Add check that sensors don't have EntityCategory.CONFIG set (#101471)

homeassistant/components/nextcloud/sensor.py

@@ -348,7 +348,7 @@ SENSORS: Final[list[NextcloudSensorEntityDescription]] = [
         key="server_php_max_execution_time",
         translation_key="nextcloud_server_php_max_execution_time",
         device_class=SensorDeviceClass.DURATION,
-        entity_category=EntityCategory.CONFIG,
+        entity_category=EntityCategory.DIAGNOSTIC,
         icon="mdi:language-php",
         native_unit_of_measurement=UnitOfTime.SECONDS,
     ),
@@ -356,7 +356,7 @@ SENSORS: Final[list[NextcloudSensorEntityDescription]] = [
         key="server_php_memory_limit",
         translation_key="nextcloud_server_php_memory_limit",
         device_class=SensorDeviceClass.DATA_SIZE,
-        entity_category=EntityCategory.CONFIG,
+        entity_category=EntityCategory.DIAGNOSTIC,
         icon="mdi:language-php",
         native_unit_of_measurement=UnitOfInformation.BYTES,
         suggested_display_precision=1,
@@ -366,7 +366,7 @@ SENSORS: Final[list[NextcloudSensorEntityDescription]] = [
         key="server_php_upload_max_filesize",
         translation_key="nextcloud_server_php_upload_max_filesize",
         device_class=SensorDeviceClass.DATA_SIZE,
-        entity_category=EntityCategory.CONFIG,
+        entity_category=EntityCategory.DIAGNOSTIC,
         icon="mdi:language-php",
         native_unit_of_measurement=UnitOfInformation.BYTES,
         suggested_display_precision=1,

homeassistant/components/sensor/__init__.py

@@ -47,9 +47,11 @@ from homeassistant.const import (  # noqa: F401
     DEVICE_CLASS_TIMESTAMP,
     DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS,
     DEVICE_CLASS_VOLTAGE,
+    EntityCategory,
     UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant, State, callback
+from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.config_validation import (
     PLATFORM_SCHEMA,
@@ -251,6 +253,11 @@ class SensorEntity(Entity):
     async def async_internal_added_to_hass(self) -> None:
         """Call when the sensor entity is added to hass."""
         await super().async_internal_added_to_hass()
+        if self.entity_category == EntityCategory.CONFIG:
+            raise HomeAssistantError(
+                f"Entity {self.entity_id} cannot be added as the entity category is set to config"
+            )
+
         if not self.registry_entry:
             return
         self._async_read_entity_options()

tests/components/esphome/test_sensor.py

@@ -97,7 +97,7 @@ async def test_generic_numeric_sensor_with_entity_category_and_icon(
             key=1,
             name="my sensor",
             unique_id="my_sensor",
-            entity_category=ESPHomeEntityCategory.CONFIG,
+            entity_category=ESPHomeEntityCategory.DIAGNOSTIC,
             icon="mdi:leaf",
         )
     ]
@@ -117,7 +117,7 @@ async def test_generic_numeric_sensor_with_entity_category_and_icon(
     entry = entity_reg.async_get("sensor.test_mysensor")
     assert entry is not None
     assert entry.unique_id == "my_sensor"
-    assert entry.entity_category is EntityCategory.CONFIG
+    assert entry.entity_category is EntityCategory.DIAGNOSTIC
 
 
 async def test_generic_numeric_sensor_state_class_measurement(

tests/components/mqtt/test_common.py

@@ -23,6 +23,7 @@ from homeassistant.const import (
     ATTR_ENTITY_ID,
     SERVICE_RELOAD,
     STATE_UNAVAILABLE,
+    EntityCategory,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.generated.mqtt import MQTT
@@ -1635,9 +1636,9 @@ async def help_test_entity_category(
     entry = ent_registry.async_get(entity_id)
     assert entry is not None and entry.entity_category is None
 
-    # Discover an entity with entity category set to "config"
+    # Discover an entity with entity category set to "diagnostic"
     unique_id = "veryunique2"
-    config["entity_category"] = "config"
+    config["entity_category"] = EntityCategory.DIAGNOSTIC
     config["unique_id"] = unique_id
     data = json.dumps(config)
     async_fire_mqtt_message(hass, f"homeassistant/{domain}/{unique_id}/config", data)
@@ -1645,7 +1646,7 @@ async def help_test_entity_category(
     entity_id = ent_registry.async_get_entity_id(domain, mqtt.DOMAIN, unique_id)
     assert entity_id is not None and hass.states.get(entity_id)
     entry = ent_registry.async_get(entity_id)
-    assert entry is not None and entry.entity_category == "config"
+    assert entry is not None and entry.entity_category == EntityCategory.DIAGNOSTIC
 
     # Discover an entity with entity category set to "no_such_category"
     unique_id = "veryunique3"

tests/components/sensor/test_init.py

@@ -26,6 +26,7 @@ from homeassistant.const import (
     ATTR_UNIT_OF_MEASUREMENT,
     PERCENTAGE,
     STATE_UNKNOWN,
+    EntityCategory,
     UnitOfEnergy,
     UnitOfLength,
     UnitOfMass,
@@ -2496,3 +2497,25 @@ def test_device_class_units_state_classes(hass: HomeAssistant) -> None:
     ) - NON_NUMERIC_DEVICE_CLASSES - {SensorDeviceClass.MONETARY}
     # DEVICE_CLASS_STATE_CLASSES should include all device classes
     assert set(DEVICE_CLASS_STATE_CLASSES) == set(SensorDeviceClass)
+
+
+async def test_entity_category_config_raises_error(
+    hass: HomeAssistant,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test error is raised when entity category is set to config."""
+    platform = getattr(hass.components, "test.sensor")
+    platform.init(empty=True)
+    platform.ENTITIES["0"] = platform.MockSensor(
+        name="Test", entity_category=EntityCategory.CONFIG
+    )
+
+    assert await async_setup_component(hass, "sensor", {"sensor": {"platform": "test"}})
+    await hass.async_block_till_done()
+
+    assert (
+        "Entity sensor.test cannot be added as the entity category is set to config"
+        in caplog.text
+    )
+
+    assert not hass.states.get("sensor.test")