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