void read(String testFileName) throws IOException {
   File source = new File(testFileName);
   assertTrue(parser.read(source));
   assertNotNull(parser.getFormat());
   assertNotNull(parser.getAllRoutes());
   assertTrue(parser.getAllRoutes().size() > 0);
   assertNotNull("Cannot read route from " + source, parser.getTheRoute());
   assertTrue(parser.getTheRoute().getPositionCount() > 0);
 }