No unpack variants for property sets (#3911)

supervisor/utils/dbus.py

@@ -90,9 +90,11 @@ class DBus:
             proxy_interface.path,
         )
         try:
-            return await getattr(proxy_interface, method)(
-                *args, unpack_variants=unpack_variants
-            )
+            if unpack_variants:
+                return await getattr(proxy_interface, method)(
+                    *args, unpack_variants=True
+                )
+            return await getattr(proxy_interface, method)(*args)
         except DBusError as err:
             raise DBus.from_dbus_error(err)
 
@@ -299,7 +301,7 @@ class DBusCallWrapper:
 
             return _off_signal
 
-        if dbus_type in ["call", "get", "set"]:
+        if dbus_type in ["call", "get"]:
 
             def _method_wrapper(*args, unpack_variants: bool = True) -> Awaitable:
                 return DBus.call_dbus(
@@ -308,6 +310,13 @@ class DBusCallWrapper:
 
             return _method_wrapper
 
+        elif dbus_type == "set":
+
+            def _set_wrapper(*args) -> Awaitable:
+                return DBus.call_dbus(self._proxy, name, *args, unpack_variants=False)
+
+            return _set_wrapper
+
         # Didn't reach the dbus call yet, just happened to hit another interface. Return a wrapper
         return DBusCallWrapper(self.dbus, f"{self.interface}.{name}")
 

tests/api/test_supervisor.py

@@ -1,5 +1,6 @@
 """Test Supervisor API."""
 # pylint: disable=protected-access
+import asyncio
 from unittest.mock import patch
 
 from aiohttp.test_utils import TestClient
@@ -114,3 +115,17 @@ async def test_api_supervisor_options_auto_update(
     assert response.status == 200
 
     assert coresys.updater.auto_update is False
+
+
+async def test_api_supervisor_options_diagnostics(
+    api_client: TestClient, coresys: CoreSys, dbus: list[str]
+):
+    """Test changing diagnostics."""
+    await coresys.dbus.agent.connect(coresys.dbus.bus)
+    dbus.clear()
+
+    response = await api_client.post("/supervisor/options", json={"diagnostics": True})
+    await asyncio.sleep(0)
+
+    assert response.status == 200
+    assert dbus == ["/io/hass/os-io.hass.os.Diagnostics"]