CODEWITHSUNDEEP
rubyrspecsinatra
equivalent8
equivalent8

Reputation: 14227

Launch sinatra from a test/spec or another ruby script

I'm experimenting, and I'm trying to launch dummy Sinatra application from RSpec and kill it when the spec is finished. Something like:

# spec/some_spec.rb

before(:all)
  # launch sinatra dummy app
end

after (:all)
  # kill sinatra dummy app
end

it 'should return list of whatever' do
  expect(JSON.parse(make_request('0.0.0.0:4567/test.json')))
   .to include('whatever')
end

I could use system("ruby test/dummy/dummy_app.rb"), but how can I kill that process only? Does anyone know how I can launch the Sinatra inside a test (or from another ruby script)? I know about WebMocks, but I want to see if I can manage to make my test work this way.

Upvotes: 0

Views: 426

Answers (2)

equivalent8
equivalent8

Reputation: 14227

As I'm writing request specs to ensure the features won't be broken I decided to rather write separate Cucumber features. The nice thing is that I can use Capybara, and thanks to Selenium Web Drive, I can launch a server before I run my tests.

So, I created a dummy Sinatra application (that will represent the external service to which the actual code I'm testing is doing requests (including a nasty system('curl whatever.com')).

All I have to do is stub out the methods passed to curl to use Capybara.current_session.server.host and Capybara.current_session.server.port.

Once I'm done with my re-factoring all I have to do is remove the Capybara server variables, and Selenium web drive from the cucumber/capybara configuration.

Tests after a brief change will be still working and will be valid.

Update

In the end I wrote it all with RSpec request tests, as doing it in Cucumber was little bit time consuming and I already spend too much time on this.

I mark these kind of request tests with RSpec tag and Before I lunch these I manually lunch simple Sinatra/Grape dummy API application to which the request are made. (Then I run RSpec tests with this tag)

So basically I end up with specs for functionality that uses net/http that uses WebMock and don't need a server, and request tests for which I need to run the server before I run the specs. So the original question remains, how to lunch a server before tests start

After I cover all the functionality I'm gonig to rewrite the curl to net/http however I'm going to keep those requests specs as I discovered they are nice idea when it comes to crazy API scenarios (like testing https + diggested authentication)

Upvotes: 0

Darshan Rai
Darshan Rai

Reputation: 130

Look under RSpec on "Testing Sinatra with Rack::Test". I'd suggest you use that code as boilerplate to get started.

Just add this to your describe block:

def app
  Sinatra::Application
end

I would suggest you read up RSpec.

Since you want to test an external system, by the looks of your comment, instead of system "curl whatewer.com", you can use Net::HTTP to make requests and then test against the response.

Have a look at "Testing an external API using RSpec's request specs".

Upvotes: 1

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