code: def test_bbox_autofix():
      bbox = BBox.from_xyxy(-1, 1, 4, 4)
      bbox.autofix(img_w=3, img_h=2)
      assert bbox.xyxy == (0, 1, 3, 2)
  
imports: import pytest
  from icevision.all import *
label_desc: Use image node_id 4 for calling a global function with example usage: test_bbox_autofix() without return types