TST: cover _hashSymOpList utility

Author: pavoljuhas

src/diffpy/structure/tests/testspacegroups.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+##############################################################################
+#
+# diffpy.structure  Complex Modeling Initiative
+#                   (c) 2019 Brookhaven Science Associates,
+#                   Brookhaven National Laboratory.
+#                   All rights reserved.
+#
+# File coded by:    Pavol Juhas
+#
+# See AUTHORS.txt for a list of people who contributed.
+# See LICENSE.txt for license information.
+#
+##############################################################################
+
+"""Unit tests for diffpy.structure.spacegroups
+"""
+
+
+import unittest
+
+from diffpy.structure.spacegroups import SpaceGroupList, _hashSymOpList
+
+# ----------------------------------------------------------------------------
+
+class TestRoutines(unittest.TestCase):
+
+    def setUp(self):
+        return
+
+
+    def test__hashSymOpList(self):
+        "verify _hashSymOpList is unique for each spacegroup"
+        hset = set(_hashSymOpList(sg.symop_list) for sg in SpaceGroupList)
+        self.assertEqual(len(SpaceGroupList), len(hset))
+        return
+
+# End of class TestRoutines
+
+# ----------------------------------------------------------------------------
+
+if __name__ == '__main__':
+    unittest.main()