[testing] Add a canary in the coal mine

[jasonLaster]

We are currently adding linting. I assume we'll soon add node unit testing.

The last piece, which would really help is a small setup that would clone the tools that use the shared modules and run the integration tests.

I suppose the one caveat is perhaps there is an intentional breaking change that would fail, but it could still be nice to see the tests fail to see if in fact they do fail for the reasons you expect. And i'm sure we would catch un-anticipated failures as well.