From bc69f0b356f1820fedcf254ccd6553fbca7d0cc2 Mon Sep 17 00:00:00 2001
From: chagelo <changeto104@gmail.com>
Date: Thu, 21 Nov 2024 17:36:20 +0800
Subject: [PATCH] * add `timezone(zone, timestamptz)` testcases

Signed-off-by: chagelo <changeto104@gmail.com>
---
 .../regress/data/expected/timestamptz.out     | 187 ++++++++++++++++++
 src/tests/regress/data/sql/timestamptz.sql    |  36 ++++
 2 files changed, 223 insertions(+)

diff --git a/src/tests/regress/data/expected/timestamptz.out b/src/tests/regress/data/expected/timestamptz.out
index 9b88cdf1916a1..29fc1c4b089ca 100644
--- a/src/tests/regress/data/expected/timestamptz.out
+++ b/src/tests/regress/data/expected/timestamptz.out
@@ -2636,6 +2636,193 @@ SELECT '2014-10-26 02:00:00'::timestamp AT TIME ZONE 'MSK';
  2014-10-25 23:00:00+00
 (1 row)
 
+SELECT timezone('Asia/Shanghai', '2024-11-20 20:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2024-11-21 04:00:00
+(1 row)
+
+SELECT timezone('Asia/Shanghai', '2023-02-28 20:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2023-03-01 04:00:00
+(1 row)
+
+SELECT timezone('Asia/Shanghai', '2024-02-28 20:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2024-02-29 04:00:00
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2011-03-26 22:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 01:00:00
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2011-03-26 22:59:59 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 01:59:59
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2011-03-26 23:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 03:00:00
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2011-03-26 23:00:01 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 03:00:01
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2011-03-27 01:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 05:00:00
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2011-03-27 02:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 06:00:00
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2011-03-27 02:59:59 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 06:59:59
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2011-03-27 03:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 07:00:00
+(1 row)
+
+SELECT timezone('MSK', '2011-03-26 22:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 01:00:00 
+(1 row)
+
+SELECT timezone('MSK', '2011-03-26 22:59:59 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 01:59:59
+(1 row)
+
+SELECT timezone('MSK', '2011-03-26 23:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 03:00:00
+(1 row)
+
+SELECT timezone('MSK', '2011-03-26 23:00:01 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 03:00:01
+(1 row)
+
+SELECT timezone('MSK', '2011-03-27 01:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 05:00:00
+(1 row)
+
+SELECT timezone('MSK', '2011-03-27 02:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 06:00:00
+(1 row)
+
+SELECT timezone('MSK', '2011-03-27 02:59:59 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 06:59:59
+(1 row)
+
+SELECT timezone('MSK', '2011-03-27 03:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2011-03-27 07:00:00
+(1 row)
+
+
+SELECT timezone('Europe/Moscow', '2014-10-25 21:59:59 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 01:59:59
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2014-10-25 22:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 01:00:00
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2014-10-25 22:59:59 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 01:59:59
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2014-10-25 23:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 02:00:00
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2014-10-25 23:00:01 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 02:00:01
+(1 row)
+
+SELECT timezone('Europe/Moscow', '2014-10-26 02:00:01 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 05:00:01
+(1 row)
+
+SELECT timezone('MSK', '2014-10-25 21:59:59 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 01:59:59
+(1 row)
+
+SELECT timezone('MSK', '2014-10-25 22:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 01:00:00
+(1 row)
+
+SELECT timezone('MSK', '2014-10-25 22:59:59 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 01:59:59
+(1 row)
+
+SELECT timezone('MSK', '2014-10-25 23:00:00 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 02:00:00
+(1 row)
+
+SELECT timezone('MSK', '2014-10-25 23:00:01 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 02:00:01
+(1 row)
+
+SELECT timezone('MSK', '2014-10-26 02:00:01 UTC'::timestamptz);
+      timezone       
+---------------------
+ 2014-10-26 05:00:01
+(1 row)
+
 SELECT make_timestamptz(2014, 10, 26, 0, 0, 0, 'MSK');
     make_timestamptz    
 ------------------------
diff --git a/src/tests/regress/data/sql/timestamptz.sql b/src/tests/regress/data/sql/timestamptz.sql
index ca2877024d58d..296e5021a8494 100644
--- a/src/tests/regress/data/sql/timestamptz.sql
+++ b/src/tests/regress/data/sql/timestamptz.sql
@@ -480,6 +480,42 @@ SELECT '2014-10-26 01:00:00'::timestamp AT TIME ZONE 'MSK';
 SELECT '2014-10-26 01:00:01'::timestamp AT TIME ZONE 'MSK';
 SELECT '2014-10-26 02:00:00'::timestamp AT TIME ZONE 'MSK';
 
+SELECT timezone('Asia/Shanghai', '2024-11-20 20:00:00 UTC'::timestamptz);
+SELECT timezone('Asia/Shanghai', '2023-02-28 20:00:00 UTC'::timestamptz);
+SELECT timezone('Asia/Shanghai', '2024-02-28 20:00:00 UTC'::timestamptz);
+
+SELECT timezone('Europe/Moscow', '2011-03-26 22:00:00 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2011-03-26 22:59:59 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2011-03-26 23:00:00 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2011-03-26 23:00:01 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2011-03-27 01:00:00 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2011-03-27 02:00:00 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2011-03-27 02:59:59 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2011-03-27 03:00:00 UTC'::timestamptz);
+
+SELECT timezone('MSK', '2011-03-26 22:00:00 UTC'::timestamptz);
+SELECT timezone('MSK', '2011-03-26 22:59:59 UTC'::timestamptz);
+SELECT timezone('MSK', '2011-03-26 23:00:00 UTC'::timestamptz);
+SELECT timezone('MSK', '2011-03-26 23:00:01 UTC'::timestamptz);
+SELECT timezone('MSK', '2011-03-27 01:00:00 UTC'::timestamptz);
+SELECT timezone('MSK', '2011-03-27 02:00:00 UTC'::timestamptz);
+SELECT timezone('MSK', '2011-03-27 02:59:59 UTC'::timestamptz);
+SELECT timezone('MSK', '2011-03-27 03:00:00 UTC'::timestamptz);
+
+SELECT timezone('Europe/Moscow', '2014-10-25 21:59:59 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2014-10-25 22:00:00 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2014-10-25 22:59:59 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2014-10-25 23:00:00 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2014-10-25 23:00:01 UTC'::timestamptz);
+SELECT timezone('Europe/Moscow', '2014-10-26 02:00:01 UTC'::timestamptz);
+
+SELECT timezone('MSK', '2014-10-25 21:59:59 UTC'::timestamptz);
+SELECT timezone('MSK', '2014-10-25 22:00:00 UTC'::timestamptz);
+SELECT timezone('MSK', '2014-10-25 22:59:59 UTC'::timestamptz);
+SELECT timezone('MSK', '2014-10-25 23:00:00 UTC'::timestamptz);
+SELECT timezone('MSK', '2014-10-25 23:00:01 UTC'::timestamptz);
+SELECT timezone('MSK', '2014-10-26 02:00:01 UTC'::timestamptz);
+
 SELECT make_timestamptz(2014, 10, 26, 0, 0, 0, 'MSK');
 SELECT make_timestamptz(2014, 10, 26, 1, 0, 0, 'MSK');