def ensure_sun_set(hass):
    """Trigger sun to set if above horizon."""
    if not sun.is_on(hass):
        return
    fire_time_changed(hass, sun.next_setting_utc(hass) / timedelta(seconds=10))
dataset/ETHPy150Open home-assistant/home-assistant/tests/common.py/ensure_sun_set/operator `+` -> `/`