Add specs

spec/features/admin/admin_system_info_spec.rb

+require 'spec_helper'
+
+describe 'Admin System Info' do
+  before do
+    login_as :admin
+  end
+
+  describe 'GET /admin/system_info' do
+    it 'shows system info page' do
+      visit admin_system_info_path
+
+      expect(page).to have_content 'CPU'
+      expect(page).to have_content 'Memory'
+      expect(page).to have_content 'Disk'
+    end
+  end
+end