Feature request: testing helpers about rack-attack

[RobsonKing]

This request help me work around a related problem... We found that some of our tests can fail if they happen to run during the time rack attack has chosen as the expiry.... Since it seems like the expiry is chosen based on a modulus of time...

def sleep_if_required(interval)
  # rack attack uses a modulus of time to choose when to rest things...
  # https://github.com/rack/rack-attack/blob/d7a7a8bda5cba232d8d5d300b95cef79d40cc528/lib/rack/attack/cache.rb#L69

  # so if we are running when the reset is going to happen... our test can fail :(
  # so if it looks like we are going to be close... sleep until the start of the new period

  mod = Time.now.to_i % interval
  dif = interval - mod
  if dif < 2
    puts "sleeping till new rack attack period #{(dif + 1)}"
    sleep((dif + 1).seconds)
  end
end

Its not a great solution, and i would love some other test helper that could help work around this...