Fix tests on Python 3.11 (#106)

Author: JelleZijlstra

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
         # Python version, because typing sometimes changed between bugfix releases.
         # For available versions, see:
         # https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json
-        python-version: ["3.7", "3.7.1", "3.8", "3.8.0", "3.9", "3.9.0", "3.10", "3.10.0", "3.11-dev", "pypy3.9"]
+        python-version: ["3.7", "3.7.1", "3.8", "3.8.0", "3.9", "3.9.0", "3.10", "3.10.0", "3.11", "3.11.0", "3.12-dev", "pypy3.9"]
 
     runs-on: ubuntu-20.04
 
@@ -31,7 +31,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: Test typing_extensions
-        continue-on-error: ${{ matrix.python-version == '3.11-dev' }}
+        continue-on-error: ${{ matrix.python-version == '3.12-dev' }}
         run: |
           # Be wary of running `pip install` here, since it becomes easy for us to
           # accidentally pick up typing_extensions as installed by a dependency

CHANGELOG.md

@@ -1,7 +1,12 @@
-# Release 4.4.1 (?)
+# Unreleased
 
 - Add better default value for TypeVar `default` parameter, PEP 696. Enables
   runtime check if `None` was passed as default. Patch by Marc Mueller (@cdce8p).
+- The `@typing_extensions.override` decorator now sets the `.__override__`
+  attribute. Patch by Steven Troxler.
+- Fix `get_type_hints()` on cross-module inherited `TypedDict` in 3.9 and 3.10.
+  Patch by Carl Meyer.
+- Add `frozen_default` parameter on `dataclass_transform`. Patch by Erik De Bonte.
 
 # Release 4.4.0 (October 6, 2022)
 

src/test_typing_extensions.py

@@ -3140,6 +3140,7 @@ def test_all_names_in___all__(self):
 
     def test_typing_extensions_defers_when_possible(self):
         exclude = {
+            'dataclass_transform',
             'overload',
             'ParamSpec',
             'Text',

src/typing_extensions.py

@@ -1998,7 +1998,8 @@ def int_or_str(arg: int | str) -> None:
         raise AssertionError("Expected code to be unreachable")
 
 
-if hasattr(typing, 'dataclass_transform'):
+if sys.version_info >= (3, 12):
+    # dataclass_transform exists in 3.11 but lacks the frozen_default parameter
     dataclass_transform = typing.dataclass_transform
 else:
     def dataclass_transform(