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+-- basic tests for the TID data type
+SELECT
+ '(0,0)'::tid as tid00,
+ '(0,1)'::tid as tid01,
+ '(-1,0)'::tid as tidm10,
+ '(4294967295,65535)'::tid as tidmax;
+ tid00 | tid01 | tidm10 | tidmax
+-------+-------+----------------+--------------------
+ (0,0) | (0,1) | (4294967295,0) | (4294967295,65535)
+(1 row)
+
+SELECT '(4294967296,1)'::tid; -- error
+ERROR: invalid input syntax for type tid: "(4294967296,1)"
+LINE 1: SELECT '(4294967296,1)'::tid;
+ ^
+SELECT '(1,65536)'::tid; -- error
+ERROR: invalid input syntax for type tid: "(1,65536)"
+LINE 1: SELECT '(1,65536)'::tid;
+ ^
+-- tests for functions related to TID handling
+CREATE TABLE tid_tab (a int);
+-- min() and max() for TIDs
+INSERT INTO tid_tab VALUES (1), (2);
+SELECT min(ctid) FROM tid_tab;
+ min
+-------
+ (0,1)
+(1 row)
+
+SELECT max(ctid) FROM tid_tab;
+ max
+-------
+ (0,2)
+(1 row)
+
+TRUNCATE tid_tab;
+-- Tests for currtid2() with various relation kinds
+-- Materialized view
+CREATE MATERIALIZED VIEW tid_matview AS SELECT a FROM tid_tab;
+SELECT currtid2('tid_matview'::text, '(0,1)'::tid); -- fails
+ERROR: tid (0, 1) is not valid for relation "tid_matview"
+INSERT INTO tid_tab VALUES (1);
+REFRESH MATERIALIZED VIEW tid_matview;
+SELECT currtid2('tid_matview'::text, '(0,1)'::tid); -- ok
+ currtid2
+----------
+ (0,1)
+(1 row)
+
+DROP MATERIALIZED VIEW tid_matview;
+TRUNCATE tid_tab;
+-- Sequence
+CREATE SEQUENCE tid_seq;
+SELECT currtid2('tid_seq'::text, '(0,1)'::tid); -- ok
+ currtid2
+----------
+ (0,1)
+(1 row)
+
+DROP SEQUENCE tid_seq;
+-- Index, fails with incorrect relation type
+CREATE INDEX tid_ind ON tid_tab(a);
+SELECT currtid2('tid_ind'::text, '(0,1)'::tid); -- fails
+ERROR: "tid_ind" is an index
+DROP INDEX tid_ind;
+-- Partitioned table, no storage
+CREATE TABLE tid_part (a int) PARTITION BY RANGE (a);
+SELECT currtid2('tid_part'::text, '(0,1)'::tid); -- fails
+ERROR: cannot look at latest visible tid for relation "public.tid_part"
+DROP TABLE tid_part;
+-- Views
+-- ctid not defined in the view
+CREATE VIEW tid_view_no_ctid AS SELECT a FROM tid_tab;
+SELECT currtid2('tid_view_no_ctid'::text, '(0,1)'::tid); -- fails
+ERROR: currtid cannot handle views with no CTID
+DROP VIEW tid_view_no_ctid;
+-- ctid fetched directly from the source table.
+CREATE VIEW tid_view_with_ctid AS SELECT ctid, a FROM tid_tab;
+SELECT currtid2('tid_view_with_ctid'::text, '(0,1)'::tid); -- fails
+ERROR: tid (0, 1) is not valid for relation "tid_tab"
+INSERT INTO tid_tab VALUES (1);
+SELECT currtid2('tid_view_with_ctid'::text, '(0,1)'::tid); -- ok
+ currtid2
+----------
+ (0,1)
+(1 row)
+
+DROP VIEW tid_view_with_ctid;
+TRUNCATE tid_tab;
+-- ctid attribute with incorrect data type
+CREATE VIEW tid_view_fake_ctid AS SELECT 1 AS ctid, 2 AS a;
+SELECT currtid2('tid_view_fake_ctid'::text, '(0,1)'::tid); -- fails
+ERROR: ctid isn't of type TID
+DROP VIEW tid_view_fake_ctid;
+DROP TABLE tid_tab CASCADE;