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"""
Tests of regrtest.py.
"""
import argparse
import getopt
import unittest
from test import regrtest, support
def old_parse_args(args):
"""Parse arguments as regrtest did strictly prior to 3.4.
Raises getopt.GetoptError on bad arguments.
"""
return getopt.getopt(args, 'hvqxsoS:rf:lu:t:TD:NLR:FdwWM:nj:Gm:',
['help', 'verbose', 'verbose2', 'verbose3', 'quiet',
'exclude', 'single', 'slow', 'randomize', 'fromfile=', 'findleaks',
'use=', 'threshold=', 'coverdir=', 'nocoverdir',
'runleaks', 'huntrleaks=', 'memlimit=', 'randseed=',
'multiprocess=', 'coverage', 'slaveargs=', 'forever', 'debug',
'start=', 'nowindows', 'header', 'testdir=', 'timeout=', 'wait',
'failfast', 'match='])
class ParseArgsTestCase(unittest.TestCase):
"""Test that regrtest's parsing code matches the prior getopt behavior."""
def _parse_args(self, args):
# This is the same logic as that used in regrtest.main()
parser = regrtest._create_parser()
ns = parser.parse_args(args=args)
opts = regrtest._convert_namespace_to_getopt(ns)
return opts, ns.args
def _check_args(self, args, expected=None):
"""
The expected parameter is for cases when the behavior of the new
parse_args differs from the old (but deliberately so).
"""
if expected is None:
try:
expected = old_parse_args(args)
except getopt.GetoptError:
# Suppress usage string output when an argparse.ArgumentError
# error is raised.
with support.captured_stderr():
self.assertRaises(SystemExit, self._parse_args, args)
return
# The new parse_args() sorts by long option string.
expected[0].sort()
actual = self._parse_args(args)
self.assertEqual(actual, expected)
def test_unrecognized_argument(self):
self._check_args(['--xxx'])
def test_value_not_provided(self):
self._check_args(['--start'])
def test_short_option(self):
# getopt returns the short option whereas argparse returns the long.
expected = ([('--quiet', '')], [])
self._check_args(['-q'], expected=expected)
def test_long_option(self):
self._check_args(['--quiet'])
def test_long_option__partial(self):
self._check_args(['--qui'])
def test_two_options(self):
self._check_args(['--quiet', '--exclude'])
def test_option_with_value(self):
self._check_args(['--start', 'foo'])
def test_option_with_empty_string_value(self):
self._check_args(['--start', ''])
def test_arg(self):
self._check_args(['foo'])
def test_option_and_arg(self):
self._check_args(['--quiet', 'foo'])
def test_fromfile(self):
self._check_args(['--fromfile', 'file'])
def test_match(self):
self._check_args(['--match', 'pattern'])
def test_randomize(self):
self._check_args(['--randomize'])
def test_main():
support.run_unittest(__name__)
if __name__ == '__main__':
test_main()
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