I'm building out a medium-sized application using Sinatra and all was well when I had a single app.rb file and I followed Aslak's guidance up on Github:
https://github.com/cucumber/cucumber/wiki/Sinatra
As the app grew a bit larger and the app.rb file started to bulge, I refactored out a lot of of the bits into "middleware" style modules using Sinatra::Base, mapping things using a rack-up file (config.ru) etc.
The app works nicely - but my specs blew up as there was no more app.rb file for webrat to run against (as defined in the link above).
I've tried to find examples on how to work this - and I think I'm just not used to the internal guts of Cuke just yet as I can't find a single way to have it cover all the apps. I tried just pointing to "config.ru" instead of app.rb - but that doesn't work.
What I ended up doing - which is completely hackish - is to have a separate app.rb file in my support directory, which has all the requires stuff so I can at least test the model stuff. I can also specify routes in there - but that's not at all what I want to do.
So - the question is: how can I get Cucumber to properly work with the modular app approach?
Update to include dealing with multiple Sinatra apps
Require the file where your app comes together and change
def app
Sinatra::Application
end
to
def app
Rack::Builder.new do
map '/a' { run MyAppA }
map '/b' { run MyAppB }
end
end
and just test the app proper.
eg, if you define middleware in your config.ru that you want to test, maybe move loading those into your app's definition.
Thanks to Mr. BaroqueBobcat - the answer now, of course, seems so damn obvious :). Here's the env.rb (/features/support/env.rb):
require 'sinatra'
require 'test/unit'
require 'spec/expectations'
require 'rack/test'
require 'webrat'
require 'app1'
require 'app2'
require 'app3'
Webrat.configure do |config|
config.mode = :rack
end
class MyWorld
require 'test/unit'
set :environment, :test
include Rack::Test::Methods
include Webrat::Methods
include Webrat::Matchers
Webrat::Methods.delegate_to_session :response_code, :response_body, :response
def app
Rack::Builder.new do
map '/' do
run App1 #important - this is the class name
end
map '/app1' do
run App2
end
map '/app2' do
run App3
end
end
end
end
World do
MyWorld.new
end
https://gist.github.com/28d510d9fc25710192bc
def app
eval "Rack::Builder.new {( " + File.read(File.dirname(__FILE__) + '/../config.ru') + "\n )}"
end
Related
I'm very new to Sinatra, and I'm trying to get asset management & compiling working according to this article. Here is my main file so far:
require 'sinatra/base'
require 'sinatra/assetpack'
require 'sass'
class App < Sinatra::Base
register Sinatra::AssetPack
assets do
css :application, [
'/css/main.scss'
]
css_compression :sass
end
get '/hi' do
erb "Hello World!"
end
end
but, for some reason, when I run ruby main.rb, it just exits without failure or anything. Is there a special keyword to get the application to serve files?
Using the modular style of Sinatra application, as you are doing, running ruby main.rb is going to exit without error because it is being treated as a standard ruby application and no webserver is ever created.
You have two options.
1 Add run! if app_file == $0 just before the final end statement in your example.
This will allow you to run the app with ruby main.rb
2 (This is the preferred method) Create a rackup file config.ru with the following contents.
require './main.rb'
run App
Now you can serve the application with the command rackup -p 4567 where 4567 is whatever port number you want to use.
You need to start the application
require 'sinatra/base'
require 'sinatra/assetpack'
require 'sass'
class App < Sinatra::Base
register Sinatra::AssetPack
assets do
css :application, [
'/css/main.scss'
]
css_compression :sass
end
get '/hi' do
erb "Hello World!"
end
run! if app_file == $0
end
one observation, erb should point to a template, example:
get '/hi' do
erb :home
end
should look for a file in ../views/home.erb
Also Assuming you already did gem install sinatra. I would also use the rerun gem while developing in sinatra, gem install rerun then rerun ruby app.rb. Rerun will reload your project when you make changes to your code so you won't have to restart the app when ever you make a change.
I have a Sinatra app which requires a module in a different file. When I use Sinatra commands in that module (e.g. redirect "http://facebook.com"), I get a NoMethodError. To illustrate the problem, I have made a simplified version:
--- mainapp.rb ---
#config
require './redirector.rb'
get '/' do
Redirector::redirect_to_stackoverflow
end
--- redirector.rb ---
module Redirector
require 'sinatra'
def self.redirect_to_stackoverflow
redirect "http://stackoverflow.com"
end
end
--- config.ru ---
require 'rubygems'
require 'sinatra'
require File.dirname(__FILE__) + "/ptt.rb"
run Sinatra::Application
What is wrong? Is there a place where I haven't required something properly?
The call to redirect inside the Redirector module is sent to the Redirector Module object, where the method does not exist. require 'sinatra' inside module Redirector is not necessary, and does not do any kind of method composition.
You probably could compose Sinatra methods into your Redirector module, but that is not normal practice. Usually it's the other way around - you write "helper" modules that are composed in to your Sinatra application in various ways.
This is a similar example application, with a more usual approach to composition:
app.rb
require 'sinatra'
require_relative 'redirect.rb'
class MyApp < Sinatra::Application
include Redirector
get '/' do
redirect_to_stackoverflow
end
end
redirect.rb
module Redirector
def redirect_to_stackoverflow
redirect "http://stackoverflow.com"
end
end
config.ru
require File.dirname(__FILE__) + "/app.rb"
run MyApp
#Neil Slater's explanation is correct, but I'd suggest you also make it an Sinatra extension, e.g.
require 'sinatra/base'
module Sinatra
module Redirector
def redirect_to_stackoverflow
redirect "http://stackoverflow.com"
end
end
helpers Redirector
end
Then (for a classic app) all you need to do is require it.
require 'sinatra/redirector'
get "/" do
redirect_to_stackoverflow
end
I am writing a gem which includes a Sinatra application that a developer can extend. For example:
# gem code:
require 'sinatra'
module Mygem
class Application < Sinatra::Base
get 'auth/login' {}
get 'auth/logout {}
end
end
# developer code:
require 'mygem'
class DeveloperApp < Mygem::Application
# ..
end
I am also getting started using RSpec. How should I configure RSpec for testing this functionality?
The references above are all informative and useful but mostly rails specific. I found it quite hard to find a simple recipe for a basic test of a modular Sinatra app, so I am hoping this will answer the question for others. Here is a completely bare-bones, small as possible test. This is probably not the only way to do it, but it works well for a modular app:
require 'sinatra'
class Foo < Sinatra::Base
get '/' do
"Hello"
end
end
require 'rack/test'
describe Foo do
include Rack::Test::Methods
def app
Foo.new
end
it "should be testable" do
get '/'
last_response.should be_ok
end
end
Note that there is no need to have the server running when you launch the test (some tutorials I saw implied that you do) - it's not an integration test.
It's actually pretty simple -- just add rspec to your gemfile (then bundle install), and make a directory in your gem called spec/. Once you've done that, add a file spec/spec_helper.rb that contains some configuration for rspec (mostly requiring various files from your library) as well as defining some helper methods for your specs. Then, for each model and controller, make a file called my_model_name_spec.rb or my_controller_name_spec.rb, and do the test there.
Here are some useful resources for getting started with rspec:
Railscasts:
http://railscasts.com/episodes/275-how-i-test
http://railscasts.com/episodes/71-testing-controllers-with-rspec
http://railscasts.com/episodes/157-rspec-matchers-macros/
And for some more advanced (but well-explained) stuff:
http://benscheirman.com/2011/05/dry-up-your-rspec-files-with-subject-let-blocks
Be sure to include the rack-test gem.
You spec helper should have:
require 'rack/test'
require 'foo' # or where ever your app is
# This can go in a helper somewhere
module AppHelper
def app
Foo.new
end
end
RSpec.configure do |config|
config.include Rack::Test::Methods
config.include AppHelper
end
Then, your spec can be as follows:
require 'spec_helper'
# Example app. Delete this example.
class Foo < Sinatra::Base
get '/' do
'Jesse Pinkman'
end
end
describe Foo do
it 'is testable' do
get '/' do
expect(last_response).to be_ok
end
end
end
Ok so. I'm wanting to do request specs with RSpec for my Sinatra app.
I have a config.ru
# config.ru
require File.dirname(__FILE__) + '/config/boot.rb'
map 'this_route' do
run ThisApp
end
map 'that_route' do
run ThatApp
end
The boot.rb just uses Bundler and does additional requires for the rest of the app:
ThisApp looks like:
# lib/this_app.rb
class ThisApp < Sinatra::Base
get '/hello' do
'hello'
end
end
So I'm using RSpec and I want to write request specs like:
# spec/requests/this_spec.rb
require_relative '../spec_helper'
describe "This" do
describe "GET /this_route/hello" do
it "should reach a page" do
get "/hello"
last_response.status.should be(200)
end
end
it "should reach a page that says hello" do
get "/hello"
last_response.body.should have_content('hello')
end
end
end
end
This works fine because my spec_helper.rb is setup as follows:
# spec/spec_helper.rb
ENV['RACK_ENV'] = "test"
require File.expand_path(File.dirname(__FILE__) + "/../config/boot")
require 'capybara/rspec'
RSpec.configure do |config|
config.include Rack::Test::Methods
end
def app
ThisApp
end
But my problem is that I want to test "ThatApp" from my rackup file along with any amount more apps I might add later along with "ThisApp". For example if I had a second request spec file:
# spec/requests/that_spec.rb
require_relative '../spec_helper'
describe "That" do
describe "GET /that_route/hello" do
it "should reach a page" do
get "/hello"
last_response.status.should be(200)
end
end
it "should reach a page that says hello" do
get "/hello"
last_response.body.should have_content('hello')
end
end
end
end
RackTest requires the rack app I'm testing be defined in the spec_helper file with that 'app' method, and I think eventually I'm going to have to feed Capybara.app the same thing as well when doing further request specs with it.
I feel like I'm missing something and maybe there's an easy way to setup 'app' for RackTest and Capybara at runtime depending on what route and consequent rack app I'm testing in my request specs. Like a before filter in RSpec.configure maybe, but I can't think of or find how I'd access what rack app is currently loaded and try and set it there before the test suite runs.
Anyone get what I'm trying to do and can think of something? Thanks for any help.
Define a different helper module for each sinatra app you want to test, each of which should define its own app method that returns the corresponding app. Then you can simply include MySinatraAppHelper in the appropriate example groups where you want to test the the given app.
You can also use rspec metadata to have the module included in example groups automatically.
Have a look at my sinatra-rspec-bundler-template. Especially at the spec files. I think that's what you are trying to achieve.
It combines two separate Sinatra apps each with it's own specs.
I've set up Rack::Reload according to this thread
# config.ru
require 'rubygems'
require 'sinatra'
set :environment, :development
require 'app'
run Sinatra::Application
# app.rb
class Sinatra::Reloader < Rack::Reloader
def safe_load(file, mtime, stderr = $stderr)
if file == Sinatra::Application.app_file
::Sinatra::Application.reset!
stderr.puts "#{self.class}: reseting routes"
end
super
end
end
configure(:development) { use Sinatra::Reloader }
get '/' do
'foo'
end
Running with thin via thin start -R config.ru, but it only reloads newly added routes. When I change already existing route, it still runs the old code.
When I add new route, it correctly reloads it, so it is accessible, but it doesn't reload anything else.
For example, if I changed routes to
get '/' do
'bar'
end
get '/foo' do
'baz'
end
Than / would still serve foo, even though it has changed, but /foo would correctly reload and serve baz.
Is this normal behavior, or am I missing something? I'd expect whole source file to be reloaded. The only way around I can think of right now is restarting whole webserver when filesystem changes.
I'm running on Windows Vista x64, so I can't use shotgun because of fork().
You could try sinatra-reloader, which is known to work well on Windows (also, it's faster than shotgun).
This works:
# config.ru
require 'rubygems'
require 'app'
set :environment, :development
run Sinatra::Application
# app.rb
require 'sinatra'
class Sinatra::Reloader < Rack::Reloader
def safe_load(file, mtime, stderr = $stderr)
if file == File.expand_path(Sinatra::Application.app_file)
::Sinatra::Application.reset!
stderr.puts "#{self.class}: reseting routes"
end
super
end
end
configure(:development) { use Sinatra::Reloader }
get '/' do
'foo'
end
It matters from where you have the require statement. But I find the following solution more elegant and robust:
# config.ru
require 'rubygems'
require 'sinatra'
require 'rack/reloader'
require 'app'
set :environment, :development
use Rack::Reloader, 0 if development?
run Sinatra::Application
# app.rb
Sinatra::Application.reset!
get '/' do
'foo'
end
Does Shotgun not work on Windows?
From the README:
Shotgun
This is an automatic reloading version of the rackup command that's shipped with
Rack. It can be used as an alternative to the complex reloading logic provided
by web frameworks or in environments that don't support application reloading.
The shotgun command starts one of Rack's supported servers (e.g., mongrel, thin,
webrick) and listens for requests but does not load any part of the actual
application. Each time a request is received, it forks, loads the application in
the child process, processes the request, and exits the child process. The
result is clean, application-wide reloading of all source files and templates on
each request.
You can also try using Trinidad a JRuby Rack container based on Tomcat. In my experience it does change reloading by default without having to modify your source files. Bloody fast too. Obviously no good if you are using native libraries, but if you are deploying on Windows you are probably used to adopting a pure-ruby approach.
Its syntax is just as simple as the thin approach:
jruby -S trinidad -r config.ru
There is no Java specific yak shaving (i.e. creating web.xml or WARing up your Ruby app) and the gem is simple to install.