Port regression test 507 to Pytests

testsuite/pytests/sli2py_regressions/test_ticket_507.py

@@ -0,0 +1,69 @@
+# -*- coding: utf-8 -*-
+#
+# test_ticket_507.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/>.
+
+"""
+Regression test for Ticket #507.
+
+Ensure that spike_generator throws exception on SetStatus if off-grid times are set,
+unless precise_times is set.
+"""
+import nest
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def prepare_kernel():
+    nest.ResetKernel()
+    nest.resolution = 0.1
+
+
+def test_spike_generator_on_grid_time():
+    """
+    Setting a single on-grid spike time with precise_times=False should succeed.
+    """
+    sg = nest.Create("spike_generator")
+    sg.set({"spike_times": [0.2], "precise_times": False})
+
+
+def test_spike_generator_off_grid_times_should_fail():
+    """
+    Setting multiple spike times, some off-grid, with precise_times=False should fail.
+    """
+    sg = nest.Create("spike_generator")
+    with pytest.raises(nest.NESTError):
+        sg.set({"spike_times": [0.1, 0.123456789, 0.22345567854], "precise_times": False})
+
+
+def test_spike_generator_single_off_grid_time_should_fail():
+    """
+    Setting a single off-grid spike time with precise_times=False should fail.
+    """
+    sg = nest.Create("spike_generator")
+    with pytest.raises(nest.NESTError):
+        sg.set({"spike_times": [0.123456789], "precise_times": False})
+
+
+def test_spike_generator_precise_times_true_should_pass():
+    """
+    Setting a single off-grid spike time with precise_times=True should succeed.
+    """
+    sg = nest.Create("spike_generator")
+    sg.set({"spike_times": [0.123456789], "precise_times": True})