public List<Coordinate> z14CoordinateList(double... coords) {
    List<Coordinate> points = newCoordinateList(coords);
    points.forEach(c -> {
      c.x = GeoUtils.getWorldLon(0.5 + c.x * Z14_WIDTH);
      c.y = GeoUtils.getWorldLat(0.5 + c.y * Z14_WIDTH);
    });
    return points;
  }
In-memory tests with fake data and profiles to ensure all features work end-to-end.
planetiler-core/src/test/java/com/onthegomap/planetiler/PlanetilerTests.java