Use testgroup for our tests and add an example

[mikesep]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 411025181

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 84.568%

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Totals
Change from base Build 410977533:	0.0%
Covered Lines:	685
Relevant Lines:	810

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💛 - Coveralls

[PatCulhane]

I think at some point i need to do a review of all this outside of the context of a PR so i can have more of the mindset of someone reading the repo to figure out how to use it rather than the mindset of a maintainer who, at least in theory, already knows.