Check for interpreter lock

Author: jan-janssen

tests/unit/backend/test_interactive_serial.py

@@ -1,5 +1,6 @@
 from threading import Thread
 import unittest
+import sys
 
 import cloudpickle
 import zmq
@@ -88,6 +89,7 @@ def test_main_as_thread_init_error(self):
         socket.close()
         context.term()
 
+    @unittest.skipIf(not sys._is_gil_enabled(), "Requires GIL to run")
     def test_submit_as_thread(self):
         context = zmq.Context()
         socket = context.socket(zmq.PAIR)