Note that we’ve used the option --no-test-framework to suppress the generation of the default RSpec tests, which we won’t be using. Instead, we’ll create the tests by hand starting in Section 3.2. We’ve also intentionally left off the about action from the command line arguments in Listing 3.4 so that we can see how to add it using test-driven development, or TDD (Section 3.2).

By the way, if you ever make a mistake when generating code, it’s useful to know how to reverse the process. See Box 3.1 for some techniques on how to undo things in Rails.