code: def test_car(self):
      labels = show_labels(infer(self.model, car_img))
      self.assertEqual(labels, ["car"])
  
file_path: tinygrad/test/external/external_test_yolo.py
imports: import unittest
  from pathlib import Path
  import cv2
  from examples.yolov3 import Darknet, infer, show_labels
  from tinygrad.helpers import fetch
label_desc: Use image node_id 4 for calling the TestYOLO obj's underlying member method code with example usage: obj.test_car() without return types