Listing 5.26 will make all of your specs fail.

hartl_fix.rb

SampleApp::Application.routes.draw do
  root  'static_pages#home'
  match '/help',    to: 'static_pages#help',    via: 'get'   
  match '/about',   to: 'static_pages#about',   via: 'get'
  match '/contact', to: 'static_pages#contact', via: 'get'
end

#should be 

SampleApp::Application.routes.draw do
  root  'static_pages#home'
  match 'static_pages/help',    to: 'static_pages#help',    via: 'get'   
  match 'static_pages/about',   to: 'static_pages#about',   via: 'get'
  match 'static_pages/contact', to: 'static_pages#contact', via: 'get'
end