Simplify testing by creating a Builder for dependencies

[bsstahl]

Currently, tests are far more complex than they need to be because of the different dependency requirements for each test. Helper methods for the dependencies were created piecemeal, and without a consistent pattern. As a result, it is hard to know what each test is doing, and using with regard to dependencies.

A common set of builders that implement the Builder Pattern could go a long way to simplifying this complexity.