Respect ESPHome ClimateTrait supports_current_temperature (home-assis…

…tant#132149)

homeassistant/components/esphome/climate.py

@@ -230,6 +230,8 @@ def swing_mode(self) -> str | None:
     @esphome_float_state_property
     def current_temperature(self) -> float | None:
         """Return the current temperature."""
+        if not self._static_info.supports_current_temperature:
+            return None
         return self._state.current_temperature
 
     @property

tests/components/esphome/test_climate.py

@@ -484,3 +484,36 @@ async def test_climate_entity_attributes(
     assert state is not None
     assert state.state == HVACMode.COOL
     assert state.attributes == snapshot(name="climate-entity-attributes")
+
+
+async def test_climate_entity_attribute_current_temperature_unsupported(
+    hass: HomeAssistant,
+    mock_client: APIClient,
+    mock_generic_device_entry,
+) -> None:
+    """Test a climate entity with current temperature unsupported."""
+    entity_info = [
+        ClimateInfo(
+            object_id="myclimate",
+            key=1,
+            name="my climate",
+            unique_id="my_climate",
+            supports_current_temperature=False,
+        )
+    ]
+    states = [
+        ClimateState(
+            key=1,
+            current_temperature=30,
+        )
+    ]
+    user_service = []
+    await mock_generic_device_entry(
+        mock_client=mock_client,
+        entity_info=entity_info,
+        user_service=user_service,
+        states=states,
+    )
+    state = hass.states.get("climate.test_myclimate")
+    assert state is not None
+    assert state.attributes[ATTR_CURRENT_TEMPERATURE] is None