SFSFilterVisitor visitor = new SFSFilterVisitor(true);
/* Testing for point geometry*/
GeometryFactory gf = new GeometryFactory();
Point p = gf.createPoint(new Coordinate(100.1, 0.1));
DWithin dws = FF.dwithin(FF.property("Point"), FF.literal(p), 10, "");
visitor.visit(dws, null);
visitor.finish(builder, false);
assertEquals(URL_LAYER_ASIA + "?epsg=&lat=0.1&lon=100.1&tolerance=10.0", URLDecoder.decode(builder.toString(),"UTF-8"));
}