code: def test_datasetreader_ctor_filename(path_rgb_byte_tif):
      """DatasetReader constructor accepts string filenames."""
      assert DatasetReader(path_rgb_byte_tif).name.endswith(
          "RGB.byte.tif"
      )
  
imports: import pytest
  from rasterio.io import DatasetReader, DatasetWriter
label_desc: Use image node_id 1 for calling a global function with example usage: test_datasetreader_ctor_filename(path_rgb_byte_tif) without return types