-- It's strict
SELECT 't1', ST_OrientedEnvelope(NULL::geometry) IS NULL;
-- Empty polygon on empty inputs
SELECT 't2', ST_Equals(ST_OrientedEnvelope('POINT EMPTY'), 'POLYGON EMPTY'::geometry);
-- SRID is preserved
SELECT 't3', ST_SRID(ST_OrientedEnvelope('SRID=32611;POINT(4021690.58034526 6040138.01373556)')) = 32611;
-- Can return Point or LineString on degenerate inputs
SELECT 't4', ST_Equals('LINESTRING (-1 -1, 2 2)', ST_OrientedEnvelope('MULTIPOINT ((0 0), (-1 -1), (2 2))'));
SELECT 't5', ST_Equals('POINT (0.9625 2)', ST_OrientedEnvelope('POINT (0.9625 2)'));
-- Also works for normal inputs
SELECT 't6', ST_Equals('POLYGON ((3 2, 2.88 2.16, -1.12 -0.84, -1 -1, 3 2))', ST_OrientedEnvelope('MULTIPOINT ((0 0), (-1 -1), (3 2))'));

