BitAutoDataAttribute is used to mark a Theory as autopopulating
parameters.
Extract common attribute methods to to a helper class. Cannot
inherit a common base, since both require inheriting from different
Xunit base classes to work.
https://github.com/AutoFixture/AutoFixture/pull/1164 shows that only
the first test case is pulled for this attribute.
This is a workaround that populates the provided parameters, left to
right, using AutoFixture to populate any remaining.
Controller properties have all kinds of validations in the background.
In general, we don't user properties on our Controllers, so the easiest
way to allow for Autofixture-based testing of our Controllers is to just
omit setting all properties on them.
