Fix Incorrect Mock Assertion in TestEvaluators for Python 3.12

EwoutH · EwoutH · commit 94234ee6f644 · 2023-11-17T14:09:53.000+01:00
This commit resolves an AttributeError in the test_ipyparallel_evaluator method of the TestEvaluators class. The error was caused by the use of a non-existent method called_once() on a mock object. The correct method, assert_called_once(), has been applied to ensure the proper assertion of the mocked method's call frequency. This change ensures the test aligns with the intended functionality and adheres to the correct usage of the unittest.mock library in Python.
diff --git a/test/test_em_framework/test_evaluators.py b/test/test_em_framework/test_evaluators.py
@@ -73,7 +73,7 @@ def test_ipyparallel_evaluator(
 
         with evaluators.IpyparallelEvaluator(model, client) as evaluator:
             evaluator.evaluate_experiments(10, 10, mocked_callback)
-            lb_view.map.called_once()
+            lb_view.map.assert_called_once()
 
     # Check if mpi4py is installed and if we're on a Linux environment
     try:
