cpython/Tools/scripts/run_tests.py

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"""Run Python's test suite in a fast, rigorous way.
The defaults are meant to be reasonably thorough, while skipping certain
tests that can be time-consuming or resource-intensive (e.g. largefile),
or distracting (e.g. audio and gui). These defaults can be overridden by
simply passing a -u option to this script.
"""
import os
import shlex
import sys
import sysconfig
import test.support
def is_multiprocess_flag(arg):
return arg.startswith('-j') or arg.startswith('--multiprocess')
def is_resource_use_flag(arg):
return arg.startswith('-u') or arg.startswith('--use')
def is_python_flag(arg):
return arg.startswith('-p') or arg.startswith('--python')
def main(regrtest_args):
args = [sys.executable,
'-u', # Unbuffered stdout and stderr
'-W', 'default', # Warnings set to 'default'
'-bb', # Warnings about bytes/bytearray
]
cross_compile = '_PYTHON_HOST_PLATFORM' in os.environ
if (hostrunner := os.environ.get("_PYTHON_HOSTRUNNER")) is None:
hostrunner = sysconfig.get_config_var("HOSTRUNNER")
if cross_compile:
# emulate -E, but keep PYTHONPATH + cross compile env vars, so
# test executable can load correct sysconfigdata file.
keep = {
'_PYTHON_PROJECT_BASE',
'_PYTHON_HOST_PLATFORM',
'_PYTHON_SYSCONFIGDATA_NAME',
'PYTHONPATH'
}
environ = {
name: value for name, value in os.environ.items()
if not name.startswith(('PYTHON', '_PYTHON')) or name in keep
}
else:
environ = os.environ.copy()
args.append("-E")
# Allow user-specified interpreter options to override our defaults.
args.extend(test.support.args_from_interpreter_flags())
args.extend(['-m', 'test', # Run the test suite
'-r', # Randomize test order
'-w', # Re-run failed tests in verbose mode
])
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if sys.platform == 'win32':
args.append('-n') # Silence alerts under Windows
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if not any(is_multiprocess_flag(arg) for arg in regrtest_args):
if cross_compile and hostrunner:
# For now use only two cores for cross-compiled builds;
# hostrunner can be expensive.
args.extend(['-j', '2'])
else:
args.extend(['-j', '0']) # Use all CPU cores
if not any(is_resource_use_flag(arg) for arg in regrtest_args):
args.extend(['-u', 'all,-largefile,-audio,-gui'])
if cross_compile and hostrunner:
# If HOSTRUNNER is set and -p/--python option is not given, then
# use hostrunner to execute python binary for tests.
if not any(is_python_flag(arg) for arg in regrtest_args):
buildpython = sysconfig.get_config_var("BUILDPYTHON")
args.extend(["--python", f"{hostrunner} {buildpython}"])
args.extend(regrtest_args)
print(shlex.join(args))
if sys.platform == 'win32':
from subprocess import call
sys.exit(call(args))
else:
os.execve(sys.executable, args, environ)
if __name__ == '__main__':
main(sys.argv[1:])