text: const rewiremock = require("rewiremock/node");
  
  /*
      This test suite is designed to find errors
      in our initialization sequence.  It doesn't
      really validate any behavior, other than just
      making sure things don't fail.  For more
      directed testing of individual modules, you
      should create dedicated test suites.
  
      Also, we stub a lot of initialization here that
      is tricky to test due to dependencies on things
      like jQuery.  A good project is to work through
      ignore_modules and try to make this test more
      complete.
  
      Also, it's good to be alert here for things
      that can be cleaned up in the code--for example,
      not everything needs to happen in `initialization`--
      some things can happen later in a `launch` method.
  
  */
  const util = zrequire('util');
  set_global('document', {
      location: {
          protocol: 'http',
      },
  });
  
  set_global('csrf_token', 'whatever');
  
  set_global('$', () => {});
  set_global('resize', {});
  set_global('page_params', {});
  
  const ignore_modules = [
      'activity',
      'click_handlers',
      'compose_pm_pill',
      'copy_and_paste',
      'drafts',
      'emoji',
      'emoji_picker',
      'gear_menu',
      'hashchange',
      'hotspots',
      // Accesses home_msg_list, which is a lot of complexity to setup
      'message_fetch',
      'message_scroll',
      'message_viewport',
      'panels',
      'popovers',
      'reload',
      'scroll_bar',
      'server_events',
      'settings_sections',
      'settings_panel_menu',
      'settings_toggle',
      'subs',
      'timerender',
      'ui',
      'unread_ui',
  ];
  
  for (const mod of ignore_modules) {
      set_global(mod, {
          initialize: () => {},
      });
  }
  
  emoji.emojis_by_name = new Map();
  
  util.is_mobile = () => false;
  global.stub_templates(() => 'some-html');
  ui.get_scroll_element = element => element;
  
  zrequire('alert_words');
  zrequire('hash_util');
  zrequire('echo');
  zrequire('colorspace');
  zrequire('stream_color');
  zrequire('stream_edit');
  zrequire('color_data');
  zrequire('stream_data');
  zrequire('muting');
  zrequire('condense');
  zrequire('spoilers');
  zrequire('lightbox');
  zrequire('overlays');
  zrequire('invite');
  zrequire('tab_bar');
  zrequire('narrow_state');
  zrequire('people');
  zrequire('presence');
  zrequire('search_pill_widget');
  zrequire('user_groups');
  zrequire('unread');
  zrequire('bot_data');
  set_global('marked', zrequire('marked', 'third/marked/lib/marked'));
  zrequire('fenced_code');
  zrequire('markdown');
  zrequire('upload');
  zrequire('compose');
  zrequire('composebox_typeahead');
  zrequire('narrow');
  zrequire('search_suggestion');
  zrequire('search');
  zrequire('tutorial');
  zrequire('notifications');
  zrequire('pointer');
  zrequire('pm_conversations');
  zrequire('pm_list');
  zrequire('list_cursor');
  zrequire('keydown_util');
  zrequire('stream_sort');
  zrequire('stream_list');
  zrequire('topic_list');
  zrequire('topic_zoom');
  zrequire('sent_messages');
  zrequire('typing');
  zrequire('top_left_corner');
  zrequire('starred_messages');
  zrequire('user_status');
  zrequire('user_status_ui');
  
  const ui_init = rewiremock.proxy(
      () => zrequire("ui_init"),
      {
          "../../static/js/emojisets": {
              initialize: () => {},
          },
      }
  );
  
  set_global('$', global.make_zjquery());
  
  const document_stub = $.create('document-stub');
  document.to_$ = () => document_stub;
  document_stub.on = () => {};
  document_stub.idle = () => {};
  
  const window_stub = $.create('window-stub');
  set_global('to_$', () => window_stub);
  window_stub.idle = () => {};
  
  ui_init.initialize_kitchen_sink_stuff = () => {};
  
  page_params.realm_default_streams = [];
  page_params.subscriptions = [];
  page_params.unsubscribed = [];
  page_params.never_subscribed = [];
  page_params.realm_notifications_stream_id = -1;
  page_params.unread_msgs = {
      huddles: [],
      pms: [],
      streams: [],
      mentions: [],
  };
  page_params.recent_private_conversations = [];
  page_params.user_status = {};
  page_params.realm_users = [];
  page_params.realm_non_active_users = [];
  page_params.cross_realm_bots = [];
  page_params.muted_topics = [];
  page_params.realm_user_groups = [];
  page_params.realm_bots = [];
  page_params.realm_filters = [];
  page_params.starred_messages = [];
  page_params.presences = [];
  
  const $tab_bar = $.create('#tab_bar');
  $tab_bar.append = () => {};
  upload.setup_upload = () => {};
  
  server_events.home_view_loaded = () => true;
  
  resize.watch_manual_resize = () => {};
  
  $("#stream_message_recipient_stream").typeahead = () => {};
  $("#stream_message_recipient_topic").typeahead = () => {};
  $("#private_message_recipient").typeahead = () => {};
  $("#compose-textarea").typeahead = () => {};
  $("#search_query").typeahead = () => {};
  
  const value_stub = $.create('value');
  const count_stub = $.create('count');
  count_stub.set_find_results('.value', value_stub);
  $(".top_left_starred_messages").set_find_results('.count', count_stub);
  
  $("#tab_list .stream").length = 0;
  
  // set find results doesn't work here since we call .empty() in the code.
  $tab_bar.find = () => false;
  
  compose.compute_show_video_chat_button = () => {};
  $("#below-compose-content .video_link").toggle = () => {};
  
  $(".narrow_description > a").hover = () => {};
  
  run_test('initialize_everything', () => {
      ui_init.initialize_everything();
  });
  