code: def test_rgb2hsv():
      cv_rgb = cv.cvtColor(cv_bgr, cv.COLOR_BGR2RGB)
      cv_rgb = caer.to_tensor(cv_rgb, cspace="rgb")
      hsv = caer.rgb2hsv(cv_rgb)
  
      assert len(hsv.shape) == 3
      assert isinstance(hsv, caer.Tensor)
      assert hsv.is_hsv()
  
file_path: caer/tests/color/test_rgb.py
imports: import caer
  import cv2
  import os
label_desc: Use image node_id 3 for calling a global function with example usage: test_rgb2hsv() without return types