Peer to peer code review

[Behnam1369]

Good job @Saadat123456

Your project looks amazing. to highlight:

• You created a good testing environment.
• Your code is free of linter errors.
• You have grouped your test which increases the readability and understandability.

There are just two minor things that you can improve:
1- instead of using querySelector('#list').querySelectorAll('#li') you can use querySelectorAll('#list li') which is shorter.
2- for testing clear all completed tasks functionality, instead of checking whether your list is empty or not, you can test if there is any completed task in your list or not.

[Saadat123456]

Thanks, @Behnam1369 for spending time on my code. I would surely take these suggestions into consideration.