Added csv export to registrar api_users and white_ips

test/system/admin_area/registrars/white_ips_test.rb

@@ -0,0 +1,27 @@
+require 'application_system_test_case'
+
+class AdminRegistrarsWhiteIpsSystemTest < ApplicationSystemTestCase
+  setup do
+    sign_in users(:admin)
+  end
+
+  def test_downloads_whitelisted_ips_list_as_csv
+    travel_to Time.zone.parse('2010-07-05 10:30')
+    registrar = registrars(:bestnames)
+    white_ips = registrar.white_ips
+    white_ips.each do |ip|
+      ip.created_at = Time.zone.now
+      ip.updated_at = Time.zone.now
+      ip.save(validate: false)
+    end
+
+    visit admin_registrar_path(registrar)
+    within('.white_ips') do
+      click_on 'Export to CSV'
+    end
+
+    assert_equal "attachment; filename=\"#{registrar.name.parameterize}_white_ips_#{Time.zone.now.to_formatted_s(:number)}.csv\"; " \
+      "filename*=UTF-8''#{registrar.name.parameterize}_white_ips_#{Time.zone.now.to_formatted_s(:number)}.csv", response_headers['Content-Disposition']
+    assert_equal file_fixture('white_ips.csv').read, page.body
+  end
+end