import { Mock } from "https://deno.land/x/rhum@v2.1.0-rc.1/mod.ts";
Get the builder to create mocked objects.
Per Martin Fowler (based on Gerard Meszaros), "Mocks are pre-programmed with expectations which form a specification of the calls they are expected to receive. They can throw an exception if they receive a call they don't expect and are checked during verification to ensure they got all the calls they were expecting."