title: Generated tests when scaffolding
body: <p>After making a new rails 3.2.3 application, I generated a new scaffold to play around with some code.  I was running some rake tasks later on and accidentally entered 'rake' without any arguments.  To my surprise, it ran 7 tests and 10 assertions with 0 failures...  Why?  I didn't add any tests to the application.</p>
  
  <p>Were these tests generated with the scaffold?  It appears that the tests are located in the /test directory.  I want to use rspec, not test::unit or anything like that.  If this is something other than rspec, is it safe to just deleted the /test directory or is there more underlying work to remove this?</p>