old_contents: ##
  ## A selection of very tall peaks which should be visible at zoom 9.
  ##
  
  #http://www.openstreetmap.org/node/358800613
  # Mount Whitney, CA
  assert_has_feature(
      9, 87, 200, 'pois',
      { 'kind': 'peak', 'id': 358800613, 'elevation': 4421 })
  
  #http://www.openstreetmap.org/node/358915477
  # Mount Elbert, CO
  assert_has_feature(
      9, 104, 195, 'pois',
      { 'kind': 'peak', 'id': 358915477, 'elevation': 4397 })
  
  # http://www.openstreetmap.org/node/1744903493
  # Mount Rainier, WA (volcano)
  assert_has_feature(
      9, 82, 180, 'pois',
      { 'kind': 'volcano', 'id': 1744903493, 'elevation': 4392 })
  
  ##
  ## Some smaller ones which should be visible at a range of zooms
  ##
  
  def assert_feature_min_zoom(z, x, y, layer, props):
      assert_has_feature(z, x, y, layer, props)
      assert_no_matching_feature(z-1, x/2, y/2, layer, props)
  
  # http://www.openstreetmap.org/node/358792071
  # San Gorgonio Mountain
  assert_feature_min_zoom(
      10, 179, 408, 'pois',
      { 'kind': 'peak', 'id': 358792071, 'elevation': 3502 })
  
  #https://www.openstreetmap.org/node/358793535
  # Toro Peak
  assert_feature_min_zoom(
      11, 361, 821, 'pois',
      { 'kind': 'peak', 'id': 358793535, 'elevation': 2650 })
  
  #https://www.openstreetmap.org/node/549642731
  # Ventana Double Cone
  assert_feature_min_zoom(
      12, 663, 1604, 'pois',
      { 'kind': 'peak', 'id': 549642731, 'elevation': 1477 })
  
  #https://www.openstreetmap.org/node/358796064
  # Chamisal Mountain
  assert_feature_min_zoom(
      13, 1274, 3100, 'pois',
      { 'kind': 'peak', 'id': 358796064, 'elevation': 785 })
  
new_contents: ##
  ## A selection of very tall peaks which should be visible at zoom 9.
  ##
  
  #http://www.openstreetmap.org/node/358915477
  # Mount Elbert, CO
  assert_has_feature(
      9, 104, 195, 'pois',
      { 'kind': 'peak', 'id': 358915477, 'elevation': 4397 })
  
  # http://www.openstreetmap.org/node/1744903493
  # Mount Rainier, WA (volcano)
  assert_has_feature(
      9, 82, 180, 'pois',
      { 'kind': 'volcano', 'id': 1744903493, 'elevation': 4392 })
  
  ##
  ## Some smaller ones which should be visible at a range of zooms
  ##
  
  def assert_feature_min_zoom(z, x, y, layer, props):
      assert_has_feature(z, x, y, layer, props)
      assert_no_matching_feature(z-1, x/2, y/2, layer, props)
  
  # http://www.openstreetmap.org/node/358792071
  # San Gorgonio Mountain
  assert_feature_min_zoom(
      10, 179, 408, 'pois',
      { 'kind': 'peak', 'id': 358792071, 'elevation': 3502 })
  
  #https://www.openstreetmap.org/node/358793535
  # Toro Peak
  assert_feature_min_zoom(
      11, 361, 821, 'pois',
      { 'kind': 'peak', 'id': 358793535, 'elevation': 2650 })
  
  #https://www.openstreetmap.org/node/549642731
  # Ventana Double Cone
  assert_feature_min_zoom(
      12, 663, 1604, 'pois',
      { 'kind': 'peak', 'id': 549642731, 'elevation': 1477 })
  
  #https://www.openstreetmap.org/node/358796064
  # Chamisal Mountain
  assert_feature_min_zoom(
      13, 1274, 3100, 'pois',
      { 'kind': 'peak', 'id': 358796064, 'elevation': 785 })
  
subject: Remove deleted node from integration test