async def METHOD_NAME(hass):
    """Test the initialisation."""
    entry = MockConfigEntry(
        domain=DOMAIN,
        data={
            CONF_TYPE: "goldair_gpph_heater",
            CONF_DEVICE_ID: "dummy",
            CONF_PROTOCOL_VERSION: "auto",
        },
    )
    # although async, the async_add_entities function passed to
    # async_setup_entry is called truly asynchronously. If we use
    # AsyncMock, it expects us to await the result.
    m_add_entities = Mock()
    m_device = AsyncMock()
    hass.data[DOMAIN] = {}
    hass.data[DOMAIN]["dummy"] = {}
    hass.data[DOMAIN]["dummy"]["device"] = m_device
    await async_setup_entry(hass, entry, m_add_entities)
    assert type(hass.data[DOMAIN]["dummy"]["light_display"]) == TuyaLocalLight
    m_add_entities.assert_called_once()