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Diffstat (limited to 'Lib/test/test_argparse.py')
| -rw-r--r-- | Lib/test/test_argparse.py | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py index 0927281f69..6680feb016 100644 --- a/Lib/test/test_argparse.py +++ b/Lib/test/test_argparse.py @@ -2145,6 +2145,42 @@ class TestAddSubparsers(TestCase): wrap\N{NO-BREAK SPACE}at non-breaking spaces ''')) + def test_help_blank(self): + # Issue 24444 + parser = ErrorRaisingArgumentParser( + prog='PROG', description='main description') + parser.add_argument( + 'foo', + help=' ') + self.assertEqual(parser.format_help(), textwrap.dedent('''\ + usage: PROG [-h] foo + + main description + + positional arguments: + foo + + options: + -h, --help show this help message and exit + ''')) + + parser = ErrorRaisingArgumentParser( + prog='PROG', description='main description') + parser.add_argument( + 'foo', choices=[], + help='%(choices)s') + self.assertEqual(parser.format_help(), textwrap.dedent('''\ + usage: PROG [-h] {} + + main description + + positional arguments: + {} + + options: + -h, --help show this help message and exit + ''')) + def test_help_alternate_prefix_chars(self): parser = self._get_parser(prefix_chars='+:/') self.assertEqual(parser.format_usage(), |