--- /dev/null
+## Copyright (C) 2014-2017 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>
+##
+
+# Test of deep nested results history. FuseFaces operation.
+# Check the groups of initial solids moved to the end contain the corresponding
+# results, but merged faces.
+
+from salome.shaper import model
+
+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)
+Cylinder_1 = model.addCylinder(Part_1_doc, model.selection("VERTEX", "PartSet/Origin"), model.selection("EDGE", "PartSet/OZ"), 5, 10)
+Partition_1 = model.addPartition(Part_1_doc, [model.selection("SOLID", "Cylinder_1_1"), model.selection("SOLID", "Box_1_1")])
+Union_1_objects = [model.selection("SOLID", "Partition_1_1_1"), model.selection("SOLID", "Partition_1_1_2"), model.selection("SOLID", "Partition_1_1_3")]
+Union_1 = model.addUnion(Part_1_doc, Union_1_objects)
+Group_1 = model.addGroup(Part_1_doc, [model.selection("SOLID", "Union_1_1")])
+Group_2_objects = [model.selection("FACE", "Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1"), model.selection("FACE", "Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_2"), model.selection("FACE", "Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_3"), model.selection("FACE", "Partition_1_1_2/Modified_Face&Box_1_1/Bottom&Cylinder_1_1/Face_3"), model.selection("FACE", "Partition_1_1_2/Modified_Face&Box_1_1/Top&Cylinder_1_1/Face_2"), model.selection("FACE", "Partition_1_1_3/Modified_Face&Box_1_1/Back"), model.selection("FACE", "Partition_1_1_3/Modified_Face&Box_1_1/Bottom"), model.selection("FACE", "Partition_1_1_3/Modified_Face&Box_1_1/Top"), model.selection("FACE", "Box_1_1/Right"), model.selection("FACE", "Partition_1_1_3/Modified_Face&Box_1_1/Left"), model.selection("FACE", "Box_1_1/Front")]
+Group_2 = model.addGroup(Part_1_doc, Group_2_objects)
+Group_3_objects = [model.selection("EDGE", "[Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_3]"), model.selection("EDGE", "[Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_2][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1]"), model.selection("EDGE", "([Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_3])(Partition_1_1_3/Generated_Edge&Box_1_1/Back&Cylinder_1_1/Face_1)([Partition_1_1_3/Modified_Face&Box_1_1/Back][Partition_1_1_3/Modified_Face&Box_1_1/Bottom])([Partition_1_1_3/Modified_Face&Box_1_1/Bottom][Partition_1_1_2/Modified_Face&Box_1_1/Bottom&Cylinder_1_1/Face_3])_Union_1_1"), model.selection("EDGE", "[Partition_1_1_3/Modified_Face&Box_1_1/Back][Partition_1_1_3/Modified_Face&Box_1_1/Bottom]"), model.selection("EDGE", "[Partition_1_1_3/Modified_Face&Box_1_1/Back][Box_1_1/Right]"), model.selection("EDGE", "Partition_1_1_3/Generated_Edge&Box_1_1/Back&Cylinder_1_1/Face_1"), model.selection("EDGE", "([Partition_1_1_2/Modified_Face&Box_1_1/Top&Cylinder_1_1/Face_2][Partition_1_1_3/Modified_Face&Box_1_1/Top])([Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_2][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1])([Partition_1_1_3/Modified_Face&Box_1_1/Top][Partition_1_1_3/Modified_Face&Box_1_1/Back])(Partition_1_1_3/Generated_Edge&Box_1_1/Back&Cylinder_1_1/Face_1)_Union_1_1"), model.selection("EDGE", "[Partition_1_1_3/Modified_Face&Box_1_1/Top][Partition_1_1_3/Modified_Face&Box_1_1/Back]"), model.selection("EDGE", "([Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_3/Modified_Face&Box_1_1/Left])([Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_3])([Partition_1_1_3/Modified_Face&Box_1_1/Left][Partition_1_1_3/Modified_Face&Box_1_1/Bottom])([Partition_1_1_3/Modified_Face&Box_1_1/Bottom][Partition_1_1_2/Modified_Face&Box_1_1/Bottom&Cylinder_1_1/Face_3])_Union_1_1"), model.selection("EDGE", "[Partition_1_1_3/Modified_Face&Box_1_1/Bottom][Partition_1_1_2/Modified_Face&Box_1_1/Bottom&Cylinder_1_1/Face_3]"), model.selection("EDGE", "[Partition_1_1_2/Modified_Face&Box_1_1/Top&Cylinder_1_1/Face_2][Partition_1_1_3/Modified_Face&Box_1_1/Top]"), model.selection("EDGE", "([Partition_1_1_2/Modified_Face&Box_1_1/Top&Cylinder_1_1/Face_2][Partition_1_1_3/Modified_Face&Box_1_1/Top])([Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_2][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1])([Partition_1_1_3/Modified_Face&Box_1_1/Top][Partition_1_1_3/Modified_Face&Box_1_1/Left])([Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_3/Modified_Face&Box_1_1/Left])_Union_1_1"), model.selection("EDGE", "[Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_3/Modified_Face&Box_1_1/Left]"), model.selection("EDGE", "[Partition_1_1_3/Modified_Face&Box_1_1/Top][Box_1_1/Right]"), model.selection("EDGE", "[Box_1_1/Right][Partition_1_1_3/Modified_Face&Box_1_1/Bottom]"), model.selection("EDGE", "[Partition_1_1_3/Modified_Face&Box_1_1/Left][Partition_1_1_3/Modified_Face&Box_1_1/Bottom]"), model.selection("EDGE", "[Box_1_1/Front][Partition_1_1_3/Modified_Face&Box_1_1/Left]"), model.selection("EDGE", "[Partition_1_1_3/Modified_Face&Box_1_1/Top][Partition_1_1_3/Modified_Face&Box_1_1/Left]"), model.selection("EDGE", "[Box_1_1/Front][Partition_1_1_3/Modified_Face&Box_1_1/Bottom]"), model.selection("EDGE", "[Box_1_1/Right][Box_1_1/Front]"), model.selection("EDGE", "[Partition_1_1_3/Modified_Face&Box_1_1/Top][Box_1_1/Front]")]
+Group_3 = model.addGroup(Part_1_doc, Group_3_objects)
+Group_4_objects = [model.selection("VERTEX", "[Partition_1_1_3/Modified_Face&Box_1_1/Top][Box_1_1/Front][Partition_1_1_3/Modified_Face&Box_1_1/Left]"), model.selection("VERTEX", "[Partition_1_1_2/Modified_Face&Box_1_1/Top&Cylinder_1_1/Face_2][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_2][Partition_1_1_3/Modified_Face&Box_1_1/Top][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_3/Modified_Face&Box_1_1/Left]"), model.selection("VERTEX", "[Box_1_1/Front][Partition_1_1_3/Modified_Face&Box_1_1/Left][Partition_1_1_3/Modified_Face&Box_1_1/Bottom]"), model.selection("VERTEX", "[_weak_name_10_Union_1_1]e[_weak_name_4_Union_1_1]e"), model.selection("VERTEX", "[Partition_1_1_3/Modified_Face&Box_1_1/Top][Box_1_1/Right][Box_1_1/Front]"), model.selection("VERTEX", "[Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_3/Modified_Face&Box_1_1/Left][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_3][Partition_1_1_3/Modified_Face&Box_1_1/Bottom][Partition_1_1_2/Modified_Face&Box_1_1/Bottom&Cylinder_1_1/Face_3]"), model.selection("VERTEX", "[Partition_1_1_2/Modified_Face&Box_1_1/Top&Cylinder_1_1/Face_2][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_2][Partition_1_1_3/Modified_Face&Box_1_1/Top][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_3/Modified_Face&Box_1_1/Back]"), model.selection("VERTEX", "[Box_1_1/Right][Box_1_1/Front][Partition_1_1_3/Modified_Face&Box_1_1/Bottom]"), model.selection("VERTEX", "[_weak_name_3_Union_1_1]e[_weak_name_9_Union_1_1]e"), model.selection("VERTEX", "[Partition_1_1_3/Modified_Face&Box_1_1/Top][Partition_1_1_3/Modified_Face&Box_1_1/Back][Box_1_1/Right]"), model.selection("VERTEX", "[Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_1][Partition_1_1_3/Modified_Face&Box_1_1/Back][Partition_1_1_1/Modified_Face&Cylinder_1_1/Face_3][Partition_1_1_3/Modified_Face&Box_1_1/Bottom][Partition_1_1_2/Modified_Face&Box_1_1/Bottom&Cylinder_1_1/Face_3]"), model.selection("VERTEX", "[Partition_1_1_3/Modified_Face&Box_1_1/Back][Box_1_1/Right][Partition_1_1_3/Modified_Face&Box_1_1/Bottom]")]
+Group_4 = model.addGroup(Part_1_doc, Group_4_objects)
+FusionFaces_1 = model.addFusionFaces(Part_1_doc, model.selection("SOLID", "Union_1_1"))
+model.do()
+# move groups to the end
+Part_1_doc.moveFeature(Group_1.feature(), FusionFaces_1.feature())
+Part_1_doc.moveFeature(Group_2.feature(), Group_1.feature())
+Part_1_doc.moveFeature(Group_3.feature(), Group_2.feature())
+Part_1_doc.moveFeature(Group_4.feature(), Group_3.feature())
+model.end()
+
+from ModelAPI import *
+
+aFactory = ModelAPI_Session.get().validators()
+
+# number of solids should be the same
+selectionList = Group_1.feature().selectionList("group_list")
+assert(selectionList.size() == 1)
+assert(aFactory.validate(Group_1.feature()))
+
+# same-plane faces should be merged
+selectionList = Group_2.feature().selectionList("group_list")
+assert(selectionList.size() == 11)
+assert(aFactory.validate(Group_2.feature()))
+
+# shared edges of merged faces should be deleted
+selectionList = Group_3.feature().selectionList("group_list")
+assert(selectionList.size() == 15)
+assert(aFactory.validate(Group_3.feature()))
+
+selectionList = Group_4.feature().selectionList("group_list")
+assert(selectionList.size() == 10)
+assert(aFactory.validate(Group_4.feature()))
+
+assert(model.checkPythonDump())
