Full Microsoft.Testing.Platform support... Eventually

[farlee2121]

Motivation

Right now YoloDev supports Microsoft.Testing.Platform (MTP) via Microsoft.Testing.Extensions.VSTestBridge. This allows a smooth transition.
However, this does not allow us to leverage new features in MTP, like better hierarchy support and more granular code locations.

Experiment

I threw together an experiment demonstrating direct MTP support for expecto: https://github.com/farlee2121/expecto-puremtp-experiment

This experiment does handle

• discovering tests
• running tests will all expected outcomes

It does not handle

• filtering
• runsettings
• command line arguments
• code locations

Conclusion

I suggest we not move forward with direct MTP support.

Unfortunately, Visual Studio doesn't actually respect the new hierarchy system in MTP. In fact, it's handling the hierarchy worse and flattening all tests to one level, including the groupings which are shown but never executed.

Rider, for unclear reasons, does not work with the experiment repo even with MTP support enabled. It does work with the current YoloDev MTP support, but only on windows.

I still wanted to post the experiment as a starting point for whenever MTP support is sufficiently mature to pick this up again

[Alxandr]

Maybe open issues on MTP repo about the issues you found? That way they can be tracked?

[farlee2121]

I know they're already trying to work with the VS test explorer team to fix the hierarchy issue.

I'll have to poke around the rider issue a bit more to characterize the issue. My guess is I'll need to open that one with Jetbrains

[farlee2121]

Ionide also doesn't support direct MTP yet. That's waiting on an official MTP client package