Extend state class sensor warnings with expected values (#87294)

homeassistant/components/sensor/__init__.py

@@ -508,12 +508,15 @@ class SensorEntity(Entity):
             _LOGGER.warning(
                 "Entity %s (%s) is using state class '%s' which "
                 "is impossible considering device class ('%s') it is using; "
+                "expected %s%s; "
                 "Please update your configuration if your entity is manually "
                 "configured, otherwise %s",
                 self.entity_id,
                 type(self),
                 state_class,
                 device_class,
+                "None or one of " if classes else "None",
+                ", ".join(f"'{value.value}'" for value in classes),
                 report_issue,
             )
 

homeassistant/components/sensor/const.py

@@ -509,7 +509,7 @@ DEVICE_CLASS_UNITS: dict[SensorDeviceClass, set[type[StrEnum] | str | None]] = {
     SensorDeviceClass.WIND_SPEED: set(UnitOfSpeed),
 }
 
-DEVICE_CLASS_STATE_CLASSES: dict[SensorDeviceClass, set[SensorStateClass | None]] = {
+DEVICE_CLASS_STATE_CLASSES: dict[SensorDeviceClass, set[SensorStateClass]] = {
     SensorDeviceClass.APPARENT_POWER: {SensorStateClass.MEASUREMENT},
     SensorDeviceClass.AQI: {SensorStateClass.MEASUREMENT},
     SensorDeviceClass.ATMOSPHERIC_PRESSURE: {SensorStateClass.MEASUREMENT},