From 9bae7e4cde7c9786ee61dac4a3e032b346350a88 Mon Sep 17 00:00:00 2001
From: Fujii Masao <fujii@postgresql.org>
Date: Tue, 30 Jun 2020 23:55:07 +0900
Subject: Add +(pg_lsn,numeric) and -(pg_lsn,numeric) operators.

By using these operators, the number of bytes can be added into and
subtracted from LSN.

Bump catalog version.

Author: Fujii Masao
Reviewed-by: Kyotaro Horiguchi, Michael Paquier, Asif Rehman
Discussion: https://postgr.es/m/ed9f7f74-e996-67f8-554a-52ebd3779b3b@oss.nttdata.com
---
 src/test/regress/expected/numeric.out | 27 +++++++++++++++++++
 src/test/regress/expected/pg_lsn.out  | 50 +++++++++++++++++++++++++++++++++++
 src/test/regress/sql/numeric.sql      | 10 +++++++
 src/test/regress/sql/pg_lsn.sql       | 11 ++++++++
 4 files changed, 98 insertions(+)

(limited to 'src/test')

diff --git a/src/test/regress/expected/numeric.out b/src/test/regress/expected/numeric.out
index 2f3ecb50a73..81a0c5d40f7 100644
--- a/src/test/regress/expected/numeric.out
+++ b/src/test/regress/expected/numeric.out
@@ -2348,3 +2348,30 @@ SELECT -4!;
 ERROR:  factorial of a negative number is undefined
 SELECT factorial(-4);
 ERROR:  factorial of a negative number is undefined
+--
+-- Tests for pg_lsn()
+--
+SELECT pg_lsn(23783416::numeric);
+  pg_lsn   
+-----------
+ 0/16AE7F8
+(1 row)
+
+SELECT pg_lsn(0::numeric);
+ pg_lsn 
+--------
+ 0/0
+(1 row)
+
+SELECT pg_lsn(18446744073709551615::numeric);
+      pg_lsn       
+-------------------
+ FFFFFFFF/FFFFFFFF
+(1 row)
+
+SELECT pg_lsn(-1::numeric);
+ERROR:  pg_lsn out of range
+SELECT pg_lsn(18446744073709551616::numeric);
+ERROR:  pg_lsn out of range
+SELECT pg_lsn('NaN'::numeric);
+ERROR:  cannot convert NaN to pg_lsn
diff --git a/src/test/regress/expected/pg_lsn.out b/src/test/regress/expected/pg_lsn.out
index 64d41dfdad2..99a748a6a76 100644
--- a/src/test/regress/expected/pg_lsn.out
+++ b/src/test/regress/expected/pg_lsn.out
@@ -71,6 +71,56 @@ SELECT '0/16AE7F8'::pg_lsn - '0/16AE7F7'::pg_lsn;
         1
 (1 row)
 
+SELECT '0/16AE7F7'::pg_lsn + 16::numeric;
+ ?column?  
+-----------
+ 0/16AE807
+(1 row)
+
+SELECT 16::numeric + '0/16AE7F7'::pg_lsn;
+ ?column?  
+-----------
+ 0/16AE807
+(1 row)
+
+SELECT '0/16AE7F7'::pg_lsn - 16::numeric;
+ ?column?  
+-----------
+ 0/16AE7E7
+(1 row)
+
+SELECT 'FFFFFFFF/FFFFFFFE'::pg_lsn + 1::numeric;
+     ?column?      
+-------------------
+ FFFFFFFF/FFFFFFFF
+(1 row)
+
+SELECT 'FFFFFFFF/FFFFFFFE'::pg_lsn + 2::numeric; -- out of range error
+ERROR:  pg_lsn out of range
+SELECT '0/1'::pg_lsn - 1::numeric;
+ ?column? 
+----------
+ 0/0
+(1 row)
+
+SELECT '0/1'::pg_lsn - 2::numeric; -- out of range error
+ERROR:  pg_lsn out of range
+SELECT '0/0'::pg_lsn + ('FFFFFFFF/FFFFFFFF'::pg_lsn - '0/0'::pg_lsn);
+     ?column?      
+-------------------
+ FFFFFFFF/FFFFFFFF
+(1 row)
+
+SELECT 'FFFFFFFF/FFFFFFFF'::pg_lsn - ('FFFFFFFF/FFFFFFFF'::pg_lsn - '0/0'::pg_lsn);
+ ?column? 
+----------
+ 0/0
+(1 row)
+
+SELECT '0/16AE7F7'::pg_lsn + 'NaN'::numeric;
+ERROR:  cannot add NaN to pg_lsn
+SELECT '0/16AE7F7'::pg_lsn - 'NaN'::numeric;
+ERROR:  cannot subtract NaN from pg_lsn
 -- Check btree and hash opclasses
 EXPLAIN (COSTS OFF)
 SELECT DISTINCT (i || '/' || j)::pg_lsn f
diff --git a/src/test/regress/sql/numeric.sql b/src/test/regress/sql/numeric.sql
index 1332a9cf07a..5dc80f686f4 100644
--- a/src/test/regress/sql/numeric.sql
+++ b/src/test/regress/sql/numeric.sql
@@ -1122,3 +1122,13 @@ SELECT 100000!;
 SELECT 0!;
 SELECT -4!;
 SELECT factorial(-4);
+
+--
+-- Tests for pg_lsn()
+--
+SELECT pg_lsn(23783416::numeric);
+SELECT pg_lsn(0::numeric);
+SELECT pg_lsn(18446744073709551615::numeric);
+SELECT pg_lsn(-1::numeric);
+SELECT pg_lsn(18446744073709551616::numeric);
+SELECT pg_lsn('NaN'::numeric);
diff --git a/src/test/regress/sql/pg_lsn.sql b/src/test/regress/sql/pg_lsn.sql
index 2c143c82ffe..615368ba960 100644
--- a/src/test/regress/sql/pg_lsn.sql
+++ b/src/test/regress/sql/pg_lsn.sql
@@ -27,6 +27,17 @@ SELECT '0/16AE7F7' < '0/16AE7F8'::pg_lsn;
 SELECT '0/16AE7F8' > pg_lsn '0/16AE7F7';
 SELECT '0/16AE7F7'::pg_lsn - '0/16AE7F8'::pg_lsn;
 SELECT '0/16AE7F8'::pg_lsn - '0/16AE7F7'::pg_lsn;
+SELECT '0/16AE7F7'::pg_lsn + 16::numeric;
+SELECT 16::numeric + '0/16AE7F7'::pg_lsn;
+SELECT '0/16AE7F7'::pg_lsn - 16::numeric;
+SELECT 'FFFFFFFF/FFFFFFFE'::pg_lsn + 1::numeric;
+SELECT 'FFFFFFFF/FFFFFFFE'::pg_lsn + 2::numeric; -- out of range error
+SELECT '0/1'::pg_lsn - 1::numeric;
+SELECT '0/1'::pg_lsn - 2::numeric; -- out of range error
+SELECT '0/0'::pg_lsn + ('FFFFFFFF/FFFFFFFF'::pg_lsn - '0/0'::pg_lsn);
+SELECT 'FFFFFFFF/FFFFFFFF'::pg_lsn - ('FFFFFFFF/FFFFFFFF'::pg_lsn - '0/0'::pg_lsn);
+SELECT '0/16AE7F7'::pg_lsn + 'NaN'::numeric;
+SELECT '0/16AE7F7'::pg_lsn - 'NaN'::numeric;
 
 -- Check btree and hash opclasses
 EXPLAIN (COSTS OFF)
-- 
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