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ca129e58c0
In commit 18555b132 we tentatively established a rule that regression
tests should use names containing "regression" for databases, and names
starting with "regress_" for all other globally-visible object names, so
as to circumscribe the side-effects that "make installcheck" could have on
an existing installation. However, no enforcement mechanism was created,
so it's unsurprising that some new violations have crept in since then.
In fact, a whole new *category* of violations has crept in, to wit we now
also have globally-visible subscription and replication origin names, and
"make installcheck" could very easily clobber user-created objects of
those types. So it's past time to do something about this.
This commit sanitizes the tests enough that they will pass (i.e. not
generate any visible warnings) with the enforcement mechanism I'll add
in the next commit. There are some TAP tests that still trigger the
warnings, but the warnings do not cause test failure. Since these tests
do not actually run against a pre-existing installation, there's no need
to worry whether they could conflict with user-created objects.
The problem with rolenames.sql testing special role names like "user"
is still there, and is dealt with only very cosmetically in this patch
(by hiding the warnings :-(). What we actually need to do to be safe is
to take that test script out of "make installcheck" altogether, but that
seems like material for a separate patch.
Discussion: https://postgr.es/m/16638.1468620817@sss.pgh.pa.us
165 lines
6.8 KiB
Plaintext
165 lines
6.8 KiB
Plaintext
-- predictability
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SET synchronous_commit = on;
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DROP TABLE IF EXISTS replication_example;
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-- Ensure there's tables with toast datums. To do so, we dynamically
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-- create a function returning a large textblob. We want tables of
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-- different kinds: mapped catalog table, unmapped catalog table,
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-- shared catalog table and usertable.
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CREATE FUNCTION exec(text) returns void language plpgsql volatile
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AS $f$
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BEGIN
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EXECUTE $1;
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END;
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$f$;
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CREATE ROLE regress_justforcomments NOLOGIN;
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SELECT exec(
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format($outer$CREATE FUNCTION iamalongfunction() RETURNS TEXT IMMUTABLE LANGUAGE SQL AS $f$SELECT text %L$f$$outer$,
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(SELECT repeat(string_agg(to_char(g.i, 'FM0000'), ''), 50) FROM generate_series(1, 500) g(i))));
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exec
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------
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(1 row)
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SELECT exec(
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format($outer$COMMENT ON FUNCTION iamalongfunction() IS %L$outer$,
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iamalongfunction()));
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exec
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------
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(1 row)
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SELECT exec(
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format($outer$COMMENT ON ROLE REGRESS_JUSTFORCOMMENTS IS %L$outer$,
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iamalongfunction()));
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exec
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------
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(1 row)
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CREATE TABLE iamalargetable AS SELECT iamalongfunction() longfunctionoutput;
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-- verify toast usage
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SELECT pg_relation_size((SELECT reltoastrelid FROM pg_class WHERE oid = 'pg_proc'::regclass)) > 0;
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?column?
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----------
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t
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(1 row)
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SELECT pg_relation_size((SELECT reltoastrelid FROM pg_class WHERE oid = 'pg_description'::regclass)) > 0;
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?column?
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----------
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t
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(1 row)
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SELECT pg_relation_size((SELECT reltoastrelid FROM pg_class WHERE oid = 'pg_shdescription'::regclass)) > 0;
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?column?
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----------
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t
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(1 row)
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
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?column?
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----------
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init
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(1 row)
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CREATE TABLE replication_example(id SERIAL PRIMARY KEY, somedata int, text varchar(120));
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INSERT INTO replication_example(somedata) VALUES (1);
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SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
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data
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----------------------------------------------------------------------------------------------------------
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BEGIN
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table public.replication_example: INSERT: id[integer]:1 somedata[integer]:1 text[character varying]:null
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COMMIT
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(3 rows)
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BEGIN;
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INSERT INTO replication_example(somedata) VALUES (2);
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ALTER TABLE replication_example ADD COLUMN testcolumn1 int;
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INSERT INTO replication_example(somedata, testcolumn1) VALUES (3, 1);
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COMMIT;
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BEGIN;
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INSERT INTO replication_example(somedata) VALUES (3);
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ALTER TABLE replication_example ADD COLUMN testcolumn2 int;
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INSERT INTO replication_example(somedata, testcolumn1, testcolumn2) VALUES (4, 2, 1);
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COMMIT;
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VACUUM FULL pg_am;
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VACUUM FULL pg_amop;
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VACUUM FULL pg_proc;
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VACUUM FULL pg_opclass;
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VACUUM FULL pg_type;
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VACUUM FULL pg_index;
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VACUUM FULL pg_database;
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-- repeated rewrites that fail
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BEGIN;
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CLUSTER pg_class USING pg_class_oid_index;
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CLUSTER pg_class USING pg_class_oid_index;
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ROLLBACK;
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-- repeated rewrites that succeed
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BEGIN;
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CLUSTER pg_class USING pg_class_oid_index;
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CLUSTER pg_class USING pg_class_oid_index;
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CLUSTER pg_class USING pg_class_oid_index;
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COMMIT;
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-- repeated rewrites in different transactions
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VACUUM FULL pg_class;
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VACUUM FULL pg_class;
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-- reindexing of important relations / indexes
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REINDEX TABLE pg_class;
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REINDEX INDEX pg_class_oid_index;
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REINDEX INDEX pg_class_tblspc_relfilenode_index;
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INSERT INTO replication_example(somedata, testcolumn1) VALUES (5, 3);
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BEGIN;
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INSERT INTO replication_example(somedata, testcolumn1) VALUES (6, 4);
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ALTER TABLE replication_example ADD COLUMN testcolumn3 int;
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INSERT INTO replication_example(somedata, testcolumn1, testcolumn3) VALUES (7, 5, 1);
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COMMIT;
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-- make old files go away
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CHECKPOINT;
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SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
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data
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----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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BEGIN
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table public.replication_example: INSERT: id[integer]:2 somedata[integer]:2 text[character varying]:null
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table public.replication_example: INSERT: id[integer]:3 somedata[integer]:3 text[character varying]:null testcolumn1[integer]:1
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COMMIT
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BEGIN
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table public.replication_example: INSERT: id[integer]:4 somedata[integer]:3 text[character varying]:null testcolumn1[integer]:null
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table public.replication_example: INSERT: id[integer]:5 somedata[integer]:4 text[character varying]:null testcolumn1[integer]:2 testcolumn2[integer]:1
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COMMIT
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BEGIN
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table public.replication_example: INSERT: id[integer]:6 somedata[integer]:5 text[character varying]:null testcolumn1[integer]:3 testcolumn2[integer]:null
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COMMIT
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BEGIN
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table public.replication_example: INSERT: id[integer]:7 somedata[integer]:6 text[character varying]:null testcolumn1[integer]:4 testcolumn2[integer]:null
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table public.replication_example: INSERT: id[integer]:8 somedata[integer]:7 text[character varying]:null testcolumn1[integer]:5 testcolumn2[integer]:null testcolumn3[integer]:1
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COMMIT
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(15 rows)
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-- trigger repeated rewrites of a system catalog with a toast table,
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-- that previously was buggy: 20180914021046.oi7dm4ra3ot2g2kt@alap3.anarazel.de
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VACUUM FULL pg_proc; VACUUM FULL pg_description; VACUUM FULL pg_shdescription; VACUUM FULL iamalargetable;
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INSERT INTO replication_example(somedata, testcolumn1, testcolumn3) VALUES (8, 6, 1);
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VACUUM FULL pg_proc; VACUUM FULL pg_description; VACUUM FULL pg_shdescription; VACUUM FULL iamalargetable;
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INSERT INTO replication_example(somedata, testcolumn1, testcolumn3) VALUES (9, 7, 1);
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SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
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data
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-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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BEGIN
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table public.replication_example: INSERT: id[integer]:9 somedata[integer]:8 text[character varying]:null testcolumn1[integer]:6 testcolumn2[integer]:null testcolumn3[integer]:1
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COMMIT
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BEGIN
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table public.replication_example: INSERT: id[integer]:10 somedata[integer]:9 text[character varying]:null testcolumn1[integer]:7 testcolumn2[integer]:null testcolumn3[integer]:1
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COMMIT
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(6 rows)
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SELECT pg_drop_replication_slot('regression_slot');
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pg_drop_replication_slot
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--------------------------
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(1 row)
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DROP TABLE IF EXISTS replication_example;
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DROP FUNCTION iamalongfunction();
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DROP FUNCTION exec(text);
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DROP ROLE regress_justforcomments;
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