+aSession.finishOperation()
+# Test changing the arc start/end point
+aSession.startOperation()
+anArcStartPoint.setValue(anArcStartPoint.x(), 40.)
+anArcStartPoint.setValue(0., 50.)
+assert (math.hypot(anArcStartPoint.x() - 0., anArcStartPoint.y() - 50.) < 1.e-10)
+aSession.finishOperation()
+aSession.startOperation()
+anArcEndPoint.setValue(40., anArcEndPoint.y())
+anArcEndPoint.setValue(50., 0.)
+assert (math.hypot(anArcEndPoint.x() - 50., anArcEndPoint.y() - 0.) < 1.e-10)
+aSession.finishOperation()