typing: Add more tests for TypeVar #104571
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During the PEP 695 implementation at one point I made TypeVar.__name__ return garbage, and all of test_typing passed. So I decided to add a few more tests. In the process I discovered a minor incompatibility from the C implementation of TypeVar: empty constraints were returned as None instead of an empty tuple.
JelleZijlstra
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gvanrossum,
Fidget-Spinner,
AlexWaygood and
markshannon
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AlexWaygood
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May 17, 2023
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Thanks @JelleZijlstra for the PR 🌮🎉.. I'm working now to backport this PR to: 3.11. |
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Sorry, @JelleZijlstra, I could not cleanly backport this to |
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GH-104577 is a backport of this pull request to the 3.11 branch. |
JelleZijlstra
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May 17, 2023
During the PEP 695 implementation at one point I made TypeVar.__name__ return garbage, and all of test_typing passed. So I decided to add a few more tests. In the process I discovered a minor incompatibility from the C implementation of TypeVar: empty constraints were returned as None instead of an empty tuple.. (cherry picked from commit 2693194) Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
JelleZijlstra
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May 17, 2023
During the PEP 695 implementation at one point I made TypeVar.__name__ return garbage, and all of test_typing passed. So I decided to add a few more tests. (cherry picked from commit 2693194) Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
carljm
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May 17, 2023
* main: (26 commits) pythonGH-101520: Move tracemalloc functionality into core, leaving interface in Modules. (python#104508) typing: Add more tests for TypeVar (python#104571) pythongh-104572: Improve error messages for invalid constructs in PEP 695 contexts (python#104573) typing: Use PEP 695 syntax in typing.py (python#104553) pythongh-102153: Start stripping C0 control and space chars in `urlsplit` (python#102508) pythongh-104469: Update README.txt for _testcapi (pythongh-104529) pythonGH-103092: isolate `_elementtree` (python#104561) pythongh-104050: Add typing to Argument Clinic converters (python#104547) pythonGH-103906: Remove immortal refcounting in the interpreter (pythonGH-103909) pythongh-87474: Fix file descriptor leaks in subprocess.Popen (python#96351) pythonGH-103092: isolate `pyexpat` (python#104506) pythongh-75367: Fix data descriptor detection in inspect.getattr_static (python#104517) pythongh-104050: Add more annotations to `Tools/clinic.py` (python#104544) pythongh-104555: Fix isinstance() and issubclass() for runtime-checkable protocols that use PEP 695 (python#104556) pythongh-103865: add monitoring support to LOAD_SUPER_ATTR (python#103866) CODEOWNERS: Assign new PEP 695 files to myself (python#104551) pythonGH-104510: Fix refleaks in `_io` base types (python#104516) pythongh-104539: Fix indentation error in logging.config.rst (python#104545) pythongh-104050: Don't star-import 'types' in Argument Clinic (python#104543) pythongh-104050: Add basic typing to CConverter in clinic.py (python#104538) ...
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JelleZijlstra
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May 18, 2023
During the PEP 695 implementation at one point I made TypeVar.__name__ return garbage, and all of test_typing passed. So I decided to add a few more tests. In the process I discovered a minor incompatibility from the C implementation of TypeVar: empty constraints were returned as None instead of an empty tuple.
JelleZijlstra
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May 21, 2023
I started out trying to backport python/cpython#104571, but realized that it makes sense to backport CPython's whole TypeVarTests class since we now have our own implementation of TypeVar. I dropped test_var_substitution and test_bad_var_substitution since they rely on the internal __typing_subst__ method, and the type substitution logic is generally very hard to get precisely the same across versions.
JelleZijlstra
added a commit
to python/typing_extensions
that referenced
this pull request
May 21, 2023
I started out trying to backport python/cpython#104571, but realized that it makes sense to backport CPython's whole TypeVarTests class since we now have our own implementation of TypeVar. I dropped test_var_substitution and test_bad_var_substitution since they rely on the internal __typing_subst__ method, and the type substitution logic is generally very hard to get precisely the same across versions.
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During the PEP 695 implementation at one point I made
TypeVar.__name__return garbage, and all of test_typing passed.So I decided to add a few more tests. In the process I discovered
a minor incompatibility from the C implementation of TypeVar:
empty constraints were returned as None instead of an empty tuple.