How to follow redirect to subdomain in capybara RSpec test?

Question

I want to test the authentication mechanism, which upon success redirects to the subdomain, by example: 1. The login form is located in http://example.com 2. Users fill in the form and if credentials are correct, is redirected to http://zone.example.com .

My controller action looks like this:

def create_session
  if User.authorize(params[:user])
     sign_in user
     redirect_to root_url(subdomain: 'zone')
  else
     redirect_to "#{root_url}#email-login-modal?wrong_password=true"
  end
end

The integration test:

context "logging in" do
    before(:all) do
      @password = 'test123456'
    end
    let(:user) {create(:user, password: @password)}
    scenario "by email", js: true do
      visit "/"
      page.find("a[href='#email-login-modal']").click
      within("#login-form") do
        fill_in 'user_email', :with => user.email
        fill_in 'user_password', :with => @password
        find("button[type='submit']").click
      end
      expect(page).to have_content user.name
    end
end

The login works in development, but the test fails because Capybara does not follow redirection to the subdomain.

Answer 1

这是通过Rails 5和Capybara Chrome驱动程序为我完成的：

Rails.application.routes.default_url_options[:host] = 'lvh.me'