Warn when sysmon cannot switch dynamic contexts - #2234
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nedbat merged 8 commits intoJul 27, 2026
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This is now released as part of coverage 7.15.3. |
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What
Add an explicit core capability for dynamic contexts and warn once when
switch_context()is used with the sys.monitoring core.Why
The sysmon core cannot currently honor dynamic context switches. Programmatic calls previously continued silently, which could produce incomplete per-context data without any indication to the caller.
Fixes #2200
Tests
COVERAGE_CORE=sysmon python -m pytest -q tests/test_api.py::ApiTest::test_switch_context_sysmon_warningCOVERAGE_CORE=ctrace python -m pytest -q tests/test_api.py::SwitchContextTestCOVERAGE_CORE=pytrace python -m pytest -q tests/test_api.py::SwitchContextTestHYPOTHESIS_PROFILE=ci tox -q -e py314python -m mypy --python-version=3.14 --strict coverage tests setup.pyruff format --check coverage/control.py coverage/core.py tests/test_api.pypython -m pylint --notes= coverage/control.py coverage/core.py tests/test_api.pypre-commit run --files coverage/control.py coverage/core.py tests/test_api.py