mirror of
https://github.com/kuhyx/testsAndMisc.git
synced 2026-07-04 16:23:04 +02:00
Krzysztof kuhy Rudnicki
d8f8605275
The coverage gate failed twice in a row on GitHub Actions on the exact same line (wake_alarm/_alarm_display.py:71), with the run rerun on the identical commit -- ruling out a one-off flake. Could not reproduce locally across 6 attempts, including running the exact same -n 4 invocation directly. The likely cause is a pytest-xdist/pytest-cov worker coverage-combine timing issue specific to the CI runner that isn't practical to root-cause further from here. Running the hook serially removes the risk outright; local timing shows no meaningful slowdown. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01A7vbgtFfZmfxJtN5DdtJky
89 lines
2.8 KiB
Python
Executable File
89 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Run pytest for all python_pkg subpackages whenever any Python file changes.
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Used as a pre-commit hook entry point. Receives staged file paths as arguments.
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If any Python file changed, discovers every subpackage under ``python_pkg/``
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that has a ``tests/`` directory and runs them all in a single parallelised
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invocation with whole-repo coverage measured against ``python_pkg``.
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Running all packages together (rather than just the touched ones) ensures that
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100% branch coverage is maintained across the entire codebase on every commit,
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not just the files that happened to change.
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Standalone script suites outside ``python_pkg/`` (currently
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``linux_configuration/tests``) are also run so their behaviour is gated, but
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they are not coverage-measured (coverage stays scoped to ``python_pkg``).
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"""
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from __future__ import annotations
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import os
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from pathlib import Path
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import shutil
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import subprocess
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import sys
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_TOTAL_MEM = "4G"
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# Standalone script test suites outside python_pkg/ that should be gated but
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# not coverage-measured. Skipped silently if the directory does not exist.
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_EXTRA_TEST_DIRS = ("linux_configuration/tests",)
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def main() -> int:
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"""Entry point."""
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if not sys.argv[1:]:
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return 0
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packages = sorted(
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entry.name
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for entry in Path("python_pkg").iterdir()
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if (entry / "tests").is_dir()
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)
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if not packages:
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return 0
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test_dirs = [f"python_pkg/{pkg}/tests" for pkg in packages]
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test_dirs += [d for d in _EXTRA_TEST_DIRS if Path(d).is_dir()]
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cmd = [
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sys.executable,
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"-m",
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"pytest",
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"--cov",
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"python_pkg",
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"--cov-branch",
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"--cov-report=term-missing",
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"--cov-fail-under=100",
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"-q",
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# No -n/xdist: pytest-cov's worker coverage combine has shown a
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# reproducible (not flaky -- failed identically twice in a row) gap
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# under -n 4 on the GitHub Actions runner that never occurs running
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# serially, including run repeatedly with the same -n 4 locally.
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# Serial is slightly slower but has never produced a false coverage
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# failure, which matters more for a 100%-coverage gate.
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# Override addopts from pyproject.toml to avoid double --cov flags.
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"-o",
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"addopts=--strict-markers --strict-config -ra",
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*test_dirs,
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]
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if shutil.which("systemd-run") is not None:
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cmd = [
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"systemd-run",
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"--user",
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"--scope",
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"--quiet",
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"--collect",
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"-p",
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f"MemoryMax={_TOTAL_MEM}",
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"-p",
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"MemorySwapMax=0",
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*cmd,
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]
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return subprocess.run(cmd, check=False, env=os.environ).returncode
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if __name__ == "__main__":
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raise SystemExit(main())
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