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Detect unused steps in isolation specs and do some cleanup

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This is useful for developers to find out if an isolation spec is
over-engineered or if it needs more work by warning at the end of a
test run if a step is not used, generating a failure with extra diffs.

While on it, clean up all the specs which include steps not used in any
permutations to simplify them.

This is a backpatch of 989d23b and 06fdc4e, as it is becoming useful to
make all the branches consistent for an upcoming patch that will improve
the output generated by isolationtester.

Author: Michael Paquier
Reviewed-by: Asim Praveen, Melanie Plageman
Discussion: https://postgr.es/m/20190819080820.GG18166@paquier.xyz
Discussion: https://postgr.es/m/794820.1623872009@sss.pgh.pa.us
Backpatch-through: 9.6
This commit is contained in:
Michael Paquier
2021-06-17 11:57:21 +09:00
parent a8f687927e
commit 96f3661e45
13 changed files with 40 additions and 41 deletions
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1
contrib/test_decoding/specs/snapshot_transfer.spec
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@ -26,7 +26,6 @@ step "s0_sub_get_base_snap" { INSERT INTO dummy VALUES (0); }
step "s0_insert" { INSERT INTO harvest VALUES (1, 2, 3); }
step "s0_end_sub0" { RELEASE SAVEPOINT s0; }
step "s0_end_sub1" { RELEASE SAVEPOINT s1; }
step "s0_insert2" { INSERT INTO harvest VALUES (1, 2, 3, 4); }
step "s0_commit" { COMMIT; }
step "s0_get_changes" { SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1'); }