Merge pull request #2757 from med-ayssar/test_set_start_stop_origin

Convert test-set-start-stop-origin.sli to pytest.

Author: heplesser

testsuite/pytests/sli2py_recording/test_set_start_stop_origin.py

@@ -0,0 +1,128 @@
+# -*- coding: utf-8 -*-
+#
+# test_set_start_stop_origin.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/>.
+
+"""
+Test if `start`, `stop` and `origin` are set properly.
+For all models (i.e, Devices) having `start`, `stop`, and `origin` parameters, this test
+checks the following:
+    - Default values can be set successfully.
+    - Nodes are created with correct default values.
+    - Nodes can be created with correct default values from the command line.
+    - Parameters can be set via SetStatus.
+"""
+
+import nest
+import numpy as np
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def reset():
+    nest.ResetKernel()
+
+
+def device_attributes():
+    return set(["start", "stop", "origin"])
+
+
+def get_devices():
+    all_models = nest.node_models
+    models = [m for m in all_models if len(device_attributes().intersection(nest.GetDefaults(m).keys())) > 0]
+    return models
+
+
+@pytest.mark.parametrize("device", get_devices())
+def test_one_attr_implies_all_attr(device):
+    """Check that any model that has one of the attributes `start`, ``stop` or `origin`, it must have all"""
+
+    model_defaults = nest.GetDefaults(device)
+    required_all_attr = device_attributes()
+
+    actual = len(required_all_attr.intersection(model_defaults.keys()))
+    excepted = len(required_all_attr)
+
+    assert actual == excepted
+
+
+@pytest.mark.parametrize("device", get_devices())
+def test_initial_default_value(device):
+    """Ensure that no default value is equal to test value."""
+
+    model_defaults = nest.GetDefaults(device, device_attributes())
+
+    unexpected_value = 1234.0 * 42
+    assert np.all(model_defaults != unexpected_value)
+
+
+@pytest.mark.parametrize("device", get_devices())
+@pytest.mark.parametrize("attr", device_attributes())
+def test_setting_new_default_value(device, attr):
+    """Check that default value of each attribute can be set."""
+
+    value = 1234.0 * 42
+    nest.SetDefaults(device, {attr: value})
+
+    actual = nest.GetDefaults(device, attr)
+
+    assert actual == value
+
+
+@pytest.mark.parametrize("device", get_devices())
+@pytest.mark.parametrize("attr", device_attributes())
+def test_inheriting_new_default_on_instance(device, attr):
+    """Check that default value of each attribute are transferred to the model instance."""
+
+    value = 1234.0 * 42
+
+    nest.SetDefaults(device, {attr: value})
+
+    actual = nest.Create(device).get(attr)
+
+    assert actual == value
+
+
+@pytest.mark.parametrize("device", get_devices())
+@pytest.mark.parametrize("attr", device_attributes())
+def test_setting_new_value_on_create(device, attr):
+    """Check that values can be set on creation."""
+
+    value = 1234.0 * 42
+
+    device_instance = nest.Create(device, params={attr: value})
+
+    actual = device_instance.get(attr)
+
+    assert actual == value
+
+
+@pytest.mark.parametrize("device", get_devices())
+@pytest.mark.parametrize("attr", device_attributes())
+def test_setting_new_value_after_create(device, attr):
+    """Check that values can be set on model instances."""
+
+    value = 1234.0 * 42
+
+    device_instance = nest.Create(device)
+    device_instance.set({attr: value})
+
+    actual = device_instance.get(attr)
+
+    assert actual == value