Create marker for internal tests

.github/workflows/ci-cd.yml

@@ -213,7 +213,7 @@ jobs:
         PIP_USER: 1
       run: >-
         PATH="${HOME}/Library/Python/3.11/bin:${HOME}/.local/bin:${PATH}"
-        pytest
+        pytest -m internal
       shell: bash
     - name: Re-run the failing tests with maximum verbosity
       if: failure()

CHANGES/8299.packaging.rst

@@ -0,0 +1,2 @@
+Added an 'internal' pytest marker for tests which should be skipped
+by packagers and disabled them by default -- by :user:`Dreamsorcerer`.

setup.cfg

@@ -134,6 +134,8 @@ addopts =
 
     # run tests that are not marked with dev_mode
     -m "not dev_mode"
+    # skip internal by default for other users (re-enabled explicitly in CI).
+    -m "not internal"
 filterwarnings =
     error
     ignore:module 'ssl' has no attribute 'OP_NO_COMPRESSION'. The Python interpreter is compiled against OpenSSL < 1.0.0. Ref. https.//docs.python.org/3/library/ssl.html#ssl.OP_NO_COMPRESSION:UserWarning
@@ -170,3 +172,4 @@ junit_family=xunit2
 xfail_strict = true
 markers =
     dev_mode: mark test to run in dev mode.
+    internal: tests which may cause issues for packagers, but should be run in aiohttp's CI.

tests/test_imports.py

@@ -33,6 +33,7 @@ def test_web___all__(pytester: pytest.Pytester) -> None:
 }
 
 
+@pytest.mark.internal
 @pytest.mark.skipif(
     not sys.platform.startswith("linux") or platform.python_implementation() == "PyPy",
     reason="Timing is more reliable on Linux",