Merge pull request #3435 from heplesser/sli2py_2119

Port mpitests/issue_2119.sli to python

Author: heplesser

testsuite/mpitests/issue-2119.sli

@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+#
+# test_issue_2119.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 pandas as pd
+import pytest
+from mpi_test_wrapper import MPITestAssertEqual
+
+# use default parameters for double-valued params
+random_params = [
+    ["'exponential'", {}],
+    ["'normal'", {}],
+    ["'lognormal'", {}],
+    ["'uniform'", {}],
+    ["'uniform_int'", {"max": 10}],
+]
+
+
+@pytest.mark.parametrize(["kind", "specs"], random_params)
+@MPITestAssertEqual([1, 2, 4])
+def test_issue_2119(kind, specs):
+    """
+    Confirm that randomized node parameters work correctly under MPI and OpenMP.
+    """
+
+    import nest
+    import pandas as pd
+
+    nest.ResetKernel()
+    nest.total_num_virtual_procs = 4
+
+    nrn = nest.Create("iaf_psc_alpha", n=4, params={"V_m": nest.CreateParameter(kind, specs)})
+
+    pd.DataFrame.from_dict(nrn.get(["global_id", "V_m"])).dropna().to_csv(
+        OTHER_LABEL.format(nest.num_processes, nest.Rank()), index=False
+    )  # noqa: F821