code: def test_initial_bytes_boundless(rgb_file_object):
      """FilePath contents can initialized from bytes and opened."""
      with FilePath(rgb_file_object) as vsifile:
          with vsifile.open() as src:
              assert src.driver == "GTiff"
              assert src.count == 3
              assert src.dtypes == ("uint8", "uint8", "uint8")
              assert src.read(
                  window=Window(0, 0, 800, 800), boundless=True
              ).shape == (
                  3,
                  800,
                  800,
              )
  
imports: from io import BytesIO
  import logging
  import os.path
  import pytest
  import rasterio
  from rasterio.enums import MaskFlags
  from rasterio.shutil import copyfiles
  from rasterio.windows import Window
  import io
label_desc: Use image node_id 7 for calling a global function with example usage: test_initial_bytes_boundless(rgb_file_object) without return types