DEV: Add system test for user security keys (#23372)

spec/system/page_objects/components/user_menu.rb

@@ -15,6 +15,25 @@ module PageObjects
         self
       end
 
+      def click_profile_tab
+        click_link("user-menu-button-profile")
+        has_css?("#quick-access-profile")
+        self
+      end
+
+      def click_logout_button
+        find("#quick-access-profile .logout .btn").click
+        has_css?(".d-header .login-button")
+        self
+      end
+
+      def sign_out
+        open
+        click_profile_tab
+        click_logout_button
+        self
+      end
+
       def has_group_mentioned_notification?(topic, user_that_mentioned_group, group_mentioned)
         expect(find("#quick-access-replies .group-mentioned").text).to eq(
           "#{user_that_mentioned_group.username} @#{group_mentioned.name} #{topic.title}",

spec/system/page_objects/pages/user_preferences_security.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module PageObjects
+  module Pages
+    class UserPreferencesSecurity < PageObjects::Pages::Base
+      def visit(user)
+        page.visit("/u/#{user.username}/preferences/security")
+        self
+      end
+
+      def visit_second_factor(password)
+        click_link(class: "btn-second-factor")
+
+        find(".second-factor input#password").fill_in(with: password)
+        find(".second-factor .btn-primary").click
+      end
+    end
+  end
+end