Merge pull request #3458 from jessica-mitchell/sli2py_voltmeter_reset

Port unittest/test_voltmeter_reset to Pytests

Author: heplesser

testsuite/pytests/sli2py_other/test_voltmeter_reset.py

@@ -0,0 +1,63 @@
+# -*- coding: utf-8 -*-
+#
+# test_voltmeter_reset.py
+#
+# This file is part of NEST.
+#
+# Copyright (C) 2004 The NEST Initiative
+#
+# NEST is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# NEST is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with NEST.  If not, see <http://www.gnu.org/licenses/>.
+
+import nest
+import pytest
+
+
+def test_voltmeter_reset():
+    """
+    Test if resetting works on voltmeter.
+
+    The voltmeter records from iaf_psc_alpha to memory, checks if the proper number
+    of data points is acquired, deleted on reset, and recorded again on further
+    simulation. This test ascertains that also data stored in the derived recorder
+    class, not only in RecordingDevice, is reset.
+    """
+
+    nest.ResetKernel()
+
+    n = nest.Create("iaf_psc_alpha")
+    vm = nest.Create("voltmeter")
+    vm.set({"interval": 1.0})
+
+    nest.Connect(vm, n)
+
+    # Simulate and check initial recording
+    nest.Simulate(10.5)
+    events = vm.events
+    assert vm.n_events == 10
+    assert len(events["times"]) == 10
+    assert len(events["V_m"]) == 10
+
+    # Reset voltmeter and check
+    vm.set({"n_events": 0})
+    events = vm.events
+    assert vm.n_events == 0
+    assert len(events["times"]) == 0
+    assert len(events["V_m"]) == 0
+
+    # Simulate more and check recording
+    nest.Simulate(5.0)
+    events = vm.events
+    assert vm.n_events == 5
+    assert len(events["times"]) == 5
+    assert len(events["V_m"]) == 5