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# test_getopt.py
# David Goodger <dgoodger@bigfoot.com> 2000-08-19
from test.support.os_helper import EnvironmentVarGuard
import doctest
import unittest
import getopt
sentinel = object()
class GetoptTests(unittest.TestCase):
def setUp(self):
self.env = self.enterContext(EnvironmentVarGuard())
if "POSIXLY_CORRECT" in self.env:
del self.env["POSIXLY_CORRECT"]
def assertError(self, *args, **kwargs):
self.assertRaises(getopt.GetoptError, *args, **kwargs)
def test_short_has_arg(self):
self.assertTrue(getopt.short_has_arg('a', 'a:'))
self.assertFalse(getopt.short_has_arg('a', 'a'))
self.assertError(getopt.short_has_arg, 'a', 'b')
def test_long_has_args(self):
has_arg, option = getopt.long_has_args('abc', ['abc='])
self.assertTrue(has_arg)
self.assertEqual(option, 'abc')
has_arg, option = getopt.long_has_args('abc', ['abc'])
self.assertFalse(has_arg)
self.assertEqual(option, 'abc')
has_arg, option = getopt.long_has_args('abc', ['abcd'])
self.assertFalse(has_arg)
self.assertEqual(option, 'abcd')
self.assertError(getopt.long_has_args, 'abc', ['def'])
self.assertError(getopt.long_has_args, 'abc', [])
self.assertError(getopt.long_has_args, 'abc', ['abcd','abcde'])
def test_do_shorts(self):
opts, args = getopt.do_shorts([], 'a', 'a', [])
self.assertEqual(opts, [('-a', '')])
self.assertEqual(args, [])
opts, args = getopt.do_shorts([], 'a1', 'a:', [])
self.assertEqual(opts, [('-a', '1')])
self.assertEqual(args, [])
#opts, args = getopt.do_shorts([], 'a=1', 'a:', [])
#self.assertEqual(opts, [('-a', '1')])
#self.assertEqual(args, [])
opts, args = getopt.do_shorts([], 'a', 'a:', ['1'])
self.assertEqual(opts, [('-a', '1')])
self.assertEqual(args, [])
opts, args = getopt.do_shorts([], 'a', 'a:', ['1', '2'])
self.assertEqual(opts, [('-a', '1')])
self.assertEqual(args, ['2'])
self.assertError(getopt.do_shorts, [], 'a1', 'a', [])
self.assertError(getopt.do_shorts, [], 'a', 'a:', [])
def test_do_longs(self):
opts, args = getopt.do_longs([], 'abc', ['abc'], [])
self.assertEqual(opts, [('--abc', '')])
self.assertEqual(args, [])
opts, args = getopt.do_longs([], 'abc=1', ['abc='], [])
self.assertEqual(opts, [('--abc', '1')])
self.assertEqual(args, [])
opts, args = getopt.do_longs([], 'abc=1', ['abcd='], [])
self.assertEqual(opts, [('--abcd', '1')])
self.assertEqual(args, [])
opts, args = getopt.do_longs([], 'abc', ['ab', 'abc', 'abcd'], [])
self.assertEqual(opts, [('--abc', '')])
self.assertEqual(args, [])
# Much like the preceding, except with a non-alpha character ("-") in
# option name that precedes "="; failed in
# https://bugs.python.org/issue126863
opts, args = getopt.do_longs([], 'foo=42', ['foo-bar', 'foo=',], [])
self.assertEqual(opts, [('--foo', '42')])
self.assertEqual(args, [])
self.assertError(getopt.do_longs, [], 'abc=1', ['abc'], [])
self.assertError(getopt.do_longs, [], 'abc', ['abc='], [])
def test_getopt(self):
# note: the empty string between '-a' and '--beta' is significant:
# it simulates an empty string option argument ('-a ""') on the
# command line.
cmdline = ['-a', '1', '-b', '--alpha=2', '--beta', '-a', '3', '-a',
'', '--beta', 'arg1', 'arg2']
opts, args = getopt.getopt(cmdline, 'a:b', ['alpha=', 'beta'])
self.assertEqual(opts, [('-a', '1'), ('-b', ''),
('--alpha', '2'), ('--beta', ''),
('-a', '3'), ('-a', ''), ('--beta', '')])
# Note ambiguity of ('-b', '') and ('-a', '') above. This must be
# accounted for in the code that calls getopt().
self.assertEqual(args, ['arg1', 'arg2'])
self.assertError(getopt.getopt, cmdline, 'a:b', ['alpha', 'beta'])
def test_gnu_getopt(self):
# Test handling of GNU style scanning mode.
cmdline = ['-a', 'arg1', '-b', '1', '--alpha', '--beta=2']
# GNU style
opts, args = getopt.gnu_getopt(cmdline, 'ab:', ['alpha', 'beta='])
self.assertEqual(args, ['arg1'])
self.assertEqual(opts, [('-a', ''), ('-b', '1'),
('--alpha', ''), ('--beta', '2')])
# recognize "-" as an argument
opts, args = getopt.gnu_getopt(['-a', '-', '-b', '-'], 'ab:', [])
self.assertEqual(args, ['-'])
self.assertEqual(opts, [('-a', ''), ('-b', '-')])
# Posix style via +
opts, args = getopt.gnu_getopt(cmdline, '+ab:', ['alpha', 'beta='])
self.assertEqual(opts, [('-a', '')])
self.assertEqual(args, ['arg1', '-b', '1', '--alpha', '--beta=2'])
# Posix style via POSIXLY_CORRECT
self.env["POSIXLY_CORRECT"] = "1"
opts, args = getopt.gnu_getopt(cmdline, 'ab:', ['alpha', 'beta='])
self.assertEqual(opts, [('-a', '')])
self.assertEqual(args, ['arg1', '-b', '1', '--alpha', '--beta=2'])
def test_issue4629(self):
longopts, shortopts = getopt.getopt(['--help='], '', ['help='])
self.assertEqual(longopts, [('--help', '')])
longopts, shortopts = getopt.getopt(['--help=x'], '', ['help='])
self.assertEqual(longopts, [('--help', 'x')])
self.assertRaises(getopt.GetoptError, getopt.getopt, ['--help='], '', ['help'])
def test_libref_examples():
"""
Examples from the Library Reference: Doc/lib/libgetopt.tex
An example using only Unix style options:
>>> import getopt
>>> args = '-a -b -cfoo -d bar a1 a2'.split()
>>> args
['-a', '-b', '-cfoo', '-d', 'bar', 'a1', 'a2']
>>> optlist, args = getopt.getopt(args, 'abc:d:')
>>> optlist
[('-a', ''), ('-b', ''), ('-c', 'foo'), ('-d', 'bar')]
>>> args
['a1', 'a2']
Using long option names is equally easy:
>>> s = '--condition=foo --testing --output-file abc.def -x a1 a2'
>>> args = s.split()
>>> args
['--condition=foo', '--testing', '--output-file', 'abc.def', '-x', 'a1', 'a2']
>>> optlist, args = getopt.getopt(args, 'x', [
... 'condition=', 'output-file=', 'testing'])
>>> optlist
[('--condition', 'foo'), ('--testing', ''), ('--output-file', 'abc.def'), ('-x', '')]
>>> args
['a1', 'a2']
"""
def load_tests(loader, tests, pattern):
tests.addTest(doctest.DocTestSuite())
return tests
if __name__ == "__main__":
unittest.main()
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