code: def test_yuv2hls():
      cv_yuv = cv.cvtColor(cv_bgr, cv.COLOR_BGR2YUV)
      cv_yuv = caer.to_tensor(cv_yuv, cspace="yuv")
  
      hls = caer.yuv2hls(cv_yuv)
  
      assert len(hls.shape) == 3
      assert isinstance(hls, caer.Tensor)
      assert hls.is_hls()
  
file_path: caer/tests/color/test_yuv.py
imports: import caer
  import cv2
  import os
label_desc: Use image node_id 5 for calling a global function with example usage: test_yuv2hls() without return types