--- /dev/null
+## Copyright (C) 2018-20xx CEA/DEN, EDF R&D
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library 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
+## Lesser General Public License for more details.
+##
+## You should have received a copy of the GNU Lesser General Public
+## License along with this library; if not, write to the Free Software
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##
+## See http:##www.salome-platform.org/ or
+## email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
+##
+
+from salome.shaper import model
+from GeomAPI import *
+
+model.begin()
+partSet = model.moduleDocument()
+Part_1 = model.addPart(partSet)
+Part_1_doc = Part_1.document()
+Box_1 = model.addBox(Part_1_doc, 10, 10, 10)
+Interpolation_1_objects = [model.selection("VERTEX", "[Box_1_1/Back][Box_1_1/Left][Box_1_1/Bottom]"), model.selection("VERTEX", "[Box_1_1/Front][Box_1_1/Left][Box_1_1/Bottom]"), model.selection("VERTEX", "[Box_1_1/Front][Box_1_1/Left][Box_1_1/Top]"), model.selection("VERTEX", "[Box_1_1/Front][Box_1_1/Right][Box_1_1/Top]")]
+Interpolation_1 = model.addInterpolation(Part_1_doc, Interpolation_1_objects, False, False)
+
+aShape = Interpolation_1.result().resultSubShapePair()[0].shape()
+assert(aShape.isEdge())
+assert(aShape.isPlanar() == False)
+
+model.end()