gh-108303: Add Lib/test/test_cppext/ sub-directory (GH-108325)
* Move test_cppext to its own directory
* Rename setup_testcppext.py to setup.py
* Rename _testcppext.cpp to extension.cpp
* The source (extension.cpp) is now also copied by the test.
(cherry picked from commit 21dda09600)
Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-95299: Rework test_cppext.py to not invoke setup.py directly
* Add tests/cppextdata data to `TESTSUBDIRS`
* Revert "Add tests/cppextdata data to `TESTSUBDIRS`"
This reverts commit 635492e539.
* Revert "gh-95299: Rework test_cppext.py to not invoke setup.py directly"
This reverts commit 41c5a667b5.
* Build and install the extension in a temporary directory instead
* Pull in wheels for setuptools and wheel for testing extension builds
This is a quick-and-dirty way to run the C++ tests.
It can definitely be improved in the future, but it should fail when things go wrong.
- Run test functions on import (yes, this can definitely be improved)
- Fudge setuptools metadata (name & version) to make the extension installable
- Install and import the extension in test_cppext
