cftest.py

import os
import subprocess
import sys

from oslo_log import log
from oslo_config import cfg

LOG = log.getLogger(__name__)
CONF = cfg.CONF

options = [
    cfg.BoolOpt('test-option', default=False)
]


def main():
    CONF.register_cli_opts(options, group='test')
    CONF(sys.argv[1:])

    if CONF.test.test_option:
        print('test-option was set')
    else:
        print('test-option was not set')


if __name__ == '__main__':
    sys.exit(main())

test-cftest.sh

#!/bin/sh

assert_equals() {
	if [[ $1 != $2 ]]; then
		echo "FAILED: \"$1\" != \"$2\""
		exit 1
	fi
}

cat > test.conf <<EOF
[test]
test_option = true
EOF

assert_equals "$(python cftest.py)" "test-option was not set"
assert_equals "$(python cftest.py --test-test-option)" "test-option was set"
assert_equals "$(python cftest.py --config-file test.conf)" "test-option was set"
assert_equals "$(python cftest.py --config-file test.conf --test-notest-option)" "test-option was not set"