-- minProperties validation
-- longer is valid
SELECT is_jsonb_valid('{"minProperties":1}', '{"foo":1,"bar":2}');
 is_jsonb_valid 
----------------
 t
(1 row)

-- exact length is valid
SELECT is_jsonb_valid('{"minProperties":1}', '{"foo":1}');
 is_jsonb_valid 
----------------
 t
(1 row)

-- too short is invalid
SELECT is_jsonb_valid('{"minProperties":1}', '{}');
 is_jsonb_valid 
----------------
 f
(1 row)

-- ignores arrays
SELECT is_jsonb_valid('{"minProperties":1}', '[]');
 is_jsonb_valid 
----------------
 t
(1 row)

-- ignores strings
SELECT is_jsonb_valid('{"minProperties":1}', '""');
 is_jsonb_valid 
----------------
 t
(1 row)

-- ignores other non-objects
SELECT is_jsonb_valid('{"minProperties":1}', '12');
 is_jsonb_valid 
----------------
 t
(1 row)