private Map.Entry<TileCoord, List<TestUtils.ComparableFeature>> newTileEntry(int x, int y, int z,
    List<TestUtils.ComparableFeature> features) {
    return Map.entry(TileCoord.ofXYZ(x, y, z), features);
  }
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