Changed test for WSCC9 to only check get_switching_info() (Parallel-i…

…n-Time#450)

#!!!!!!!!!! WARNING: FLAKEHEAVEN FAILED !!!!!!!!!!: 

#/Users/thomasbaumann/Documents/pySDC/pySDC/projects/DAE/tests/test_problems.py:2:1: F401 'warnings' imported but unused
#/Users/thomasbaumann/Documents/pySDC/pySDC/projects/DAE/tests/test_problems.py:319:121: E501 line too long (124 > 120 characters)
#/Users/thomasbaumann/Documents/pySDC/pySDC/projects/DAE/tests/test_problems.py:349:121: E501 line too long (132 > 120 characters)
#/Users/thomasbaumann/Documents/pySDC/pySDC/projects/DAE/tests/test_problems.py:361:121: E501 line too long (147 > 120 characters)
#/Users/thomasbaumann/Documents/pySDC/pySDC/projects/DAE/tests/test_problems.py:622:5: F401 'pySDC.helpers.stats_helper.get_sorted' imported but unused
#/Users/thomasbaumann/Documents/pySDC/pySDC/projects/DAE/tests/test_problems.py:673:29: F541 f-string is missing placeholders
#/Users/thomasbaumann/Documents/pySDC/pySDC/projects/DAE/tests/test_problems.py:676:25: F541 f-string is missing placeholders:

pySDC/projects/DAE/tests/test_problems.py

@@ -614,7 +614,7 @@ def test_WSCC9_update_YBus():
 
 @pytest.mark.timeout(360)
 @pytest.mark.base
-def test_WSCC9_SDC_detection():
+def test_WSCC9_get_switching_info():
     """
     Test if state function states a root.
     """
@@ -623,8 +623,6 @@ def test_WSCC9_SDC_detection():
     from pySDC.projects.DAE.problems.WSCC9BusSystem import WSCC9BusSystem
     from pySDC.projects.DAE.sweepers.fully_implicit_DAE import fully_implicit_DAE
     from pySDC.implementations.controller_classes.controller_nonMPI import controller_nonMPI
-    from pySDC.projects.PinTSimE.switch_estimator import SwitchEstimator
-    from pySDC.implementations.convergence_controller_classes.basic_restarting import BasicRestartingNonMPI
 
     dt = 0.75
     level_params = {
@@ -650,47 +648,32 @@ def test_WSCC9_SDC_detection():
         'logger_level': 30,
     }
 
-    switch_estimator_params = {
-        'tol': 1e-10,
-        'alpha': 0.97,
-    }
-
-    restarting_params = {
-        'max_restarts': 200,
-        'crash_after_max_restarts': False,
-    }
-
-    convergence_controllers = {
-        SwitchEstimator: switch_estimator_params,
-        BasicRestartingNonMPI: restarting_params,
-    }
-
     description = {
         'problem_class': WSCC9BusSystem,
         'problem_params': problem_params,
         'sweeper_class': fully_implicit_DAE,
         'sweeper_params': sweeper_params,
         'level_params': level_params,
         'step_params': step_params,
-        'convergence_controllers': convergence_controllers,
     }
 
     controller = controller_nonMPI(num_procs=1, controller_params=controller_params, description=description)
 
     t0 = 0.0
     Tend = dt
 
-    P = controller.MS[0].levels[0].prob
+    L = controller.MS[0].levels[0]
+    P = L.prob
     uinit = P.u_exact(t0)
 
     _, stats = controller.run(u0=uinit, t0=t0, Tend=Tend)
 
-    switches = get_sorted(stats, type='switch', sortby='time', recomputed=False)
-    assert len(switches) >= 1, 'ERROR: No events found!'
-    t_switch = [me[1] for me in switches][0]
-    assert np.isclose(
-        t_switch, 0.528458886745887, atol=1e-3
-    ), f'Found event does not match a threshold! Got {t_switch=}'
+    switch_detected, _, state_function = P.get_switching_info(L.u, L.time)
+
+    assert switch_detected, f"Event should found here, but no event is found!"
+
+    sign_change = True if state_function[0] * state_function[-1] < 0 else False
+    assert sign_change, f"State function does not have sign change"
 
 
 # @pytest.mark.base