Port regression test 888 to Pytests

testsuite/pytests/sli2py_regressions/test_issue_888.py

@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+#
+# test_issue_888.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_issue_888():
+    """
+    Ensure that the resolution is set as a multiple of tics.
+
+    This test verifies that setting the resolution without specifying the tics per ms
+    results in an error. It also checks that setting both the resolution and tics per ms
+    to incompatible values results in an error.
+
+    Author: Håkon Mørk, 2018-03-05
+    """
+
+    # Only setting resolution should fail
+    with pytest.raises(Exception):
+        nest.ResetKernel()
+        nest.SetKernelStatus({"resolution": 0.03125})
+
+    # Setting both resolution and tics per ms to incompatible values should fail
+    with pytest.raises(Exception):
+        nest.ResetKernel()
+        nest.SetKernelStatus({"tics_per_ms": 1000.0, "resolution": 0.03125})