cleanup for test fixtures to help simplify test_gui fixture setup

daemon/core/emulator/coreemu.py

@@ -49,7 +49,7 @@ class CoreEmu:
         self.config = config
 
         # session management
-        self.session_id_gen = IdGen(_id=0)
+        self.session_id_gen = IdGen()
         self.sessions = {}
 
         # load services
@@ -79,6 +79,7 @@ class CoreEmu:
         :return: nothing
         """
         logging.info("shutting down all sessions")
+        self.session_id_gen.id = 0
         sessions = self.sessions.copy()
         self.sessions.clear()
         for _id in sessions:

daemon/core/emulator/session.py

@@ -1368,6 +1368,7 @@ class Session:
             while self.nodes:
                 _, node = self.nodes.popitem()
                 node.shutdown()
+        self.node_id_gen.id = 0
 
     def write_nodes(self):
         """