Assume Fritz!Smarthome device as unavailable (#56542)

homeassistant/components/fritzbox/__init__.py

@@ -68,6 +68,18 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         data = {}
         for device in devices:
             device.update()
+
+            # assume device as unavailable, see #55799
+            if (
+                device.has_powermeter
+                and device.present
+                and hasattr(device, "voltage")
+                and device.voltage <= 0
+                and device.power <= 0
+                and device.energy <= 0
+            ):
+                device.present = False
+
             data[device.ain] = device
         return data
 

tests/components/fritzbox/__init__.py

@@ -108,6 +108,7 @@ class FritzDeviceSwitchMock(FritzDeviceBaseMock):
     battery_level = None
     device_lock = "fake_locked_device"
     energy = 1234
+    voltage = 230
     fw_version = "1.2.3"
     has_alarm = False
     has_powermeter = True

tests/components/fritzbox/test_switch.py

@@ -26,6 +26,7 @@ from homeassistant.const import (
     SERVICE_TURN_OFF,
     SERVICE_TURN_ON,
     STATE_ON,
+    STATE_UNAVAILABLE,
     TEMP_CELSIUS,
 )
 from homeassistant.core import HomeAssistant
@@ -137,3 +138,18 @@ async def test_update_error(hass: HomeAssistant, fritz: Mock):
 
     assert device.update.call_count == 2
     assert fritz().login.call_count == 2
+
+
+async def test_assume_device_unavailable(hass: HomeAssistant, fritz: Mock):
+    """Test assume device as unavailable."""
+    device = FritzDeviceSwitchMock()
+    device.voltage = 0
+    device.energy = 0
+    device.power = 0
+    assert await setup_config_entry(
+        hass, MOCK_CONFIG[FB_DOMAIN][CONF_DEVICES][0], ENTITY_ID, device, fritz
+    )
+
+    state = hass.states.get(ENTITY_ID)
+    assert state
+    assert state.state == STATE_UNAVAILABLE