r.rb

def test_default_guest_gives_login_screen
  get '/'
  assert last_response.ok?
  assert last_response.body.include?('log in to continue')
end

---------->

context "When accessing / guest should see the login screen" do
  before :all do
    get '/'
  end

  it "should have a OK status" do
    last_response.should be_ok
  end

  it "should include 'log in to continue' in the body" do
    last_response.should match /log in to continue/
  end
end