p.6
launchy and guard-rspec are mentioned but they're not in the Gemfile
p.15
Though it's later explained that Factory() is a shortcut for Factory.create(). The section below might read more clearly with explicit calls to create()
Can you guess the difference? Factory.create() builds the model and saves it, while Factory.build()
instantiates a new model, but doesn’t save it. If we used Factory.create() in this example it would break
before we could even run the test, due to the validation.