code: def test_read_video_pts_unit_sec(self):
      with temp_video(10, 300, 300, 5, lossless=True) as (f_name, data):
          lv, _, info = io.read_video(f_name, pts_unit="sec")
  
          assert_equal(data, lv)
          assert info["video_fps"] == 5
          assert info == {"video_fps": 5}
  
imports: import contextlib
  import os
  import sys
  import tempfile
  import pytest
  import torch
  import torchvision.io
  from common_utils import assert_equal
  from torchvision import get_video_backend
label_desc: Use image node_id 9 for calling the TestVideo obj's underlying member method code with example usage: obj.test_read_video_pts_unit_sec() without return types