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Coverage of the query jumbling code has always relied on the queries
included in the regression tests of pg_stat_statements. This has its
limitations, as a lot of query patterns have never really stressed the
query jumbling code. The situation got a bit worse since the query
jumbling has been added in the backend core code (5fd9dfa), hence new
nodes that should be included in the jumbling could easily be missed,
resulting in failures in pg_stat_statements or any modules that require
query ID computations. Forcing a load of pg_stat_statements in
027_stream_regress.pl ensures that nodes are never missed in the
computations, without having to rely on a buildfarm member for this
check.
Before this commit, the line coverage of queryjumblefuncs.funcs.c was
around 48.5%, now up to 94.6% just by running 027_stream_regress.pl.
A basic check is added to show that pg_stat_statements reports are
generated after the main regression test suite is finished.
Discussion: https://postgr.es/m/Y+nD9LN70w+8eaG9@paquier.xyz
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Commit c3382a3c3, which moved the implementation of PG_TEST_EXTRA
from src/test/Makefile into individual test scripts, broke the
directions given in the subdirectory README files about how to run
these tests by hand. Update. Also mention wal_consistency_checking
in recovery/README --- that omission isn't the fault of c3382a3c3,
but it's still an omission.
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Commit e2f65f425 added contrib/pg_prewarm to the prerequisites for
running the src/test/recovery suite, but did not bother to update
the documentation about that.
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Rearrange src/test/perl/README so that the first section is more
clearly "how to run these tests", and the rest "how to write new
tests". Add some basic info there about debugging test failures.
Then, add cross-refs to that READNE from other READMEs that
describe how to run TAP tests.
Per suggestion from Kevin Burke, though this is not his original
patch.
Discussion: https://postgr.es/m/CAKcy5eiSbwiQnmCfnOnDCVC7B8fYyev3E=6pvvECP9pLE-Fcuw@mail.gmail.com
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The pump_nb() step might've already received the desired data, so we must
check for that at the top of the loop not the bottom. Otherwise, the
call to pump() will sit with nothing to do until the timeout elapses.
pump_until then falls out with apparent success ... but the timeout has
been used up, causing the next call of pump_until to report a timeout
failure. I believe this explains the intermittent timeout failures
we've seen in the buildfarm ever since this test went in. I was able
to reproduce the problem on gaur semi-repeatably, and this appears to
fix it.
In passing, remove a duplicate assignment, fix one stdin-assignment to
look like the rest, and document the test's dependency on test_decoding.
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Explain the difference between "make check" and "make installcheck".
Mention the need for --enable-tap-tests (only some of these did so
before). Standardize their wording about how to run the tests.
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Several of the test suites under src/test/ were missing an installcheck
target.
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Author: Michael Paquier
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This long-awaited framework is an expansion of the existing PostgresNode
stuff to support additional features for recovery testing; the recovery
tests included in this commit are a starting point that cover some of
the recovery features we have. More scripts are expected to be added
later.
Author: Michaël Paquier, a bit of help from Amir Rohan
Reviewed by: Amir Rohan, Stas Kelvich, Kyotaro Horiguchi, Victor Wagner,
Craig Ringer, Álvaro Herrera
Discussion: http://www.postgresql.org/message-id/CAB7nPqTf7V6rswrFa=q_rrWeETUWagP=h8LX8XAov2Jcxw0DRg@mail.gmail.com
Discussion: http://www.postgresql.org/message-id/trinity-b4a8035d-59af-4c42-a37e-258f0f28e44a-1443795007012@3capp-mailcom-lxa08
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