code: def test_checksum_band_window_min():
      with rasterio.open("tests/data/RGB.byte.tif") as src:
          window = ((0, 1), (0, 1))
          checksums = [
              src.checksum(i, window=window) for i in src.indexes
          ]
          assert checksums == [0, 0, 0]
  
file_path: rasterio/tests/test_checksum.py
imports: import rasterio
  from rasterio.windows import Window
label_desc: Use image node_id 3 for calling a global function with example usage: test_checksum_band_window_min() without return types