Proxy descriptor attributes.

pyplumio/helpers/parameter.py

@@ -114,6 +114,10 @@ def __repr__(self) -> str:
             f"min_value={self.min_value}, max_value={self.max_value})"
         )
 
+    def __getattr__(self, name: str):
+        """Return attributes from the parameter description."""
+        return getattr(self.description, name)
+
     def _call_relational_method(self, method_to_call, other):
         """Call a specified relational method."""
         func = getattr(self._value, method_to_call)

tests/helpers/test_parameter.py

@@ -3,7 +3,7 @@
 
 import pytest
 
-from pyplumio.const import BYTE_UNDEFINED, STATE_OFF, STATE_ON
+from pyplumio.const import BYTE_UNDEFINED, STATE_OFF, STATE_ON, UnitOfMeasurement
 from pyplumio.devices.ecomax import EcoMAX
 from pyplumio.frames import Request
 from pyplumio.helpers.parameter import (
@@ -40,7 +40,9 @@ def fixture_parameter(ecomax: EcoMAX) -> Parameter:
         value=1,
         min_value=0,
         max_value=5,
-        description=ParameterDescription(name="test_parameter"),
+        description=ParameterDescription(
+            name="test_parameter", unit_of_measurement=UnitOfMeasurement.CELSIUS
+        ),
     )
 
 
@@ -155,10 +157,16 @@ def test_parameter_repr(parameter: Parameter) -> None:
     assert repr(parameter) == (
         "TestParameter(device=EcoMAX, "
         "description=ParameterDescription(name='test_parameter', "
-        "unit_of_measurement=None), value=1, min_value=0, max_value=5)"
+        "unit_of_measurement=<UnitOfMeasurement.CELSIUS: '°C'>), "
+        "value=1, min_value=0, max_value=5)"
     )
 
 
+def test_parameter_getattr(parameter: Parameter):
+    """Test getting attributes from the parameters description."""
+    assert parameter.unit_of_measurement == UnitOfMeasurement.CELSIUS
+
+
 @patch("asyncio.Queue.put")
 async def test_parameter_request_with_unchanged_value(
     mock_put, parameter: Parameter, bypass_asyncio_sleep, caplog