def test_pararell_updates_async_platform_with_constant(hass):
    """Warn we log when platform setup takes a long time."""
    platform = MockPlatform()

    @asyncio.coroutine
    def mock_update(*args, **kwargs):
        pass

    platform.async_setup_platform = mock_update
    platform.PARALLEL_UPDATES = 1

    loader.set_component('test_domain.platform', platform)

    component = EntityComponent(_LOGGER, DOMAIN, hass)
    component._platforms = {}

    yield from component.async_setup({
        DOMAIN: {
            'platform': 'platform',
        }
    })

    handle = list(component._platforms.values())[-1]

    assert handle.parallel_updates is not None

async def test_parallel_updates_sync_platform_with_constant(hass):
    """Test sync platform can set parallel_updates limit."""
    platform = MockPlatform()
    platform.PARALLEL_UPDATES = 2

    loader.set_component(hass, 'test_domain.platform', platform)

    component = EntityComponent(_LOGGER, DOMAIN, hass)
    component._platforms = {}

    await component.async_setup({
        DOMAIN: {
            'platform': 'platform',
        }
    })

    handle = list(component._platforms.values())[-1]
    assert handle.parallel_updates == 2

    class SyncEntity(MockEntity):
        """Mock entity that has update."""

        async def update(self):
            pass

    entity = SyncEntity()
    await handle.async_add_entities([entity])
    assert entity.parallel_updates is not None
    assert entity.parallel_updates._value == 2

    def test_set_scan_interval_via_platform(self, mock_track):
        """Test the setting of the scan interval via platform."""

        def platform_setup(hass, config, add_devices, discovery_info=None):
            """Test the platform setup."""
            add_devices([EntityTest(should_poll=True)])

        platform = MockPlatform(platform_setup)
        platform.SCAN_INTERVAL = 30

        loader.set_component("test_domain.platform", platform)

        component = EntityComponent(_LOGGER, DOMAIN, self.hass)

        component.setup({DOMAIN: {"platform": "platform"}})

        assert mock_track.called
        assert [0, 30] == list(mock_track.call_args[1]["second"])

    def test_set_scan_interval_via_platform(self, mock_track):
        def platform_setup(hass, config, add_devices, discovery_info=None):
            add_devices([EntityTest(should_poll=True)])

        platform = MockPlatform(platform_setup)
        platform.SCAN_INTERVAL = 30

        loader.set_component('test_domain.platform', platform)

        component = EntityComponent(_LOGGER, DOMAIN, self.hass)

        component.setup({
            DOMAIN: {
                'platform': 'platform',
            }
        })

        assert mock_track.called
        assert [0, 30] == list(mock_track.call_args[1]['second'])

    def test_set_scan_interval_via_platform(self, mock_track):
        """Test the setting of the scan interval via platform."""
        def platform_setup(hass, config, add_devices, discovery_info=None):
            """Test the platform setup."""
            add_devices([EntityTest(should_poll=True)])

        platform = MockPlatform(platform_setup)
        platform.SCAN_INTERVAL = timedelta(seconds=30)

        loader.set_component('test_domain.platform', platform)

        component = EntityComponent(_LOGGER, DOMAIN, self.hass)

        component.setup({
            DOMAIN: {
                'platform': 'platform',
            }
        })

        assert mock_track.called
        assert timedelta(seconds=30) == mock_track.call_args[0][2]