Rails integration tests with Faraday & Omniauth

Question

My integration test looks like this:

class OAuthTest < ActionDispatch::IntegrationTest
  ...

  @client = OAuth2::Client.new(                                                
    client_id,                                              
    client_secret,                                          
    { :site => 'https://provider', :token_url => '/oauth/access_token' }
  )                                                                            

  @client.connection.build do |b|                                              
    b.adapter :action_dispatch, self
  end                                                                          

  access_token = @client.auth_code.get_token(...)
  access_token.get("/user.json")

And with Faraday 0.7.6 it works just fine, the action_dispatch adapter will route the http request to my Rails app (calling the users_controller). But with Faraday 0.8.0 the action_dispatch adapter was replaced by the rack (see https://github.com/technoweenie/faraday/pull/134) and I cannot make it work.

I think I need to change the above code to this:

@client.connection.build do |b|      
  b.adapter :rack, self.app          
end                                  

But it fails at Rack (1.2.5) expecting a Stream, but it gets a Hash and says undefined read method for Hash at line 149 (here: https://github.com/rack/rack/blob/1.2.5/lib/rack/request.rb#L149).

How can I make this work?

Answer 1

You will need to add the middleware url_encoded to make this work;

@oauth = OAuth2::Client.new('client_id', 'client_secret') do |b|
  b.request :url_encoded
  b.adapter :rack, Rails.application
end

Answer 2

From your test suite you can access the rack app directly via the app variable. The code should be:

@client.connection.build do |b|      
  b.adapter :rack, app
end

I tried this out on a sample app and it's working for me. Good luck!