Acceptance testing of sinatra app using webrat fails - ruby

Question

I am trying to test a ruby authentication app using minitest and webrat but get errors.
Tests like visit '/' fail with an error Status 200 expected but was 404.
Tests containing code like fill_in :email, :with => "first#company.com" fail with error Could not find field: :email.
I read several sinatra, testing and webrat documents and forums. Some of them were old and suggested stuff like Sinatra::Default, but github.com/brynary/webrat/wiki/sinatra, Building a Sinatra App Driven By Webrat Tests and Learning From the Masters: Sinatra Internals are new, yet they still fail.
Basically, I didn't like sentence-like syntax of rspec, cucumber etc but do want to do behaviour driven development. I really like the minitest syntax, both tests and output and that is why I choose webrat for BDD. If I'm wrong about expecting webrat to fulfill acceptance testing requirements, please simply tell me that I should use this framework or that one.
Apart from that, the first parts of the main file and test file are below. I hope someone can explain me, what I am missing?
test_file
require "test/unit"
require "minitest/autorun"
require "rack/test"
require 'webrat'
require_relative "../lib/kimsin.rb"
Webrat.configure do |config|
config.mode = :rack
end
ENV["RACK_ENV"] = "test"
class KimsinTests < Test::Unit::TestCase
include Rack::Test::Methods
include Webrat::Methods
include Webrat::Matchers
def app
Sinatra::Application.new
end
def test_create_user
visit "/user/new"
fill_in :username, :with => "first#company.com"
fill_in :password, :with => "abC123?*"
fill_in :confirm_password, :with => "abC123?*"
click_link "Register"
assert 201, last_response.status, "Status 201 expected but was #{last_response.status}.\n#{error}"
assert_contain /Logged in as first#company.com./, "No user created"
assert_contain /Logout/, "Logout link not present"
end
main_file
require "sinatra"
require "erb"
require_relative "../lib/kimsin/version"
require_relative "../lib/kimsin/user"
class Kimsin < Sinatra::Application
use Rack::Session::Pool, :expire_after => 2592000
set :session_secret, BCrypt::Engine.generate_salt
configure :development do
DataMapper.auto_migrate!
end
get "/" do
if session[:user_id]
user = User.get session[:user_id]
email = user.email
erb :index, :locals => { :email => email }
else
email = nil
erb :index, :locals => { :email => email }
end
end

Answer 1

Using Sinatra with Webrat should work fine. I think that the errors that you are seeing are caused by the following method (around line 18 in your test file):
def app
Sinatra::Application.new
end
This is setting up the Sinatra::Application base class to run your tests against when you really need to set up your own subclass Kimsin (because you are creating a modular style Sinatra app), i.e.
def app
Kimsin.new
end
The 404 errors and missing fields are happening because Sinatra::Application doesn't define any of the routes you are testing.
You might also like to take a look at Capybara if you are looking for similar alternatives to Webrat.