Merge pull request #2719 from janskaar/test_mip_corrdet_topy

Port test_mip_corrdet to py

testsuite/pytests/test_mip_corrdet.py

@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+#
+# test_mip_corrdet.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/>.
+"""
+Tests correlation_detector connected to two parrot_neurons
+receiving input from a mip_generator. Compares resulting correlation
+to known value.
+"""
+
+
+import nest
+import pytest
+import numpy.testing as nptest
+
+
+def test_correlation_detector_mip():
+    # Cross check generated with cross_check_test_mip_corrdet.py
+    expected_hist = [2335, 2317, 2364, 2370, 2376, 2336, 2308, 2325, 2292, 2393,
+                     4806, 2378, 2373, 2356, 2357, 2400, 2420, 2325, 2367, 2338, 2293]
+
+    nest.ResetKernel()
+
+    nest.set(rng_seed=12345)
+
+    mg = nest.Create("mip_generator")
+    mg.set(rate=100, p_copy=0.5)
+    cd = nest.Create("correlation_detector")
+    cd.set(tau_max=100, delta_tau=10)
+
+    pn1 = nest.Create("parrot_neuron")
+    pn2 = nest.Create("parrot_neuron")
+
+    nest.Connect(mg, pn1)
+    nest.Connect(mg, pn2)
+
+    syn_spec = {"weight": 1., "receptor_type": 0}
+    nest.Connect(pn1, cd, syn_spec=syn_spec)
+
+    syn_spec = {"weight": 1., "receptor_type": 1}
+    nest.Connect(pn2, cd, syn_spec=syn_spec)
+
+    nest.Simulate(100000.)
+
+    hist = cd.get("histogram")
+    nptest.assert_array_equal(hist, expected_hist)