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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2023-05-24 09:05:34 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-05-24 09:05:34 (GMT) |
| commit | d10d1e3b10737a8426f92221e2788e40ad05b4e0 (patch) | |
| tree | 66a9a80efe065d5ebdb34170a91a00b3c7804cec /Lib/test | |
| parent | b719dd8725a820a1af4b76c30ae87c23d8db68c0 (diff) | |
| download | cpython-d10d1e3b10737a8426f92221e2788e40ad05b4e0.zip cpython-d10d1e3b10737a8426f92221e2788e40ad05b4e0.tar.gz cpython-d10d1e3b10737a8426f92221e2788e40ad05b4e0.tar.bz2 | |
[3.12] gh-104797: Allow Protocols to inherit from collections.abc.Buffer (GH-104827) (#104841)
gh-104797: Allow Protocols to inherit from collections.abc.Buffer (GH-104827)
(cherry picked from commit c0ab7d401c736c37bf4462eef7c7d69fef8fab93)
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_typing.py | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py index 9a3e642..a3fad6f 100644 --- a/Lib/test/test_typing.py +++ b/Lib/test/test_typing.py @@ -3546,6 +3546,22 @@ class ProtocolTests(BaseTestCase): self.assertIsSubclass(B, Custom) self.assertNotIsSubclass(A, Custom) + @runtime_checkable + class ReleasableBuffer(collections.abc.Buffer, Protocol): + def __release_buffer__(self, mv: memoryview) -> None: ... + + class C: pass + class D: + def __buffer__(self, flags: int) -> memoryview: + return memoryview(b'') + def __release_buffer__(self, mv: memoryview) -> None: + pass + + self.assertIsSubclass(D, ReleasableBuffer) + self.assertIsInstance(D(), ReleasableBuffer) + self.assertNotIsSubclass(C, ReleasableBuffer) + self.assertNotIsInstance(C(), ReleasableBuffer) + def test_builtin_protocol_allowlist(self): with self.assertRaises(TypeError): class CustomProtocol(TestCase, Protocol): |