Testing Subdomains in Cabybara
TL;DR: Change Capybara.app_host in a setup and teardown mechanism in your favorite testing framework.
You can also create a method that temporarily changes the host around a yield-ed block, i.e.
# test/application_system_test_case.rb
Capybara.configure do |config|
config.always_include_port = true
end
class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
def using_app_host(host)
original_host = Capybara.app_host
Capybara.app_host = host
yield
ensure
Capybara.app_host = original_host
end
end
class LoginToSubdomain < ApplicationSystemTestCase
test 'login to subdomain' do
# *.lvh.me just goes back to localhost
# `config.always_include_port = true` will ensure port is included in requests
using_app_host('http://something.lvh.me:43000') do
visit '/login' # visits to http://something.lvh.me:43000/login
end
end
end