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import subprocess
import sys
import os
from typing import Any, NoReturn
from test import support
from test.support import os_helper
from .setup import setup_process, setup_test_dir
from .runtests import RunTests, 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: RunTests, output_fd: int,
tmp_dir: StrPath | None = None) -> subprocess.Popen:
python_cmd = runtests.python_cmd
worker_json = runtests.as_json()
python_opts = support.args_from_interpreter_flags()
if python_cmd is not None:
executable = python_cmd
# Remove -E option, since --python=COMMAND can set PYTHON environment
# variables, such as PYTHONPATH, in the worker process.
python_opts = [opt for opt in python_opts if opt != "-E"]
else:
executable = (sys.executable,)
cmd = [*executable, *python_opts,
'-u', # Unbuffered stdout and stderr
'-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 = RunTests.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()
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