Fix unique_id in Zeroconf flow (#36948)

homeassistant/components/daikin/config_flow.py

@@ -130,7 +130,7 @@ class FlowHandler(config_entries.ConfigFlow):
         """Prepare configuration for a discovered Daikin device."""
         _LOGGER.debug("Zeroconf user_input: %s", discovery_info)
         devices = Discovery().poll(ip=discovery_info[CONF_HOST])
-        await self.async_set_unique_id(next(iter(devices.values()))[KEY_MAC])
+        await self.async_set_unique_id(next(iter(devices))[KEY_MAC])
         self._abort_if_unique_id_configured()
         self.host = discovery_info[CONF_HOST]
         return await self.async_step_user()

tests/components/daikin/test_config_flow.py

@@ -47,7 +47,7 @@ def mock_daikin_discovery():
     with patch("homeassistant.components.daikin.config_flow.Discovery") as Discovery:
         Discovery().poll.return_value = {
             "127.0.01": {"mac": "AABBCCDDEEFF", "id": "test"}
-        }
+        }.values()
         yield Discovery