+anArcStartPoint = geomDataAPI_Point2D(aSketchArc.attribute("ArcStartPoint"))
+anArcStartPoint.setValue(0., 50.)
+anArcEndPoint = geomDataAPI_Point2D(aSketchArc.attribute("ArcEndPoint"))
+anArcEndPoint.setValue(50., 0.)
+aSession.finishOperation()
+assert (model.dof(aSketchFeature) == 5)
+# Test changing the arc start/end point
+aSession.startOperation()
+anArcStartPoint.setValue(anArcStartPoint.x(), 40.)