private PlanetilerResults runForBoundsTest(int minzoom, int maxzoom, String key, String value) throws Exception {
    return runWithReaderFeatures(
      Map.of("threads", "1", key, value),
      List.of(
        newReaderFeature(WORLD_POLYGON, Map.of())
      ),
      (in, features) -> features.polygon("layer")
        .setZoomRange(minzoom, maxzoom)
        .setBufferPixels(0)
    );
  }
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