code: def test_hex_parsing():
      assert hex_to_bgr("#010203") == (3, 2, 1)
      assert hex_to_bgr("#123") == (
          51,
          34,
          17,
      )  # (16*3+3, 16*2+2, 16*1+1)
      assert hex_to_bgr("#ffffff") == (255, 255, 255)
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_hex_parsing() without return types