def load_config_from_cli(config: GoodConf, argv: List[str]) -> List[str]:
"""Loads config, checking CLI arguments for a config file"""
# Monkey patch Django's command parser
from django.core.management.base import BaseCommand
original_parser = BaseCommand.create_parser
def patched_parser(self, prog_name, subcommand):
parser = original_parser(self, prog_name, subcommand)
argparser_add_argument(parser, config)
return parser
BaseCommand.create_parser = patched_parser
try:
parser = argparse.ArgumentParser(add_help=False)
argparser_add_argument(parser, config)
config_arg, default_args = parser.parse_known_args(argv)
config.load(config_arg.config)
yield default_args
finally:
# Put that create_parser back where it came from or so help me!
BaseCommand.create_parser = original_parser
def test_provided_file(mocker, tmpdir):
mocked_load_config = mocker.patch("goodconf._load_config")
path = tmpdir.join("myapp.json")
path.write("")
g = GoodConf()
g.load(str(path))
mocked_load_config.assert_called_once_with(str(path))
assert g.Config._config_file == str(path)