mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-10 03:49:18 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

[3.12] gh-112618: Make Annotated cache typed (#112619) (#112628)

Browse source
This commit is contained in:
Alex Waygood 2023-12-03 00:41:03 +00:00 • committed by GitHub
parent e3c7947770
commit 2a378ca2ef
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 43 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

34
Lib/test/test_typing.py
View file

@ -8403,6 +8403,40 @@ class AnnotatedTests(BaseTestCase):
self.assertEqual(X.__mro__, (X, int, object),
"Annotated should be transparent.")
def test_annotated_cached_with_types(self):
class A(str): ...
class B(str): ...
field_a1 = Annotated[str, A("X")]
field_a2 = Annotated[str, B("X")]
a1_metadata = field_a1.__metadata__[0]
a2_metadata = field_a2.__metadata__[0]
self.assertIs(type(a1_metadata), A)
self.assertEqual(a1_metadata, A("X"))
self.assertIs(type(a2_metadata), B)
self.assertEqual(a2_metadata, B("X"))
self.assertIsNot(type(a1_metadata), type(a2_metadata))
field_b1 = Annotated[str, A("Y")]
field_b2 = Annotated[str, B("Y")]
b1_metadata = field_b1.__metadata__[0]
b2_metadata = field_b2.__metadata__[0]
self.assertIs(type(b1_metadata), A)
self.assertEqual(b1_metadata, A("Y"))
self.assertIs(type(b2_metadata), B)
self.assertEqual(b2_metadata, B("Y"))
self.assertIsNot(type(b1_metadata), type(b2_metadata))
field_c1 = Annotated[int, 1]
field_c2 = Annotated[int, 1.0]
field_c3 = Annotated[int, True]
self.assertIs(type(field_c1.__metadata__[0]), int)
self.assertIs(type(field_c2.__metadata__[0]), float)
self.assertIs(type(field_c3.__metadata__[0]), bool)
class TypeAliasTests(BaseTestCase):
def test_canonical_usage_with_variable_annotation(self):