set client_min_messages to 'error';
drop extension if exists "json_accessors" cascade;
create extension "json_accessors";
set client_min_messages to 'notice';

\t on
\pset format unaligned

-- qq
select json_get_text('{"foo":"qq", "bar": true}', 'foo');
-- t
select json_get_boolean('{"foo":"qq", "bar": true}', 'bar');
-- 42
select json_get_int('{"baz": 42, "boo": 42.424242}', 'baz');
-- 42
select json_get_bigint('{"baz": 42, "boo": 42.424242}', 'baz');
-- 9223372036854
select json_get_bigint('{"baz": 9223372036854, "boo": 42.424242}', 'baz');
-- 42.424242
select json_get_numeric('{"baz": 42, "boo": 42.424242}', 'boo');
-- t
select json_get_text('{"foo":"qq", "bar": true}', 'noneofthese') is null;
-- t
select json_get_text('{"foo":null, "bar": true}', 'foo') is null;

-- Tue Dec 01 01:23:45 2009
select json_get_timestamp('{"foo":"qq", "bar": "2009-12-01 01:23:45"}', 'bar');
set time zone EST;
-- 2009-12-01 01:23:45
select to_char(json_get_timestamp('{"foo":"qq", "bar": "2009-12-01 01:23:45"}', 'bar'), 'YYYY-MM-DD HH:MI:SSTZ');
set time zone "Europe/Moscow";
-- 2009-12-01 01:23:45
select to_char(json_get_timestamp('{"foo":"qq", "bar": "2009-12-01 01:23:45"}', 'bar'), 'YYYY-MM-DD HH:MI:SSTZ');

-- {foo,bar}
select json_array_to_text_array('["foo", "bar"]');
-- {t,f}
select json_array_to_boolean_array('[true, false]');
-- {42,43}
select json_array_to_int_array('[42, 43]');
-- {42,9223372036854}
select json_array_to_bigint_array('[42, 9223372036854]');
-- {42.4242,43.4343}
select json_array_to_numeric_array('[42.4242,43.4343]');
-- {"Tue Dec 01 01:23:45 2009","Sat Dec 01 01:23:45 2012"}
select json_array_to_timestamp_array('["2009-12-01 01:23:45", "2012-12-01 01:23:45"]');

-- {baz1,baz2,baz3}
select json_get_text_array('{"foo":"qq", "bar": ["baz1", "baz2", "baz3"]}', 'bar');
-- {t,f}
select json_get_boolean_array('{"foo":"qq", "bar": [true, false]}', 'bar');
-- {42,43}
select json_get_int_array('{"foo":"qq", "bar": [42, 43]}', 'bar');
-- {42,9223372036854}
select json_get_bigint_array('{"foo":"qq", "bar": [42, 9223372036854]}', 'bar');
-- {42.4242,43.4343}
select json_get_numeric_array('{"foo":"qq", "bar": [42.4242,43.4343]}', 'bar');
-- {"Tue Dec 01 01:23:45 2009","Sat Dec 01 01:23:45 2012"}
select json_get_timestamp_array('{"foo":"qq", "bar": ["2009-12-01 01:23:45", "2012-12-01 01:23:45"]}', 'bar');

-- {baz1,NULL,baz3}
select json_get_text_array('{"foo":"qq", "bar": ["baz1", null, "baz3"]}', 'bar');
-- {NULL,"Sat Dec 01 01:23:45 2012"}
select json_get_timestamp_array('{"foo":"qq", "bar": [null, "2012-12-01 01:23:45"]}', 'bar');

-- "qq"
select json_get_object('{"foo":"qq", "bar": ["baz1", "baz2", "baz3"]}', 'foo');
-- ["baz1","baz2","baz3"]
select json_get_object('{"foo":"qq", "bar": ["baz1", "baz2", "baz3"]}', 'bar');
-- {"baz1":"baz2"}
select json_get_object('{"foo":"qq", "bar": {"baz1": "baz2"}}', 'bar');
-- {baz1,baz2,baz3}
select json_array_to_text_array(json_get_object('{"foo":"qq", "bar": ["baz1", "baz2", "baz3"]}', 'bar'));
-- baz2
select (json_array_to_text_array(json_get_object('{"foo":"qq", "bar": ["baz1", "baz2", "baz3"]}', 'bar')))[2];

-- {"{\"foo\":42}","{\"bar\":[]}"}
select json_array_to_object_array('[{"foo":42}, {"bar":[]}]');
-- {}
select json_array_to_object_array('[]');
-- {"{\"foo\":42}","{\"bar\":[]}"}
select json_get_object_array('{"key" : [{"foo":42}, {"bar":[]}]}', 'key');

-- 0
select json_get_int('{"a": 0}', 'a');

-- 1
select json_get_int('{"a": 1}', 'a');

-- {foo,bar}
select json_get_object_keys('{"foo":"qq", "bar": ["baz1", "baz2", "baz3"]}');
-- {}
select json_get_object_keys('{}');

\t off
\pset format aligned