Fix non-expanded values in disconnect_vdi() assert

Signed-off-by: Gaëtan Lehmann <[email protected]>

Author: glehmann

lib/vm.py

@@ -311,7 +311,7 @@ def connect_vdi(self, vdi: VDI, device: str = "autodetect") -> str:
 
     def disconnect_vdi(self, vdi: VDI):
         logging.info(f"<< Unplugging VDI {vdi.uuid} from VM {self.uuid}")
-        assert vdi in self.vdis, "VDI {vdi.uuid} not in VM {self.uuid} VDI list"
+        assert vdi in self.vdis, f"VDI {vdi.uuid} not in VM {self.uuid} VDI list"
         vbd_uuid = self.host.xe("vbd-list", {
             "vdi-uuid": vdi.uuid,
             "vm-uuid": self.uuid