Format testset names

[lkdvos]

This assigns testsets to just the group + filename instead of the full path:
(example from SparseArraysBase)
Before:

Test Summary:                                                         | Pass  Total  Time
/Users/ldevos/Projects/SparseArraysBase.jl/test/basics/test_basics.jl |  240    240  2.7s
Test Summary:                                                           | Pass  Total  Time
/Users/ldevos/Projects/SparseArraysBase.jl/test/basics/test_diagonal.jl |   24     24  0.3s
Test Summary:                                                          | Pass  Total  Time
/Users/ldevos/Projects/SparseArraysBase.jl/test/basics/test_exports.jl |    1      1  0.1s

After

     Testing Running tests...
Test Summary:          | Pass  Total  Time
/basics/test_basics.jl |  240    240  2.7s
Test Summary:            | Pass  Total  Time
/basics/test_diagonal.jl |   24     24  0.3s
Test Summary:           | Pass  Total  Time
/basics/test_exports.jl |    1      1  0.1s

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 6.02%. Comparing base (88679b0) to head (8aa09b8).

Additional details and impacted files

@@          Coverage Diff          @@
##            main     #42   +/-   ##
=====================================
  Coverage   6.02%   6.02%           
=====================================
  Files          1       1           
  Lines         83      83           
=====================================
  Hits           5       5           
  Misses        78      78           

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[mtfishman]

Looks reasonable, definitely easier to read. The reason I liked having the absolute path was because I could see if tests of the dev'd package vs. the undev'd package were being run but in the end I don't think I needed that and it isn't worth the extra noise, and I think you can get that information from the output of Pkg.test anyway.

As a nitpick, I would prefer basics/test_exports.jl over /basics/test_exports.jl to make it clear it is a relative path rather than an absolute path.

[lkdvos]

I fully agree, I changed the implementation slightly such that this should now be the case

[mtfishman]

Looks good, thanks. Can you bump the version then I'll merge?