Implement Class Cleanup Lifecycle selection

[Haplois]

Originally posted by jhenkens on #724. Creating a new branch to be able to update it and merge.

I'm soliciting early feedback on a branch to introduce a lifecycle policy for the ClassCleanup attribute. This allows a test author to set at the command line, assembly, or class level, whether a the ClassCleanup should happen at the end of a class, or at the end of the assembly.

I've lightly tested this, and it seems to work as expected in my tests, though I am not confident in its robustness in its current form. Specifically, my current implementation relying on a dictionary of the strings of the full test names seems fragile to me, though I was unable to determine how to instead track via the guids on the completion side of the dictionary.

If this feature seems generally appeciated, I'd love guidance from those more familar with the MSTest codebase in how I might improve my implementation.

A part of any final submission I will surely include reverting the many changed build files - those were needed to build in my environment, and are not to be present in any final reviews.

Thank you.

[nohwnd]

I am missing some tests for the new behavior. There seem to be a lot of tests moved from one place to another. But are there any new tests to help us keep this in check?

[nohwnd]

Imho we should also take into account the Standard output here, which we would normally not send because we don't have the test object anymore, and send it because we do have the test object.

[Haplois]

I am missing some tests for the new behavior. There seem to be a lot of tests moved from one place to another. But are there any new tests to help us keep this in check?

There isn't a way to test this behavior currently - I'll add some tests once we update our E2E test arch.

Imho we should also take into account the Standard output here, which we would normally not send because we don't have the test object anymore, and send it because we do have the test object.

We capture outputs if EndOfClass is selected, this is remarked in doc.