New test failures in Fedora with 1.20.0/0.41b0

Describe your environment

Fedora 38, 39, or 40/Rawhide, with Python 3.12.0rc2.

Steps to reproduce

Run the tests.

What is the expected behavior?

All tests pass.

What is the actual behavior?

=================================== FAILURES ===================================
__________________ TestSanitizeMethod.test_nonstandard_method __________________

self = <tests.test_sanitize_method.TestSanitizeMethod testMethod=test_nonstandar
d_method>

    def test_nonstandard_method(self):
        method = sanitize_method("UNKNOWN")  
>       self.assertEqual(method, "NONSTANDARD")
E       AssertionError: 'UNKNOWN' != 'NONSTANDARD'
E       - UNKNOWN
E       + NONSTANDARD

util/opentelemetry-util-http/tests/test_sanitize_method.py:34: AssertionError
______________ TestSanitizeMethod.test_nonstandard_method_allowed ______________

self = <tests.test_sanitize_method.TestSanitizeMethod testMethod=test_nonstandard_method_allowed>

    @patch.dict(
    "os.environ",
        {   
            OTEL_PYTHON_INSTRUMENTATION_HTTP_CAPTURE_ALL_METHODS: "1",
        },
    )
    def test_nonstandard_method_allowed(self):
        method = sanitize_method("UNKNOWN")
>       self.assertEqual(method, "NONSTANDARD")
E       AssertionError: 'UNKNOWN' != 'NONSTANDARD'
E       - UNKNOWN
E       + NONSTANDARD

util/opentelemetry-util-http/tests/test_sanitize_method.py:44: AssertionError

Additional context

I maintain the python-opentelemetry-contrib package in Fedora Linux.

It’s not immediately obvious (without reading a lot of code) where I should start looking for a root cause, but I’m happy to perform any experiments that might be helpful.

Start with util/opentelemetry-util-http/tests/test_sanitize_method.py and run the two failing tests for sanitize_method("UNKNOWN"). Trace sanitize_method from those tests to identify why it returns UNKNOWN on Fedora with Python 3.12. The work is done when the affected tests pass and the expected NONSTANDARD behavior is restored.