// test create LinearRing
behaviour=new AcceptChangesBehaviour(LinearRing.class, false);
handler.getCurrentGeom().setChanged(true);
command = behaviour.getCommand(handler);
command.setMap(handler.getContext().getMap());
command.run(new NullProgressMonitor());
assertEquals(4, ((GeometryCollection)feature.getDefaultGeometry()).getGeometryN(0).getCoordinates().length);
assertEquals(toCoord(bb,10,10), ((GeometryCollection)feature.getDefaultGeometry()).getGeometryN(0).getCoordinates()[0]);
assertEquals(toCoord(bb,40,10), ((GeometryCollection)feature.getDefaultGeometry()).getGeometryN(0).getCoordinates()[1]);
assertEquals(toCoord(bb,10,10), ((GeometryCollection)feature.getDefaultGeometry()).getGeometryN(0).getCoordinates()[2]);
assertEquals(toCoord(bb,10,10), ((GeometryCollection)feature.getDefaultGeometry()).getGeometryN(0).getCoordinates()[3]);