Add guard for invalid EntityCategory value (#66316)

homeassistant/helpers/entity.py

@@ -223,7 +223,10 @@ def convert_to_entity_category(
                 "EntityCategory instead" % (type(value).__name__, value),
                 error_if_core=False,
             )
-        return EntityCategory(value)
+        try:
+            return EntityCategory(value)
+        except ValueError:
+            return None
     return value
 
 

tests/helpers/test_entity_registry.py

@@ -1138,3 +1138,15 @@ async def test_deprecated_entity_category_str(hass, registry, caplog):
 
     assert entry.entity_category is EntityCategory.DIAGNOSTIC
     assert " should be updated to use EntityCategory" in caplog.text
+
+
+async def test_invalid_entity_category_str(hass, registry, caplog):
+    """Test use of invalid entity category."""
+    entry = er.RegistryEntry(
+        "light",
+        "hue",
+        "5678",
+        entity_category="invalid",
+    )
+
+    assert entry.entity_category is None