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optmanager: Inherit options from parent argument parsers

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Allow for including options from parent `argparse.ArgumentParser`
objects in preparation of splitting out the handling of preliminary
options from the `OptionManager`.
This commit is contained in:
Eric N. Vander Weele 2019-10-25 15:01:30 -04:00
parent 2a5c2bb696
commit 1d7558f7da
2 changed files with 30 additions and 3 deletions
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17
tests/unit/test_option_manager.py
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@ -22,6 +22,23 @@ def test_option_manager_creates_option_parser(optmanager):
assert isinstance(optmanager.parser, argparse.ArgumentParser)
def test_option_manager_including_parent_options():
"""Verify parent options are included in the parsed options."""
# GIVEN
parent_parser = argparse.ArgumentParser(add_help=False)
parent_parser.add_argument('--parent')
# WHEN
optmanager = manager.OptionManager(
prog='flake8',
version=TEST_VERSION,
parents=[parent_parser])
option, _ = optmanager.parse_args(['--parent', 'foo'])
# THEN
assert option.parent == 'foo'
def test_parse_args_forwarding_default_values(optmanager):
"""Verify default provided values are present in the final result."""
namespace = argparse.Namespace(foo='bar')