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from collections import deque, defaultdict
from collections.abc import Set
from typing import (
Dict,
List,
Tuple,
FrozenSet,
Deque,
DefaultDict,
Type,
AbstractSet,
Set as TypingSet
)
from unittest import TestCase
from typish import get_origin, get_alias
class Union:
"""To shadow typing.Union."""
class MetaMock(type):
__name__ = 'list'
__args__ = (str,)
class ListMock(metaclass=MetaMock):
...
class TestOriginAndAlias(TestCase):
def test_get_origin(self):
self.assertEqual(list, get_origin(List[int]))
self.assertEqual(tuple, get_origin(Tuple[int, ...]))
self.assertEqual(dict, get_origin(Dict[str, int]))
self.assertEqual(set, get_origin(TypingSet))
self.assertEqual(deque, get_origin(Deque))
self.assertEqual(defaultdict, get_origin(DefaultDict))
self.assertEqual(type, get_origin(Type[int]))
self.assertEqual(Set, get_origin(AbstractSet))
self.assertIn('test_origin_and_alias', str(get_origin(Union)))
try:
self.assertEqual(dict, get_origin(dict[str, str]))
self.assertEqual(list, get_origin(list[int]))
except TypeError as err:
... # On <3.9
def test_get_alias(self):
self.assertEqual(List, get_alias(list))
self.assertEqual(Tuple, get_alias(tuple))
self.assertEqual(Dict, get_alias(dict))
self.assertEqual(TypingSet, get_alias(set))
self.assertEqual(FrozenSet, get_alias(frozenset))
self.assertEqual(Deque, get_alias(deque))
self.assertEqual(DefaultDict, get_alias(defaultdict))
self.assertEqual(Type, get_alias(type))
self.assertEqual(AbstractSet, get_alias(Set))
self.assertEqual(List, get_alias(List))
self.assertEqual(Dict, get_alias(Dict))
def test_get_alias_from_parameterized_standard_list(self):
self.assertEqual(List[str], get_alias(ListMock))