Add some basic tests of GUC behavior.

Joachim Wieland

src/test/regress/expected/guc.out

+-- SET vacuum_cost_delay to some value
+SET vacuum_cost_delay TO 400;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 400ms
+(1 row)
+
+-- SET LOCAL has no effect outside of a transaction
+SET LOCAL vacuum_cost_delay TO 500;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 400ms
+(1 row)
+
+-- SET LOCAL within a transaction that commits
+BEGIN;
+SET LOCAL vacuum_cost_delay TO 500;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 500ms
+(1 row)
+
+COMMIT;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 400ms
+(1 row)
+
+-- SET should be reverted after ROLLBACK
+BEGIN;
+SET vacuum_cost_delay TO 600;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 600ms
+(1 row)
+
+ROLLBACK;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 400ms
+(1 row)
+
+-- Some tests with subtransactions
+BEGIN;
+SET vacuum_cost_delay TO 700;
+SAVEPOINT first_sp;
+SET vacuum_cost_delay TO 800;
+ROLLBACK TO first_sp;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 700ms
+(1 row)
+
+SAVEPOINT second_sp;
+SET vacuum_cost_delay TO 900;
+SAVEPOINT third_sp;
+SET vacuum_cost_delay TO 1000;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 1s
+(1 row)
+
+ROLLBACK TO third_sp;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 900ms
+(1 row)
+
+ROLLBACK TO second_sp;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 700ms
+(1 row)
+
+ROLLBACK;
+-- SET LOCAL with Savepoints
+BEGIN;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 400ms
+(1 row)
+
+SAVEPOINT sp;
+SET LOCAL vacuum_cost_delay TO 300;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 300ms
+(1 row)
+
+ROLLBACK TO sp;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 400ms
+(1 row)
+
+ROLLBACK;
+-- SET followed by SET LOCAL
+BEGIN;
+SET vacuum_cost_delay TO 400;
+SET LOCAL vacuum_cost_delay TO 500;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 500ms
+(1 row)
+
+COMMIT;
+SHOW vacuum_cost_delay;
+ vacuum_cost_delay 
+-------------------
+ 400ms
+(1 row)
+
+--
+-- Test RESET.  We use datestyle because the reset value is forced by
+-- pg_regress, so it doesn't depend on the installation's configuration.
+--
+SHOW datestyle;
+   DateStyle   
+---------------
+ Postgres, MDY
+(1 row)
+
+SET datestyle = iso, ymd;
+SHOW datestyle;
+ DateStyle 
+-----------
+ ISO, YMD
+(1 row)
+
+RESET datestyle;
+SHOW datestyle;
+   DateStyle   
+---------------
+ Postgres, MDY
+(1 row)
+

src/test/regress/parallel_schedule

 # ----------
 # The first group of parallel test
-# $PostgreSQL: pgsql/src/test/regress/parallel_schedule,v 1.32 2006/03/11 04:38:41 momjian Exp $
+# $PostgreSQL: pgsql/src/test/regress/parallel_schedule,v 1.33 2006/08/04 00:00:13 tgl Exp $
 # ----------
 test: boolean char name varchar text int2 int4 int8 oid float4 float8 bit numeric
 
@@ -69,7 +69,7 @@ test: misc
 # ----------
 # The fifth group of parallel test
 # ----------
-test: select_views portals_p2 rules foreign_key cluster dependency
+test: select_views portals_p2 rules foreign_key cluster dependency guc
 
 # ----------
 # The sixth group of parallel test

src/test/regress/serial_schedule

-# $PostgreSQL: pgsql/src/test/regress/serial_schedule,v 1.30 2006/01/22 05:20:34 neilc Exp $
+# $PostgreSQL: pgsql/src/test/regress/serial_schedule,v 1.31 2006/08/04 00:00:13 tgl Exp $
 # This should probably be in an order similar to parallel_schedule.
 test: boolean
 test: char
@@ -84,6 +84,8 @@ test: portals_p2
 test: rules
 test: foreign_key
 test: cluster
+test: dependency
+test: guc
 test: limit
 test: plpgsql
 test: copy2
@@ -100,4 +102,3 @@ test: polymorphism
 test: rowtypes
 test: stats
 test: tablespace
-test: dependency

src/test/regress/sql/guc.sql

+-- SET vacuum_cost_delay to some value
+SET vacuum_cost_delay TO 400;
+SHOW vacuum_cost_delay;
+
+-- SET LOCAL has no effect outside of a transaction
+SET LOCAL vacuum_cost_delay TO 500;
+SHOW vacuum_cost_delay;
+
+-- SET LOCAL within a transaction that commits
+BEGIN;
+SET LOCAL vacuum_cost_delay TO 500;
+SHOW vacuum_cost_delay;
+COMMIT;
+SHOW vacuum_cost_delay;
+
+-- SET should be reverted after ROLLBACK
+BEGIN;
+SET vacuum_cost_delay TO 600;
+SHOW vacuum_cost_delay;
+ROLLBACK;
+SHOW vacuum_cost_delay;
+
+-- Some tests with subtransactions
+BEGIN;
+SET vacuum_cost_delay TO 700;
+SAVEPOINT first_sp;
+SET vacuum_cost_delay TO 800;
+ROLLBACK TO first_sp;
+SHOW vacuum_cost_delay;
+SAVEPOINT second_sp;
+SET vacuum_cost_delay TO 900;
+SAVEPOINT third_sp;
+SET vacuum_cost_delay TO 1000;
+SHOW vacuum_cost_delay;
+ROLLBACK TO third_sp;
+SHOW vacuum_cost_delay;
+ROLLBACK TO second_sp;
+SHOW vacuum_cost_delay;
+ROLLBACK;
+
+-- SET LOCAL with Savepoints
+BEGIN;
+SHOW vacuum_cost_delay;
+SAVEPOINT sp;
+SET LOCAL vacuum_cost_delay TO 300;
+SHOW vacuum_cost_delay;
+ROLLBACK TO sp;
+SHOW vacuum_cost_delay;
+ROLLBACK;
+
+-- SET followed by SET LOCAL
+BEGIN;
+SET vacuum_cost_delay TO 400;
+SET LOCAL vacuum_cost_delay TO 500;
+SHOW vacuum_cost_delay;
+COMMIT;
+SHOW vacuum_cost_delay;
+
+--
+-- Test RESET.  We use datestyle because the reset value is forced by
+-- pg_regress, so it doesn't depend on the installation's configuration.
+--
+SHOW datestyle;
+SET datestyle = iso, ymd;
+SHOW datestyle;
+RESET datestyle;
+SHOW datestyle;