code: def test_linestring_bounding_boxes_empty():
      result = cuspatial.linestring_bounding_boxes(
          cuspatial.GeoSeries([]),
          0,  # expansion_radius
      )
      cudf.testing.assert_frame_equal(
          result,
          cudf.DataFrame(
              {
                  "minx": cudf.Series([]),
                  "miny": cudf.Series([]),
                  "maxx": cudf.Series([]),
                  "maxy": cudf.Series([]),
              }
          ),
      )
  
file_path: cuspatial/python/cuspatial/cuspatial/tests/spatial/bounding/test_linestring_bounding_boxes.py
imports: import numpy
  import pytest
  from shapely.geometry import MultiLineString
  import cudf
  import cuspatial
label_desc: Use image node_id 1 for calling a global function with example usage: test_linestring_bounding_boxes_empty() without return types