Remove useless tests for TRUNCATE on foreign tables

foreign_data has kept around a set of tests for TRUNCATE to look after
the case of foreign tables, with[out] inheritance and with[out]
partitions, assuming that the command is not supported for this relkind.
However, TRUNCATE is supported on foreign tables if the FDW involved is
able to handle the command, like postgres_fdw.

Note that postgres_fdw includes tests to cover all the cases removed by
this commit (which had misleading comments), so these did not provide
any additional coverage anyway.

Author: Yugo Nagata
Discussion: https://postgr.es/m/20220527172543.0a2fdb469cf048b81c0967d3@sraoss.co.jp

diff --git a/src/test/regress/expected/foreign_data.out b/src/test/regress/expected/foreign_data.out
index 5bf03680d21ed819695e0491efc9066ba5ee7cec..33505352cc5a802282346a508c0e59594d702971 100644 (file)
--- a/src/test/regress/expected/foreign_data.out
+++ b/src/test/regress/expected/foreign_data.out
@@ -1822,11 +1822,6 @@ Server: s0
 FDW options: (delimiter ',', quote '"', "be quoted" 'value')
 Inherits: fd_pt1
 
--- TRUNCATE doesn't work on foreign tables, either directly or recursively
-TRUNCATE ft2;  -- ERROR
-ERROR:  foreign-data wrapper "dummy" has no handler
-TRUNCATE fd_pt1;  -- ERROR
-ERROR:  foreign-data wrapper "dummy" has no handler
 DROP TABLE fd_pt1 CASCADE;
 NOTICE:  drop cascades to foreign table ft2
 -- IMPORT FOREIGN SCHEMA
@@ -2047,11 +2042,6 @@ ALTER TABLE fd_pt2 ATTACH PARTITION fd_pt2_1 FOR VALUES IN (1);       -- ERROR
 ERROR:  child table is missing constraint "fd_pt2chk1"
 ALTER FOREIGN TABLE fd_pt2_1 ADD CONSTRAINT fd_pt2chk1 CHECK (c1 > 0);
 ALTER TABLE fd_pt2 ATTACH PARTITION fd_pt2_1 FOR VALUES IN (1);
--- TRUNCATE doesn't work on foreign tables, either directly or recursively
-TRUNCATE fd_pt2_1;  -- ERROR
-ERROR:  foreign-data wrapper "dummy" has no handler
-TRUNCATE fd_pt2;  -- ERROR
-ERROR:  foreign-data wrapper "dummy" has no handler
 DROP FOREIGN TABLE fd_pt2_1;
 DROP TABLE fd_pt2;
 -- foreign table cannot be part of partition tree made of temporary

diff --git a/src/test/regress/sql/foreign_data.sql b/src/test/regress/sql/foreign_data.sql
index 9dfff66f54720a8a7dce598a863373f6dfbb3e0f..eefb860adc37d77cf91f324c3b6038710307c6e2 100644 (file)
--- a/src/test/regress/sql/foreign_data.sql
+++ b/src/test/regress/sql/foreign_data.sql
@@ -746,10 +746,6 @@ ALTER TABLE fd_pt1 RENAME CONSTRAINT fd_pt1chk3 TO f2_check;
 \d+ fd_pt1
 \d+ ft2
 
--- TRUNCATE doesn't work on foreign tables, either directly or recursively
-TRUNCATE ft2;  -- ERROR
-TRUNCATE fd_pt1;  -- ERROR
-
 DROP TABLE fd_pt1 CASCADE;
 
 -- IMPORT FOREIGN SCHEMA
@@ -833,10 +829,6 @@ ALTER TABLE fd_pt2 ATTACH PARTITION fd_pt2_1 FOR VALUES IN (1);       -- ERROR
 ALTER FOREIGN TABLE fd_pt2_1 ADD CONSTRAINT fd_pt2chk1 CHECK (c1 > 0);
 ALTER TABLE fd_pt2 ATTACH PARTITION fd_pt2_1 FOR VALUES IN (1);
 
--- TRUNCATE doesn't work on foreign tables, either directly or recursively
-TRUNCATE fd_pt2_1;  -- ERROR
-TRUNCATE fd_pt2;  -- ERROR
-
 DROP FOREIGN TABLE fd_pt2_1;
 DROP TABLE fd_pt2;