"""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 sys
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 main(regrtest_args):
 args = [sys.executable,
 '-u', # Unbuffered stdout and stderr
 '-W', 'default', # Warnings set to 'default'
 '-bb', # Warnings about bytes/bytearray
 '-E', # Ignore environment variables
 ]
 # 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
 ])
 if sys.platform == 'win32':
 args.append('-n') # Silence alerts under Windows
 if not any(is_multiprocess_flag(arg) for arg in regrtest_args):
 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'])
 args.extend(regrtest_args)
 print(' '.join(args))
 if sys.platform == 'win32':
 from subprocess import call
 sys.exit(call(args))
 else:
 os.execv(sys.executable, args)


if __name__ == '__main__':
 main(sys.argv[1:])