-- { echoOn }
SELECT readWKTLineString('LINESTRING (1 1, 2 2, 3 3, 1 1)');
SELECT toTypeName(readWKTLineString('LINESTRING (1 1, 2 2, 3 3, 1 1)'));
SELECT wkt(readWKTLineString('LINESTRING (1 1, 2 2, 3 3, 1 1)'));

-- Native Array(Tuple(Float64, Float64)) is threated as Ring, not as LineString.
WITH wkt(CAST([(1, 1), (2, 2), (3, 3)], 'Array(Tuple(Float64, Float64))')) as x
SELECT x, toTypeName(x), readWKTRing(x) as y, toTypeName(y);