How do I test session transfer via custom domains?

[Jeffrey Guenther]

Apologies for the duplicate post. Tab and space all the sudden submit the post rather than indent the code.

Hi rspec community,

I'm developing an app that allows users to set custom domains. We've implemented a form of global id through a technique we've called session trampolines. It's similar to how to Medium has implemented global id for all domains they host. If you're logged into the Medium, you're logged into all the sites it hosts.

We're using Poltergeist as our JS driver.

I have setup testcustomdomain.smartpeoplewritingsomething.info to point to 127.0.0.1 for testing.

When I try to access  testcustomdomain.smartpeoplewritingsomething.info I get an error saying the DNS can't be resolved. I'm not sure what's going on. 

Anyone know how I might structure or configure my tests to use one browser for the entire test?

Here's the test:

require 'rails_helper'

RSpec.feature "custom domain redirects", type: :feature do

  describe "GET to sophia url" do

    it "does not redirect" do

      visit "/"

      expect(page).to have_content("Sign In")

      expect(page.status_code).to equal(200)

    end

  end

  describe "GET custom domain url when signed out" do

    it "tries to transfer session and redirects back to url" do

      page.visit "http://test.lvh.me"

      expect(page).to have_content("Sign In")

      expect(page.status_code).to equal(200)

    end

  end

  describe "GET custom domain url when signed in", js: true do

    it "transfers session and redirects to url" do

      sign_in

      expect(page).to have_content("My Content")

      page.visit "http://testcustomdomain.smartpeoplewritingsomething.info"

      # This lines gives me an error sayind the DNS can't be resolved.

      # expect(current_url).to eq("http://testcustomdomain.smartpeoplewritingsomething.info/")

      # expect(page).to have_content("Dashboard")

    end

  end

end