def test_serialization_respects_type_inheritance(self):
"""Test that the serialization type of an object is inferred by
inheritance, like the behavior of the ``isinstance`` built-in
function, not by checking strict type equality."""
TupleLike = namedtuple("TupleLike", ["spam", "ham", "eggs"])
tuple_like = TupleLike(spam=1, ham=2, eggs=3)
computed = typedbytes.dumps(tuple_like)
expected = typedbytes.dumps(tuple(tuple_like))
# tuple_like is an instance of tuple, so we expect it to be
# serialized exactly like a "normal" tuple.
self.assertEqual(expected, computed)
def test_NaN_round_trip(self):
obj = float('nan')
self.assertTrue(isnan(typedbytes.loads(typedbytes.dumps(obj))))
