Improve docstring and tests

pydeconz/models/light/cover.py

@@ -31,10 +31,7 @@ class CoverAction(enum.Enum):
 
 
 class Cover(LightBase):
-    """Cover and Damper class.
-
-    Position 0 means open and 100 means closed.
-    """
+    """Cover and Damper class."""
 
     raw: TypedCover
 
@@ -47,18 +44,23 @@ def is_open(self) -> bool:
     def lift(self) -> int:
         """Amount of closed position.
 
-        0 is fully open.
-        100 is fully closed.
+        Supported values:
+          0-100 - 0 is open / 100 is closed
         """
         return self.raw["state"]["lift"]
 
     @property
     def tilt(self) -> int | None:
         """Amount of tilt.
 
-        0 is fully open.
-        100 is fully closed.
+        Supported values:
+          0-100 - 0 is open / 100 is closed
         """
         if "tilt" in self.raw["state"]:
             return self.raw["state"]["tilt"]
         return None
+
+    @property
+    def supports_tilt(self) -> bool:
+        """Supports tilt."""
+        return "tilt" in self.raw["state"]

tests/lights/test_cover.py

@@ -63,6 +63,7 @@ async def test_light_cover(mock_aioresponse, deconz_light, deconz_called_with):
     assert cover.is_open is True
     assert cover.lift == 0
     assert cover.tilt is None
+    assert cover.supports_tilt is False
 
     assert cover.reachable is True
 
@@ -78,12 +79,15 @@ async def test_light_cover(mock_aioresponse, deconz_light, deconz_called_with):
     cover.register_callback(mock_callback := Mock())
     assert cover._callbacks
 
-    event = {"state": {"lift": 50, "open": True}}
-    cover.update(event)
+    cover.update({"state": {"lift": 50, "open": True}})
     assert cover.is_open is True
     assert cover.lift == 50
     mock_callback.assert_called_once()
     assert cover.changed_keys == {"state", "lift", "open"}
 
+    cover.update({"state": {"tilt": 25, "open": True}})
+    assert cover.tilt == 25
+    assert cover.supports_tilt is True
+
     cover.remove_callback(mock_callback)
     assert not cover._callbacks