Source code for nest.tests.test_create

# -*- coding: utf-8 -*-
#
# test_create.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/>.

"""
Creation tests
"""

import unittest
import warnings
import nest


[docs]@nest.check_stack
class CreateTestCase(unittest.TestCase):
    """Creation tests"""

[docs]    def test_ModelCreate(self):
        """Model Creation"""

        nest.ResetKernel()

        for model in nest.Models(mtype='nodes'):
            node = nest.Create(model)
            self.assertGreater(node[0], 0)

[docs]    def test_ModelCreateN(self):
        """Model Creation with N"""

        nest.ResetKernel()

        num_nodes = 10
        for model in nest.Models(mtype='nodes'):
            nodes = nest.Create(model, num_nodes)
            self.assertEqual(len(nodes), num_nodes)

[docs]    def test_ModelCreateNdict(self):
        """Model Creation with N and dict"""

        nest.ResetKernel()

        num_nodes = 10
        voltage = 12.0
        n = nest.Create('iaf_psc_alpha', num_nodes, {'V_m': voltage})

        self.assertEqual(nest.GetStatus(n, 'V_m'), (voltage, ) * num_nodes)

        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter("always")
            self.assertRaises(TypeError, nest.Create,
                              'iaf_psc_alpha', 10, tuple())
            self.assertTrue(issubclass(w[-1].category, UserWarning))

[docs]    def test_ModelDicts(self):
        """IAF Creation with N and dicts"""

        nest.ResetKernel()

        num_nodes = 10
        V_m = (0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0)
        n = nest.Create('iaf_psc_alpha', num_nodes, [{'V_m': v} for v in V_m])

        self.assertEqual(nest.GetStatus(n, 'V_m'), V_m)

[docs]    def test_CopyModel(self):
        """CopyModel"""

        nest.ResetKernel()

        nest.CopyModel('iaf_psc_alpha', 'new_neuron', {'V_m': 10.0})
        vm = nest.GetDefaults('new_neuron')['V_m']
        self.assertEqual(vm, 10.0)

        n = nest.Create('new_neuron', 10)
        vm = nest.GetStatus([n[0]])[0]['V_m']
        self.assertEqual(vm, 10.0)

        nest.CopyModel('static_synapse', 'new_synapse', {'weight': 10.})
        nest.Connect([n[0]], [n[1]], syn_spec='new_synapse')
        w = nest.GetDefaults('new_synapse')['weight']
        self.assertEqual(w, 10.0)

        self.assertRaisesRegex(
            nest.NESTError, "NewModelNameExists",
            nest.CopyModel, 'iaf_psc_alpha', 'new_neuron')


[docs]def suite():
    suite = unittest.makeSuite(CreateTestCase, 'test')
    return suite


[docs]def run():
    runner = unittest.TextTestRunner(verbosity=2)
    runner.run(suite())

if __name__ == "__main__":
    run()