Replace unittest with pytest

[danyeaw]

It would be very nice to convert our test suite to use pytest. It has really nice fixtures using decorators, simple assert statements, and many other very nice features. There is a python tool called unittest2pytest that can help automate parts of this conversion.

I'm submitting a...

• Bug report
• Feature request
• Documentation issue or request

[amolenaar]

Let's just pick this up as we go. I created Pytest tests for the Namespace component. It works really nice. Let's just update the tests when we have to edit them.

We can keep this issue open as a reminder.

[danyeaw]

With #262 converting a few more tests, we should only have a couple of tests left to convert.

[Shubhangi2901]

Started working on this

[pratheekcr]

Hi, I am new to open source and this issue would be a great way to start. Is this still open? Let me know, please.

[danyeaw]

@pratheekcr Yes, it is still open. We have converted a lot of our tests to pytest, but there are still some unitest ones that remain. We would love to get your help with it!

[TiemenSch]

As a first-timer on this repo, I'm trying to find my way through this one. I think the other attempt(s) for this issue have sort of come to a halt? In any case, I only have the UML directory left to do.

[danyeaw]

Closed by #658