```ruby
require 'spec_helper'
require 'rails_event_store/middleware'
require 'rack/test'
require 'rack/lint'
require 'support/test_application'

module RailsEventStore
  RSpec.describe Browser do
    specify 'root' do
      request  = ::Rack::MockRequest.new(app)
      response = request.get('/res')

      expect(response.body).to match %r{<script type="text/javascript" src="/res/ruby_event_store_browser.js"></script>}
    end

    specify 'api' do
      event_store.publish(events = 21.times.map { DummyEvent.new })
      request  = ::Rack::MockRequest.new(app)
      response = request.get('/res/api/streams/all/relationships/events')

      expect(JSON.parse(response.body)["links"]).to eq({
        "last" => "http://example.org/res/api/streams/all/relationships/events/head/forward/20",
        "next" => "http://example.org/res/api/streams/all/relationships/events/#{events[1].event_id}/backward/20"
      })
    end

    def event_store
      Client.new
    end

    def app
      TestApplication.tap do |app|
        app.routes.draw { mount Browser => '/res' }
      end
    end
  end
end


```

Adjust to new paging params
user
```ruby
require 'spec_helper'
require 'rails_event_store/middleware'
require 'rack/test'
require 'rack/lint'
require 'support/test_application'

module RailsEventStore
  RSpec.describe Browser do
    specify 'root' do
      request  = ::Rack::MockRequest.new(app)
      response = request.get('/res')

      expect(response.body).to match %r{<script type="text/javascript" src="/res/ruby_event_store_browser.js"></script>}
    end

    specify 'api' do
      event_store.publish(events = 21.times.map { DummyEvent.new })
      request  = ::Rack::MockRequest.new(app)
      response = request.get('/res/api/streams/all/relationships/events')

      expect(JSON.parse(response.body)["links"]).to eq({
        "last" => "http://example.org/res/api/streams/all/relationships/events?page%5Bposition%5D=head&page%5Bdirection%5D=forward&page%5Bcount%5D=20",
        "next" => "http://example.org/res/api/streams/all/relationships/events?page%5Bposition%5D=#{events[1].event_id}&page%5Bdirection%5D=backward&page%5Bcount%5D=20"
      })
    end

    def event_store
      Client.new
    end

    def app
      TestApplication.tap do |app|
        app.routes.draw { mount Browser => '/res' }
      end
    end
  end
end


```
assistant