Convert auth/setup spec controller->system/request (#33604)

spec/system/auth/setup_spec.rb

@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe 'Auth Setup' do
+  context 'with an unconfirmed signed in user' do
+    let(:user) { Fabricate(:user, confirmed_at: nil) }
+
+    before { sign_in(user) }
+
+    it 'can update email address' do
+      visit auth_setup_path
+
+      expect(page)
+        .to have_content(I18n.t('auth.setup.title'))
+
+      find('summary.lead').click
+      fill_in 'user_email', with: 'new-email@example.host'
+
+      expect { submit_form }
+        .to(change { user.reload.unconfirmed_email })
+      expect(page)
+        .to have_content(I18n.t('auth.setup.new_confirmation_instructions_sent'))
+    end
+
+    def submit_form
+      find('[name=button]').click
+    end
+  end
+end