Access to request object in request specs

问题:

How can I set the request headers before doing the request on a request spec?

I'm moving controller specs to request specs on my API using Rails. One thing I'm stuck on is that I have no access to a request object to allow the requests.

On my controller specs, I have access to a method I created which signs a specific user:

def sign_in(user)
  token = user.api_keys.first.token
  # note the request object being used in the next line
  request.env["HTTP_AUTHORIZATION"] = ActionController::HttpAuthentication::Token.encode_credentials(token)
end

This works fine on controller specs, I can safely do:

before { sign_in(user) }
it { post :endpoint, params }

But on a request spec, the request object is not available. If I try to:

before { sign_in(user) }
it { post "/api/endpoint", params }

I get request on my helper method as nil.

I know I could do:

it { post "/api/endpoint", {"HTTP_AUTHORIZATION" => ... } }

But this seems a lot of clutter in the spec, specially compared to a controller spec.

I've tried using ActionDispatch::TestRequest::DEFAULT_ENV as suggested by this answer, but it didn't work too (I get a 401).

回答1:

If you're not already using Rack::Test for this then you should be. Rack::Test is better suited than Capybara for testing API requests. It can be configured in your rspec/spec_helper.rb

RSpec.configure do |config|
  # ...
  config.include Rack::Test::Methods
end

When you're configured to use Rack::Test, you can set headers before the request like so:

it 'POST /api/enpoint authenticates successfully' do
  header 'Authorization', '...'
  post "/api/endpoint", params
  expect(last_response).to be_ok
end

This will be accessible in your controller as request.headers['HTTP_AUTHORIZATION'].

The source code for this method can be found here - https://github.com/brynary/rack-test/blob/master/lib/rack/test.rb#L127-L141

回答2:

If you use capybara for request specs, I guess you can set headers like suggested here, however it's better to perform the real log-in through the HTML form or whatever is the way to authenticate in your app, because request specs are higher level than controller ones, and that's why they normally do not allow you to manually set headers, cookies and other low level stuff.