# name: test/sql/timezone/icu_calendar_operations.test
# description: Test the ICU calendar interface
# group: [timezone]

require icu

# Normalise the testing locale
statement ok
SET TimeZone = 'UTC';

# Test intervals for lunar calendars
foreach cal hebrew coptic ethiopic

statement ok
SET Calendar = '${cal}';

statement error
select age('2020-01-01'::timestamptz);
----
INTERVALs do not work with 13 month calendars. Try using DATE_DIFF instead.

statement error
select '2020-01-01'::timestamptz + interval '380 days'
----
INTERVALs do not work with 13 month calendars. Try using DATE_DIFF instead.

statement error
select '2021-01-01'::timestamptz - interval '380 days'
----
INTERVALs do not work with 13 month calendars. Try using DATE_DIFF instead.

statement error
select 
	'2020-01-01'::timestamptz as start_date,
	'2021-01-01'::timestamptz as end_date,
	age(end_date, start_date) as delta;
----
INTERVALs do not work with 13 month calendars. Try using DATE_DIFF instead.

endloop