def test_api_key_list_empty_when_unset():
    from axon.config import Settings
    s = Settings(api_keys=None)
    assert s.api_key_list == []

def test_api_key_list_parses_csv():
    from axon.config import Settings
    s = Settings(api_keys="key1, key2 , key3")
    assert s.api_key_list == ["key1", "key2", "key3"]

def test_api_key_list_single():
    from axon.config import Settings
    s = Settings(api_keys="only-key")
    assert s.api_key_list == ["only-key"]