This has been a long time coming, but just as unit tests sometimes need
to insert values into the database before running tests, integration
tests should do the same.  In order to allow this, we added a `setup`
function that will run once before any test and a teardown function that
runs after all tests have finished.  This is, by design, a different
choice than python `unittest` makes, where `setUp` and `tearDown` are
run before and after each test.