Add Fritz!DECT 440 humidity sensor (#54597)

Co-authored-by: Michael <35783820+mib1185@users.noreply.github.com>

homeassistant/components/fritzbox/sensor.py

@@ -17,6 +17,7 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     DEVICE_CLASS_BATTERY,
     DEVICE_CLASS_ENERGY,
+    DEVICE_CLASS_HUMIDITY,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_TEMPERATURE,
     ENERGY_KILO_WATT_HOUR,
@@ -58,6 +59,15 @@ SENSOR_TYPES: Final[tuple[FritzSensorEntityDescription, ...]] = (
         ),
         native_value=lambda device: device.temperature,  # type: ignore[no-any-return]
     ),
+    FritzSensorEntityDescription(
+        key="humidity",
+        name="Humidity",
+        native_unit_of_measurement=PERCENTAGE,
+        device_class=DEVICE_CLASS_HUMIDITY,
+        state_class=STATE_CLASS_MEASUREMENT,
+        suitable=lambda device: device.rel_humidity is not None,
+        native_value=lambda device: device.rel_humidity,  # type: ignore[no-any-return]
+    ),
     FritzSensorEntityDescription(
         key="battery",
         name="Battery",

tests/components/fritzbox/__init__.py

@@ -100,6 +100,7 @@ class FritzDeviceSensorMock(FritzDeviceBaseMock):
     lock = "fake_locked"
     present = True
     temperature = 1.23
+    rel_humidity = 42
 
 
 class FritzDeviceSwitchMock(FritzDeviceBaseMock):

tests/components/fritzbox/test_sensor.py

@@ -49,6 +49,13 @@ async def test_setup(hass: HomeAssistant, fritz: Mock):
     assert state.attributes[ATTR_UNIT_OF_MEASUREMENT] == TEMP_CELSIUS
     assert state.attributes[ATTR_STATE_CLASS] == STATE_CLASS_MEASUREMENT
 
+    state = hass.states.get(f"{ENTITY_ID}_humidity")
+    assert state
+    assert state.state == "42"
+    assert state.attributes[ATTR_FRIENDLY_NAME] == f"{CONF_FAKE_NAME} Humidity"
+    assert state.attributes[ATTR_UNIT_OF_MEASUREMENT] == PERCENTAGE
+    assert state.attributes[ATTR_STATE_CLASS] == STATE_CLASS_MEASUREMENT
+
     state = hass.states.get(f"{ENTITY_ID}_battery")
     assert state
     assert state.state == "23"

tests/components/fritzbox/test_switch.py

@@ -64,6 +64,9 @@ async def test_setup(hass: HomeAssistant, fritz: Mock):
     assert state.attributes[ATTR_UNIT_OF_MEASUREMENT] == TEMP_CELSIUS
     assert state.attributes[ATTR_STATE_CLASS] == STATE_CLASS_MEASUREMENT
 
+    state = hass.states.get(f"{ENTITY_ID}_humidity")
+    assert state is None
+
     state = hass.states.get(f"{SENSOR_DOMAIN}.{CONF_FAKE_NAME}_power_consumption")
     assert state
     assert state.state == "5.678"