Add tests for record_image_eq and record_image_cmp

record_image_eq was covered a bit by the materialized view code that it
is meant to support, but record_image_cmp was not tested at all.

While we're here, add more tests to record_eq and record_cmp as well,
for symmetry.

Reviewed-by: Michael Paquier <michael.paquier@gmail.com>

Author: petere

src/test/regress/expected/rowtypes.out

@@ -53,6 +53,22 @@ ERROR:  malformed record literal: "(Joe,,)"
 LINE 1: select '(Joe,,)'::fullname;
                ^
 DETAIL:  Too many columns.
+select '[]'::fullname;          -- bad
+ERROR:  malformed record literal: "[]"
+LINE 1: select '[]'::fullname;
+               ^
+DETAIL:  Missing left parenthesis.
+select ' (Joe,Blow)  '::fullname;  -- ok, extra whitespace
+  fullname  
+------------
+ (Joe,Blow)
+(1 row)
+
+select '(Joe,Blow) /'::fullname;  -- bad
+ERROR:  malformed record literal: "(Joe,Blow) /"
+LINE 1: select '(Joe,Blow) /'::fullname;
+               ^
+DETAIL:  Junk after right parenthesis.
 create temp table quadtable(f1 int, q quad);
 insert into quadtable values (1, ((3.3,4.4),(5.5,6.6)));
 insert into quadtable values (2, ((null,4.4),(5.5,6.6)));
@@ -369,6 +385,290 @@ LINE 1: select * from cc order by f1;
                                   ^
 HINT:  Use an explicit ordering operator or modify the query.
 --
+-- Tests for record_{eq,cmp}
+--
+create type testtype1 as (a int, b int);
+-- all true
+select row(1, 2)::testtype1 < row(1, 3)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 2)::testtype1 <= row(1, 3)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 2)::testtype1 = row(1, 2)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 2)::testtype1 <> row(1, 3)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 3)::testtype1 >= row(1, 2)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 3)::testtype1 > row(1, 2)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+-- all false
+select row(1, -2)::testtype1 < row(1, -3)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -2)::testtype1 <= row(1, -3)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -2)::testtype1 = row(1, -3)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -2)::testtype1 <> row(1, -2)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -3)::testtype1 >= row(1, -2)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -3)::testtype1 > row(1, -2)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+-- true, but see *< below
+select row(1, -2)::testtype1 < row(1, 3)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+-- mismatches
+create type testtype3 as (a int, b text);
+select row(1, 2)::testtype1 < row(1, 'abc')::testtype3;
+ERROR:  cannot compare dissimilar column types integer and text at record column 2
+select row(1, 2)::testtype1 <> row(1, 'abc')::testtype3;
+ERROR:  cannot compare dissimilar column types integer and text at record column 2
+create type testtype5 as (a int);
+select row(1, 2)::testtype1 < row(1)::testtype5;
+ERROR:  cannot compare record types with different numbers of columns
+select row(1, 2)::testtype1 <> row(1)::testtype5;
+ERROR:  cannot compare record types with different numbers of columns
+-- non-comparable types
+create type testtype6 as (a int, b point);
+select row(1, '(1,2)')::testtype6 < row(1, '(1,3)')::testtype6;
+ERROR:  could not identify a comparison function for type point
+select row(1, '(1,2)')::testtype6 <> row(1, '(1,3)')::testtype6;
+ERROR:  could not identify an equality operator for type point
+drop type testtype1, testtype3, testtype5, testtype6;
+--
+-- Tests for record_image_{eq,cmp}
+--
+create type testtype1 as (a int, b int);
+-- all true
+select row(1, 2)::testtype1 *< row(1, 3)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 2)::testtype1 *<= row(1, 3)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 2)::testtype1 *= row(1, 2)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 2)::testtype1 *<> row(1, 3)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 3)::testtype1 *>= row(1, 2)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 3)::testtype1 *> row(1, 2)::testtype1;
+ ?column? 
+----------
+ t
+(1 row)
+
+-- all false
+select row(1, -2)::testtype1 *< row(1, -3)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -2)::testtype1 *<= row(1, -3)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -2)::testtype1 *= row(1, -3)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -2)::testtype1 *<> row(1, -2)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -3)::testtype1 *>= row(1, -2)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, -3)::testtype1 *> row(1, -2)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+-- This returns the "wrong" order because record_image_cmp works on
+-- unsigned datums without knowing about the actual data type.
+select row(1, -2)::testtype1 *< row(1, 3)::testtype1;
+ ?column? 
+----------
+ f
+(1 row)
+
+-- other types
+create type testtype2 as (a smallint, b bool);  -- byval different sizes
+select row(1, true)::testtype2 *< row(2, true)::testtype2;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(-2, true)::testtype2 *< row(-1, true)::testtype2;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(0, false)::testtype2 *< row(0, true)::testtype2;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(0, false)::testtype2 *<> row(0, true)::testtype2;
+ ?column? 
+----------
+ t
+(1 row)
+
+create type testtype3 as (a int, b text);  -- variable length
+select row(1, 'abc')::testtype3 *< row(1, 'abd')::testtype3;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 'abc')::testtype3 *< row(1, 'abcd')::testtype3;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, 'abc')::testtype3 *> row(1, 'abd')::testtype3;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, 'abc')::testtype3 *<> row(1, 'abd')::testtype3;
+ ?column? 
+----------
+ t
+(1 row)
+
+create type testtype4 as (a int, b point);  -- by ref, fixed length
+select row(1, '(1,2)')::testtype4 *< row(1, '(1,3)')::testtype4;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, '(1,2)')::testtype4 *<> row(1, '(1,3)')::testtype4;
+ ?column? 
+----------
+ t
+(1 row)
+
+-- mismatches
+select row(1, 2)::testtype1 *< row(1, 'abc')::testtype3;
+ERROR:  cannot compare dissimilar column types integer and text at record column 2
+select row(1, 2)::testtype1 *<> row(1, 'abc')::testtype3;
+ERROR:  cannot compare dissimilar column types integer and text at record column 2
+create type testtype5 as (a int);
+select row(1, 2)::testtype1 *< row(1)::testtype5;
+ERROR:  cannot compare record types with different numbers of columns
+select row(1, 2)::testtype1 *<> row(1)::testtype5;
+ERROR:  cannot compare record types with different numbers of columns
+-- non-comparable types
+create type testtype6 as (a int, b point);
+select row(1, '(1,2)')::testtype6 *< row(1, '(1,3)')::testtype6;
+ ?column? 
+----------
+ t
+(1 row)
+
+select row(1, '(1,2)')::testtype6 *>= row(1, '(1,3)')::testtype6;
+ ?column? 
+----------
+ f
+(1 row)
+
+select row(1, '(1,2)')::testtype6 *<> row(1, '(1,3)')::testtype6;
+ ?column? 
+----------
+ t
+(1 row)
+
+drop type testtype1, testtype2, testtype3, testtype4, testtype5, testtype6;
+--
 -- Test case derived from bug #5716: check multiple uses of a rowtype result
 --
 BEGIN;