worker.py

import subprocess
import sys
import os
from typing import Any, NoReturn

from test.support import os_helper

from .setup import setup_process, setup_test_dir
from .runtests import WorkerRunTests, JsonFile, JsonFileType
from .single import run_single_test
from .utils import (
    StrPath, StrJSON, TestFilter,
    get_temp_dir, get_work_dir, exit_timeout)

USE_PROCESS_GROUP = (hasattr(os, "setsid") and hasattr(os, "killpg"))

def create_worker_process(runtests: WorkerRunTests, output_fd: int,
                          tmp_dir: StrPath | None = None) -> subprocess.Popen:
    worker_json = runtests.as_json()

cmd = runtests.create_python_cmd()
    cmd.extend(['-m', 'test.libregrtest.worker', worker_json])

env = dict(os.environ)
    if tmp_dir is not None:
        env['TMPDIR'] = tmp_dir
        env['TEMP'] = tmp_dir
        env['TMP'] = tmp_dir

# Running the child from the same working directory as regrtest's original
    # invocation ensures that TEMPDIR for the child is the same when
    # sysconfig.is_python_build() is true. See issue 15300.
    #
    # Emscripten and WASI Python must start in the Python source code directory
    # to get 'python.js' or 'python.wasm' file. Then worker_process() changes
    # to a temporary directory created to run tests.
    work_dir = os_helper.SAVEDCWD

kwargs: dict[str, Any] = dict(
        env=env,
        stdout=output_fd,
        # bpo-45410: Write stderr into stdout to keep messages order
        stderr=output_fd,
        text=True,
        close_fds=True,
        cwd=work_dir,
    )
    if USE_PROCESS_GROUP:
        kwargs['start_new_session'] = True

# Pass json_file to the worker process
    json_file = runtests.json_file
    json_file.configure_subprocess(kwargs)

with json_file.inherit_subprocess():
        return subprocess.Popen(cmd, **kwargs)

def worker_process(worker_json: StrJSON) -> NoReturn:
    runtests = WorkerRunTests.from_json(worker_json)
    test_name = runtests.tests[0]
    match_tests: TestFilter = runtests.match_tests
    json_file: JsonFile = runtests.json_file

setup_test_dir(runtests.test_dir)
    setup_process()

if runtests.rerun:
        if match_tests:
            matching = "matching: " + ", ".join(pattern for pattern, result in match_tests if result)
            print(f"Re-running {test_name} in verbose mode ({matching})", flush=True)
        else:
            print(f"Re-running {test_name} in verbose mode", flush=True)

result = run_single_test(test_name, runtests)

if json_file.file_type == JsonFileType.STDOUT:
        print()
        result.write_json_into(sys.stdout)
    else:
        with json_file.open('w', encoding='utf-8') as json_fp:
            result.write_json_into(json_fp)

sys.exit(0)

def main():
    if len(sys.argv) != 2:
        print("usage: python -m test.libregrtest.worker JSON")
        sys.exit(1)
    worker_json = sys.argv[1]

tmp_dir = get_temp_dir()
    work_dir = get_work_dir(tmp_dir, worker=True)

with exit_timeout():
        with os_helper.temp_cwd(work_dir, quiet=True):
            worker_process(worker_json)

if __name__ == "__main__":
    main()

docroot: /var/www/469ed2f6-4d4b-4a8a-9f5e-ee4ef04d3bc8/public_html

curdir: /usr/lib/python3.12/test/libregrtest

	.	4096
	..	4096
X	__init__.py	0
	__pycache__	4096
X	cmdline.py	23595
X	filter.py	2453
X	findtests.py	3557
X	logger.py	2759
X	main.py	26300
X	mypy.ini	997
X	pgo.py	1398
X	refleak.py	7997
X	result.py	7202
X	results.py	9128
X	run_workers.py	22364
X	runtests.py	6959
X	save_env.py	13046
X	setup.py	5010
X	single.py	10652
X	testresult.py	6232
X	tsan.py	700
X	utils.py	21709
X	win_utils.py	4671
X	worker.py	3161