Stabilize jsonb_path_query test case.

An operation like '12:34:56'::time_tz takes the UTC offset from
the prevailing time zone, which means that the results change
across DST transitions.  One of the test cases added in ed055d249
failed to consider this.

Per report from Bernhard Wiedemann.  Back-patch to v17, as the
test case was.

Discussion: https://postgr.es/m/ba8e1bc0-8a99-45b7-8397-3f2e94415e03@suse.de

diff --git a/src/test/regress/expected/jsonb_jsonpath.out b/src/test/regress/expected/jsonb_jsonpath.out
index 57c117ea5806441119a8449e06f63029b61de7bd..8cf6ecfc7f8a100284580b7ee9c32239b4fe64b6 100644 (file)
--- a/src/test/regress/expected/jsonb_jsonpath.out
+++ b/src/test/regress/expected/jsonb_jsonpath.out
@@ -2634,12 +2634,16 @@ select jsonb_path_query('"12:34:56 +5:30"', '$.time_tz().string()');
  "12:34:56+05:30"
 (1 row)
 
+-- this timetz usage will absorb the UTC offset of the current timezone setting
+begin;
+set local timezone = 'UTC-10';
 select jsonb_path_query_tz('"12:34:56"', '$.time_tz().string()');
  jsonb_path_query_tz 
 ---------------------
- "12:34:56-07:00"
+ "12:34:56+10:00"
 (1 row)
 
+rollback;
 select jsonb_path_query('"12:34:56"', '$.time().string()');
  jsonb_path_query 
 ------------------

diff --git a/src/test/regress/sql/jsonb_jsonpath.sql b/src/test/regress/sql/jsonb_jsonpath.sql
index c647af55e9412daba75cbc044a0bcffd306be754..acb508c0dd2f9c15e4a1533942d35d61fba82e52 100644 (file)
--- a/src/test/regress/sql/jsonb_jsonpath.sql
+++ b/src/test/regress/sql/jsonb_jsonpath.sql
@@ -596,7 +596,11 @@ select jsonb_path_query_tz('"2023-08-15 12:34:56"', '$.timestamp_tz().string()')
 select jsonb_path_query('"2023-08-15 12:34:56 +5:30"', '$.timestamp_tz().string()');
 select jsonb_path_query('"2023-08-15 12:34:56"', '$.timestamp().string()');
 select jsonb_path_query('"12:34:56 +5:30"', '$.time_tz().string()');
+-- this timetz usage will absorb the UTC offset of the current timezone setting
+begin;
+set local timezone = 'UTC-10';
 select jsonb_path_query_tz('"12:34:56"', '$.time_tz().string()');
+rollback;
 select jsonb_path_query('"12:34:56"', '$.time().string()');
 select jsonb_path_query('"2023-08-15"', '$.date().string()');