reading it backwards: the error is expected, but it's not
appearing in your results.  I can duplicate this if I manually create
database "regress_ecpg_user2" before running ecpg's installcheck,
so I guess that's what you did.  I can find no evidence that any
part of the PG regression tests creates such a database.
        regards, tom lane

Re: [HACKERS] 1 test fails in make installcheck-world - database"regress_ecpg_user2" does not exist

From
Ryan Murphy
Date:

No, you're reading it backwards: the error is expected, but it's not
appearing in your results.  I can duplicate this if I manually create
database "regress_ecpg_user2" before running ecpg's installcheck,
so I guess that's what you did.  I can find no evidence that any
part of the PG regression tests creates such a database.

Thanks, that makes sense.  However, when I go into my database
with psql and type `drop database regress_ecpg_user2;`, the
response is "ERROR:  database "regress_ecpg_user2" does not exist".
So it seems either the tests are creating it somehow and then cleaning
it up (though I agree that I found no obvious evidence of that in the
codebase), or could I be looking in the wrong postgres install?

I think it's the same install though.  I have my postgres installing into an
install_dir/ directory.  Here's how I run configure:

#!/bin/sh
CFLAGS='-O0' ./configure \
    --prefix=path/to/postgres/install_dir/ \
    --with-uuid=e2fs \
    --enable-debug \
    --with-perl

I did notice that the test seems to create a ROLE called regress_ecpg_user2:

$ git grep -n 'regress_ecpg_user2'
src/interfaces/ecpg/test/Makefile:78:REGRESS_OPTS = --dbname=ecpg1_regression,ecpg2_regression --create-role=regress_ecpg_user1,regress_ecpg_user2 $(EXTRA_REGRESS_OPTS)
...

Could that implicitly create a database too?  I know that I somehow have a
database named after my username / postgres role "murftown".

I ran "make installcheck-world" again, and, the result is different this time -
a test called "misc_sanity" failed early on in the tests:

$ make installcheck-world
make -C src/test installcheck
make -C perl installcheck
make[2]: Nothing to be done for `installcheck'.
make -C regress installcheck
...
============== dropping database "regression"         ==============
DROP DATABASE
============== creating database "regression"         ==============
CREATE DATABASE
ALTER DATABASE
============== running regression test queries        ==============
test tablespace               ... ok
test boolean                  ... ok
test char                     ... ok
...
test regex                    ... ok
test oidjoins                 ... ok
test type_sanity              ... ok
test opr_sanity               ... ok
test misc_sanity              ... FAILED
test comments                 ... ok
test expressions              ... ok
test insert                   ... ok
test insert_conflict          ... ok
test create_function_1        ... ok
...

The old failure with the missing error message is gone from regression.diffs this time.
I've attached the new regression.diffs.

Best,
Ryan

Attachment

Re: [HACKERS] 1 test fails in make installcheck-world - database "regress_ecpg_user2" does not exist

From
Tom Lane
Date:
Ryan Murphy <ryanfmurphy@gmail.com> writes:
> I did notice that the test seems to create a ROLE called regress_ecpg_user2:

Right.

> Could that implicitly create a database too?  I know that I somehow have a
> database named after my username / postgres role "murftown".

Maybe you've got some tool somewhere that automatically creates databases
for users?  PG itself doesn't.

> I've attached the new regression.diffs.

Oh, huh, that's actually a bug in the misc_sanity test --- it is legit for
at least some rows in pg_shdepend to have zero dbid.  That doesn't happen
when working in an empty installation, but yours evidently isn't.  Thanks
for reporting it!
        regards, tom lane

Re: [HACKERS] 1 test fails in make installcheck-world - database"regress_ecpg_user2" does not exist

From
Ryan Murphy
Date:

Thanks for reporting it!
 
My pleasure!

So the initial issue didn't happen the 2nd time.  So if misc_sanity was the only test
failing then I guess my tests are working fine other than that.  Sweet!

When I get a break from work I'll review some patches!

Best,
Ryan