Adam Cozzette 9b46ed520e Add CI runs for testing upb Python wheels ... This restores the Python wheel CI runs from the old upb repo with only minor changes. I had to update a path in one of the `py_wheel` rules and also make a slight tweak to ensure that the `descriptor.upb_minitable.{h,c}` files make it into the source wheels. The change in text_format_test.py is not strictly necessary but is a small simplification I made while I was trying to debug an issue with CRLF newlines. I had to update test_util.py to use `importlib` to access the golden files from the installed `protobuftests` package. I suspect the previous incarnation of thse test runs was somehow reading the goldens from the repo checkout, but I think the intention is to read them from `protobuftests` instead. This was a bit tricky to get working because Python versions before 3.9 do not support `importlib.resources.files()`. I set up the code to fall back on `importlib.resources.open_binary()` in that case, but that function does not support subdirectories, so this required putting an `__init__.py` file inside the `testdata` directory to make sure it is treated as a Python package. PiperOrigin-RevId: 567366695		2023-09-21 11:33:23 -07:00
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__init__.py	Add CI runs for testing upb Python wheels	2023-09-21 11:33:23 -07:00