new_contents: # http://www.openstreetmap.org/way/167274589
  # area 300363008
  assert_has_feature(
      16, 10818, 21900, 'landuse',
      { 'kind': 'national_park', 'id': 167274589, 'tier': 1,
        'min_zoom': 3 })
  
  # http://www.openstreetmap.org/relation/921675
  # area 30089300
  assert_has_feature(
      16, 14579, 29651, 'landuse',
      { 'kind': 'national_park', 'id': -921675, 'tier': 1,
        'min_zoom': 8 })
  assert_no_matching_feature(
      7, 28, 57, 'landuse',
      { 'kind': 'national_park', 'id': -921675 })
  
  # this is USFS, so demoted to tier 2 :-(
  # http://www.openstreetmap.org/way/34416231
  # area 86685400
  assert_has_feature(
      16, 18270, 25157, 'landuse',
      { 'kind': 'national_park', 'id': 34416231,
        'tier': 2, 'min_zoom': 8 })
  
subject: Add test for landuse tiers.