# name: test/sql/timezone/disable_timestamptz_casts.test
# description: Test for disabling timestamp => timestamptz casts
# group: [timezone]

# Setting has no effect when ICU is not loaded as the two types are equivalent
statement ok
set disable_timestamptz_casts=false;

query I
select cast('2020-01-01T00:00:00'::timestamp as timestamptz)
----
2020-01-01 00:00:00+00

query I
select cast('2020-01-01T15:00:00+0000'::timestamptz as timestamp)
----
2020-01-01 15:00:00

statement ok
set disable_timestamptz_casts=true;

query I
select cast('2020-01-01T00:00:00'::timestamp as timestamptz)
----
2020-01-01 00:00:00+00

query I
select cast('2020-01-01T15:00:00+0000'::timestamptz as timestamp)
----
2020-01-01 15:00:00

# With ICU loaded, the casts are disabled in both directions when the flag is set.
require icu

statement ok
set calendar='gregorian';

statement ok
set TimeZone='America/Los_Angeles';

statement ok
set disable_timestamptz_casts=false;

query I
select cast('2020-01-01T00:00:00'::timestamp as timestamptz)
----
2020-01-01 00:00:00-08

statement ok
set disable_timestamptz_casts=true;

statement error
select cast('2020-01-01T00:00:00'::timestamp as timestamptz)
----
Casting from TIMESTAMP to TIMESTAMP WITH TIME ZONE without an explicit time zone has been disabled

statement error
select cast('2020-01-01T15:00:00+0000'::timestamptz as timestamp)
----
Casting from TIMESTAMP WITH TIME ZONE to TIMESTAMP without an explicit time zone has been disabled