The José Valim approved (tm) way of introducing mocks1 into Elixir is through injecting implementations of explicit contracts defined by behaviours. José and pals crystallised this approach with the popular Mox hexicle. There’s some awkward terminology around all this which is probably not important. I should really say test double but I’ve always found that an awkward phrase. See XUnit patters for definitions. It is common in Elixir Land (as other places) to use Mock for Test Doubles s...
