def test_validate_given_instances_duplicate_args():
service_instances = ['instance1', 'instance2', 'instance3']
given_instances = ['instance1', 'instance1']
expected_valid = set(['instance1'])
expected_invalid = set([])
actual_valid, actual_invalid = validate_given_instances(service_instances, given_instances)
assert actual_valid == expected_valid
assert actual_invalid == expected_invalid
def test_validate_given_instances_wrong_arg():
service_instances = ['instance1', 'instance2']
given_instances = ['instance0', 'not_an_instance']
expected_valid = set([])
expected_invalid = set(['instance0', 'not_an_instance'])
actual_valid, actual_invalid = validate_given_instances(service_instances, given_instances)
assert actual_valid == expected_valid
assert actual_invalid == expected_invalid