unable to run unit test code

[hopezh]

I got the following errors running the unit test code.

May I ask if I missing something important during installation?

❯ python -m unittest discover -v -s tests -t .

Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/opt/anaconda3/envs/ai/lib/python3.11/unittest/__main__.py", line 18, in <module>
    main(module=None)
  File "/opt/anaconda3/envs/ai/lib/python3.11/unittest/main.py", line 101, in __init__
    self.parseArgs(argv)
  File "/opt/anaconda3/envs/ai/lib/python3.11/unittest/main.py", line 127, in parseArgs
    self._do_discovery(argv[2:])
  File "/opt/anaconda3/envs/ai/lib/python3.11/unittest/main.py", line 247, in _do_discovery
    self.createTests(from_discovery=True, Loader=Loader)
  File "/opt/anaconda3/envs/ai/lib/python3.11/unittest/main.py", line 157, in createTests
    self.test = loader.discover(self.start, self.pattern, self.top)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/anaconda3/envs/ai/lib/python3.11/unittest/loader.py", line 332, in discover
    raise ImportError('Start directory is not importable: %r' % start_dir)
ImportError: Start directory is not importable: 'tests'

My pytorch3d version:

❯ pip show pytorch3d

Name: pytorch3d
Version: 0.7.8
Summary: PyTorch3D is FAIR's library of reusable components for deep Learning with 3D data.
Home-page: https://github.com/facebookresearch/pytorch3d
Author: FAIR
Author-email:
License:
Location: /opt/anaconda3/envs/ai/lib/python3.11/site-packages
Requires: iopath
Required-by: