Yep.
If you continue just a little, you will discover that it was an easy example for all the publics, but the reality is that I have found tests like:
expect(wrapper.find('.say-hello')).not.toBe(null);
Which is effectively useless, because with enzyme, wrappers always returns a value even when they do not find any element.
And that is very common. It happens because most developers write the test **after** the code is written and never check if the test worked properly or not.
But Arslan, thanks for the challenge! I hope that you can understand that the previous example is very difficult to see why it does not work, and I would have preferred something more obvious, but that is the "same test nothing". I am sorry if I disappointed you.