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This test already knew that, to get stable test output, it had to hide "loops" counts in EXPLAIN ANALYZE results. But that's not nearly enough: if we get a smaller number of workers than we planned for, then the "Workers Launched" number will change, and so will all the rows and loops counts up to the Gather node. This has resulted in repeated failures in the buildfarm, so adjust the test to filter out all these counts. (Really, we wouldn't bother with EXPLAIN ANALYZE at all here, except that currently the only way to verify that executor-time pruning has happened is to look for '(never executed)' annotations. Those are stable and needn't be filtered out.) Back-patch to v11 where the test was introduced. Discussion: https://postgr.es/m/11952.1569536725@sss.pgh.pa.us
PostgreSQL tests ================ This directory contains a variety of test infrastructure as well as some of the tests in PostgreSQL. Not all tests are here -- in particular, there are more in individual contrib/ modules and in src/bin. Not all these tests get run by "make check". Check src/test/Makefile to see which tests get run automatically. authentication/ Tests for authentication examples/ Demonstration programs for libpq that double as regression tests via "make check" isolation/ Tests for concurrent behavior at the SQL level locale/ Sanity checks for locale data, encodings, etc mb/ Tests for multibyte encoding (UTF-8) support modules/ Extensions used only or mainly for test purposes, generally not suitable for installing in production databases perl/ Infrastructure for Perl-based TAP tests recovery/ Test suite for recovery and replication regress/ PostgreSQL's main regression test suite, pg_regress ssl/ Tests to exercise and verify SSL certificate handling subscription/ Tests for logical replication thread/ A thread-safety-testing utility used by configure