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import typing
from typing import Union
from unittest import TestCase
from typish import get_mro
class A:
...
class B(A):
...
class TestGetMRO(TestCase):
def test_get_mro(self):
mro_b = get_mro(B)
self.assertTupleEqual((B, A, object), mro_b)
def test_get_mro_union(self):
mro_u = get_mro(Union[int, str])
# Below is to stay compatible with Python 3.5+
super_cls = getattr(typing, '_GenericAlias',
getattr(typing, 'GenericMeta', None))
expected = (typing.Union, super_cls, object)
self.assertTupleEqual(expected, mro_u)
def test_get_mro_object(self):
mro_b = get_mro(B())
self.assertTupleEqual((B, A, object), mro_b)
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