main_controller_test.rb

require File.expand_path(File.dirname(__FILE__) + '/../../test_config.rb')

context "PagesController" do

  context "GET :index" do
    setup { get '/pages' }

    # These two are the same
    asserts_body.matches %r{Something}  # My custom helper
    asserts("that it shows something") { last_response.body }.matches %r{Something}

    # Negative assertions
    denies_body.matches %r{Another}
     denies("that it shows another") { last_response.body }.matches %r{another}

    asserts_status.equals 200 # also my custom helper
  end

end

pages_controller_test.rb

require File.expand_path(File.dirname(__FILE__) + '/../../test_config.rb')

context "PagesController" do

  app SubApp.tap { |app| }

  context "GET :tos" do
    setup { get '/tos' }

    # These two are the same
    asserts_body.matches %r{Something}  # My custom helper
    asserts("that it shows something") { last_response.body }.matches %r{Something}

    asserts_status.equals 200 # also my custom helper
  end

end

test_config.rb

PADRINO_ENV = 'test' unless defined?(PADRINO_ENV)
require File.expand_path(File.dirname(__FILE__) + "/../config/boot")
require 'riot/rr'

Riot.pretty_dots

# Specify your app using the #app helper inside a context.
# Takes either an app class or a block argument.
# app { Padrino.application }
#

class Riot::Situation
  include Rack::Test::Methods
  ##
  # You can handle all padrino applications using instead:
  #   Padrino.application

  def app
    @app || Padrino.application
  end
end

class Riot::Context
  # Set the Rack app which is to be tested.
  #
  #   context "MyApp" do
  #     app { [200, {}, "Hello!"] }
  #     setup { get '/' }
  #     asserts(:status).equals(200)
  #   end
  def app(app=nil, &block)
    setup { @app = (app || block.call) }
  end

  # Returns assertion for last_response body
  # asserts_body.matches %r{Hi}
  def asserts_body(description="body")
    asserts(description) { last_response.body }
  end

  # Returns negation for last_response body
  # denies_body.matches %r{Hi}
  def denies_body(description="body")
    denies(description) { last_response.body }
  end

  # Returns assertion for last_response status
  # asserts_status.matches 'ok'
  def asserts_status(description="status")
    asserts(description) { last_response.status }
  end

  # Returns negation for last_response status
  # denies_status.matches 'ok'
  def denies_status(description="status")
    denies(description) { last_response.status }
  end
end