old_contents: # http://www.openstreetmap.org/way/313466665
  assert_has_feature(
      15, 5467, 12531, 'roads',
      { 'kind': 'piste',
        'piste_type': 'downhill',
        'piste_difficulty': 'easy',
        'id': 313466665 })
  
  # http://www.openstreetmap.org/way/313466720
  assert_has_feature(
      15, 5467, 12531, 'roads',
      { 'kind': 'piste',
        'piste_type': 'downhill',
        'piste_difficulty': 'expert',
        'id': 313466720 })
  
new_contents: # http://www.openstreetmap.org/way/313466665
  assert_has_feature(
      15, 5467, 12531, 'roads',
      { 'kind': 'piste',
        'piste_type': 'downhill',
        'piste_difficulty': 'easy',
        'id': 313466665 })
  
  # http://www.openstreetmap.org/way/313466720
  assert_has_feature(
      15, 5467, 12531, 'roads',
      { 'kind': 'piste',
        'piste_type': 'downhill',
        'piste_difficulty': 'expert',
        'id': 313466720 })
  
  # Way: 49'er (313466490) http://www.openstreetmap.org/way/313466490
  assert_has_feature(
      16, 10939, 25061, 'roads',
      { 'kind': 'piste',
        'piste_type': 'downhill',
        'piste_difficulty': 'intermediate',
        'id': 313466490 })
  
subject: Add piste test to catch dev issue