Downgrade getMetaInfo warning to debug for expected non-JSON responses

src/linkplay/bridge.py

@@ -159,7 +159,8 @@ async def update_status(self) -> None:
                     MetaInfo, dict[MetaInfoMetaData, str]
                 ] = await self.bridge.json_request(LinkPlayCommand.META_INFO)  # type: ignore[assignment]
             except LinkPlayInvalidDataException as exc:
-                if getattr(exc, "data", None) == "Failed":
+                raw = getattr(exc, "data", None)
+                if isinstance(raw, str) and raw.strip() in ("", "Failed"):
                     self.metainfo = {}
                 else:
                     raise

src/linkplay/utils.py

@@ -97,7 +97,11 @@ async def session_call_api_json(
         return json.loads(result)  # type: ignore
     except json.JSONDecodeError as jsonexc:
         url = API_ENDPOINT.format(endpoint, command)
-        LOGGER.warning("Unexpected json for %s: %s", url, jsonexc)
+        stripped = result.strip() if result else ""
+        if stripped in ("", "Failed"):
+            LOGGER.debug("Non-JSON response for %s: %r", url, stripped)
+        else:
+            LOGGER.warning("Unexpected json for %s: %s", url, jsonexc)
         raise LinkPlayInvalidDataException(
             message=f"Unexpected JSON ({result}) received from '{url}'", data=result
         ) from jsonexc

tests/linkplay/test_bridge.py

@@ -602,6 +602,32 @@ async def mock_session_call_api_json_side_effect(endpoint, session, command):
         mock_api.assert_called_with("http://1.2.3.4", None, LinkPlayCommand.META_INFO)
 
 
+async def test_meta_info_empty_response_handling():
+    """Test that the player handles an empty META_INFO response correctly."""
+
+    async def mock_session_call_api_json_side_effect(endpoint, session, command):
+        if command == LinkPlayCommand.META_INFO:
+            return ""
+        return "{}"
+
+    with patch(
+        "linkplay.utils.session_call_api",
+        new=AsyncMock(side_effect=mock_session_call_api_json_side_effect),
+    ):
+        mock_bridge = LinkPlayBridge(
+            endpoint=LinkPlayApiEndpoint(
+                protocol="http", port=80, endpoint="1.2.3.4", session=None
+            )
+        )
+        mock_bridge.device = MagicMock()
+        mock_bridge.device.manufacturer = MANUFACTURER_WIIM
+
+        player = LinkPlayPlayer(mock_bridge)
+        await player.update_status()
+
+        assert player.metainfo == {}
+
+
 async def test_audio_output_control():
     """Test that the player handles a audio output control correctly."""