--- /dev/null
+# Copyright (C) 2014-2021 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
+#
+
+from salome.shaper import model
+
+model.begin()
+partSet = model.moduleDocument()
+
+### Create Sketch_1
+Sketch_1 = model.addSketch(partSet, model.defaultPlane("XOY"))
+SketchProjection_1 = Sketch_1.addProjection(model.selection("VERTEX", "Origin"), False)
+SketchPoint_1 = SketchProjection_1.createdFeature()
+SketchCircle_1 = Sketch_1.addCircle(0, 0, 50)
+Sketch_1.setCoincident(SketchPoint_1.result(), SketchCircle_1.center())
+model.do()
+
+### Create Sketch_2 with reference to Sketch_1 circle
+Sketch_2 = model.addSketch(partSet, model.defaultPlane("XOY"))
+SketchProjection_2 = Sketch_2.addProjection(model.selection("EDGE", "Sketch_1/SketchCircle_1_2"), False)
+SketchCircle_2 = SketchProjection_2.createdFeature()
+SketchCircle_3 = Sketch_2.addCircle(34.92852513931564, 34.57180354201876, 20)
+Sketch_2.setCoincident(SketchCircle_2.results()[1], SketchCircle_3.center())
+model.do()
+
+### Create Part_1: Extrusion of Sketch_1
+Part_1 = model.addPart(partSet)
+Part_1_doc = Part_1.document()
+Extrusion_1 = model.addExtrusion(Part_1_doc, [model.selection("FACE", "PartSet/Sketch_1/Face-SketchCircle_1_2f")], model.selection(), 10, 0, "Faces|Wires")
+model.do()
+
+### Create Part_2: Extrusion of Sketch_2
+Part_2 = model.addPart(partSet)
+Part_2_doc = Part_2.document()
+Extrusion_2 = model.addExtrusion(Part_2_doc, [model.selection("FACE", "PartSet/Sketch_2/Face-SketchCircle_3_2f")], model.selection(), 20, 0, "Faces|Wires")
+model.do()
+
+### Create Placement of Part_2 over a Part_1
+Placement_1 = model.addPlacement(partSet, [model.selection("COMPOUND", "Part_2/")], model.selection("FACE", "Part_2/Extrusion_1_1/From_Face"), model.selection("FACE", "Part_1/Extrusion_1_1/To_Face"), centering = True, keepSubResults = True)
+
+### Create independent Part_3
+Part_3 = model.addPart(partSet)
+Part_3_doc = Part_3.document()
+Sketch_3 = model.addSketch(Part_3_doc, model.defaultPlane("XOY"))
+SketchCircle_4 = Sketch_3.addCircle(-60, 65, 10)
+model.do()
+Extrusion_3 = model.addExtrusion(Part_3_doc, [model.selection("FACE", "Sketch_1/Face-SketchCircle_1_2r")], model.selection(), 10, 0, "Faces|Wires")
+model.do()
+
+model.end()
+
+# test the movement of parts ability and produced errors
+
+# checking ability to move theWhat to position after theTo and produced error theError
+def checkMovement(theWhat, theTo, theError):
+ aWhatList = model.FeatureList()
+ aWhatList.append(theWhat.feature())
+ if not theTo is None and not isinstance(theTo, model.ModelAPI_Object):
+ theTo = theTo.feature()
+ anError = model.validateMovement(theTo, aWhatList).strip()
+ aListCheck = theError.split('\n')
+ aListGet = anError.split('\n')
+ assert(len(aListCheck) == len(aListGet))
+ for anErr in aListCheck:
+ #print("Looking for " + anErr + " in " + str(aListGet))
+ assert(aListGet.count(anErr) == 1)
+
+# movement to very first location actually means movement after the first invisible objects, coordinate system hidden ones
+aLastHidden = None
+for aFeat in partSet.allObjects():
+ if aFeat.isInHistory():
+ break
+ aLastHidden = model.objectToFeature(aFeat)
+
+checkMovement(Part_1, None, 'Part_1 -> Origin Sketch_1')
+checkMovement(Part_1, aLastHidden, 'Part_1 -> Sketch_1')
+checkMovement(Part_1, Sketch_1, 'Part_1 -> Sketch_1')
+checkMovement(Part_1, Sketch_2, '')
+checkMovement(Part_1, Part_2, '')
+checkMovement(Part_1, Placement_1, 'Placement_1 -> Part_1')
+checkMovement(Part_1, Part_3, 'Placement_1 -> Part_1')
+
+checkMovement(Part_2, None, 'Part_2 -> Origin Sketch_1 Sketch_2')
+checkMovement(Part_2, aLastHidden, 'Part_2 -> Sketch_1 Sketch_2')
+checkMovement(Part_2, Sketch_1, 'Part_2 -> Sketch_2 Sketch_1') # in GUI this is not the case, because it drops after invisible sketch components
+checkMovement(Part_2, Sketch_2, 'Part_2 -> Sketch_2') # in GUI this is not the case, because it drops after invisible sketch components
+checkMovement(Part_2, Part_1, '')
+checkMovement(Part_2, Placement_1, 'Placement_1 -> Part_2')
+checkMovement(Part_2, Part_3, 'Placement_1 -> Part_2')
+
+checkMovement(Part_3, None, '')
+checkMovement(Part_3, aLastHidden, '')
+checkMovement(Part_3, Sketch_1, '')
+checkMovement(Part_3, Sketch_2, '')
+checkMovement(Part_3, Part_1, '')
+checkMovement(Part_3, Part_2, '')
+checkMovement(Part_3, Placement_1, '')
+
+# do movement Part_2 after Sketch_2
+anAfterSketch_2 = partSet.nextFeature(Part_1.feature(), True)
+model.begin()
+partSet.moveFeature(Part_2.feature(), anAfterSketch_2)
+model.end()
+# check the movement is performed
+anAfter = partSet.nextFeature(anAfterSketch_2)
+assert(anAfter.name() == 'Part_2')
+anAfter = partSet.nextFeature(anAfter)
+assert(anAfter.name() == 'Part_1')
+anAfter = partSet.nextFeature(anAfter)
+assert(anAfter.name() == 'Placement_1')
