code: def test_dataset_profile_property_untiled(data, path_rgb_byte_tif):
      """An untiled dataset's profile has block y sizes"""
      with rasterio.open(path_rgb_byte_tif) as src:
          assert "blockxsize" not in src.profile
          assert src.profile["blockysize"] == 3
          assert src.profile["tiled"] is False
  
imports: import pickle
  import pytest
  import rasterio
  from rasterio.profiles import Profile, DefaultGTiffProfile
  from rasterio.profiles import default_gtiff_profile
label_desc: Use image node_id 15 for calling a global function with example usage: test_dataset_profile_property_untiled(data, path_rgb_byte_tif) without return types