discourse/test/javascripts/lib/html-test.js.es6

module("Discourse.HTML");

import { getCustomHTML, setCustomHTML } from 'discourse/lib/html';

test("customHTML", function() {
  blank(getCustomHTML('evil'), "there is no custom HTML for a key by default");

  setCustomHTML('evil', 'trout');
  equal(getCustomHTML('evil'), 'trout', 'it retrieves the custom html');

  PreloadStore.store('customHTML', {cookie: 'monster'});
  equal(getCustomHTML('cookie'), 'monster', 'it returns HTML fragments from the PreloadStore');
});