Links to Lines with Unittesting

[s4m-mo]

With unittests, I think that it would be a nice idea to include links to line numbers to improve productivity. By this I mean that when an error comes up, with an error message, it should link to the line number where it says "line ...". If this is not clear, see below:

Traceback (most recent call last):
    <filename here> line 123 in function:
          raise Exception('This is where the error would occur')
    Exception: This is where the error would occur

Where it says "line 123", there could be a link to the line in the file, so that it opens the file at that line in the editor. I thought of this because there is a link to the file (which opens in the editor), but there is not a link to that line in the file.

Thank you for your time.

[brettcannon]

Are you looking at tracebacks in the terminal or in test output? If it's the former then that's being tracked in #13938. If it's the latter, we are about to push to insiders a new test UI with a lot of updates which should hopefully make looking at the raw test output panel less of a necessity.

[brettcannon]

Moved to #17001