Add render test suite

[chris-laplante]

No description provided.

[chris-laplante]

@djc Could you please take a look at this when you get a chance? The basic_progress_bar test is not working as I would expect. I call inc(1) but it is not actually updating the progress bar. I think something might still be wrong with the rate limiting logic?

[djc]

Yeah... I think we should rip out the draw limiting in the BarState and instead rely on the LeakyBucket stuff in the draw target.

[chris-laplante]

Yeah... I think we should rip out the draw limiting in the BarState and instead rely on the LeakyBucket stuff in the draw target.

Feel free to repurpose this PR if you want to add commits to do that. It might make sense given to develop those fixes in tandem with the render test suite. I can help flesh out the test suite (as originally intended) but I'm not sure I can help much with LeakyBucket though.

[djc]

Do you want to test? #380

[chris-laplante]

Do you want to test? #380

Will do!

[djc]

I added back the test case in 3930cfc after I reverted some of my draw limiting changes and merged the move into an integration test as 0c153b8. Thanks!