Add file "particle_to_dict.py"

testsuite/python/particle_to_dict.py

@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2020 The ESPResSo project
+#
+# This file is part of ESPResSo.
+#
+# ESPResSo 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 3 of the License, or
+# (at your option) any later version.
+#
+# ESPResSo 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import unittest as ut
+import numpy as np
+import espressomd
+
+
+class ParticleDictionaryTest(ut.TestCase):
+    box_l = 30.
+    system = espressomd.System(box_l=3 * [box_l])
+
+    def test(self):
+        p = self.system.part.add(
+            pos=np.random.uniform(
+                size=(
+                    10, 3)) * self.box_l)
+        pp = str(p)
+        pdict = p.to_dict()
+        p.remove()
+        self.system.part.add(pdict)
+        self.assertEqual(str(self.system.part.select()), pp)
+
+
+if __name__ == "__main__":
+    ut.main()