@financial-times/o-ads/test/cypress/examples/unit/main.test.js

This package contains the core functionality used by the FT in providing ads across all of its sites. This includes ft.com, howtospendit.com, ftadviser.com and other specialist titles.

"use strict";

/* globals describe, it, cy, expect: false: false */
const Ads = require("../../../module.js").constructor;

const utils = require("../../../dist-esm/js/utils");

describe('Main', () => {
  beforeEach(() => {
    cy.clearCookie('FTConsent');
  });
  it('oAds.slotReady event fires after o.DOMContentLoaded', () => {
    document.body.insertAdjacentHTML('beforeend', '<div data-o-ads-name="banlb2" data-o-ads-formats="MediumRectangle"></div>');
    new Ads();
    const oAdsReadySpy = cy.spy();
    utils.on('slotReady', oAdsReadySpy);
    /*
    	cy runs two iframes. One loads the test, the other loads
    	a locally running app (if set).
    		window.document (here, refers to the test container)
    	cy.document() refers to the app env
    */

    document.dispatchEvent(new Event('o.DOMContentLoaded')); // Wait for event loop to finish

    cy.wait(0).then(() => {
      const eventDetail = oAdsReadySpy.args[0][0].detail;
      expect(oAdsReadySpy.callCount).to.equal(1);
      expect(eventDetail.name).to.equal('banlb2');
      expect(eventDetail.slot.sizes).to.deep.equal([[300, 250]]);
    });
  });
  context('Initialising', () => {
    it('oAds.initialised event is triggered', () => {
      const ads = new Ads();
      const oAdsInitSpy = cy.spy();
      utils.on('initialised', oAdsInitSpy);
      ads.init();
      const eventDetail = oAdsInitSpy.args[0][0].detail;
      expect(oAdsInitSpy.callCount).to.equal(1);
      expect(eventDetail).to.equal(ads);
      expect(ads.isInitialised).to.equal(true);
    });
    it('initAll() function is only triggered once', () => {
      const ads = new Ads();
      const gptInit = cy.spy(ads.gpt, 'init');
      expect(gptInit.callCount).to.equal(0);
      document.dispatchEvent(new Event('o.DOMContentLoaded'));
      expect(gptInit.calledOnce);
      document.dispatchEvent(new Event('o.DOMContentLoaded'));
      expect(gptInit.calledOnce);
    });
    it('Manual inits always trigger but DOM inits do not override', () => {
      const ads = new Ads();
      const gptInit = cy.spy(ads.gpt, 'init');
      expect(gptInit.callCount).to.equal(0);
      ads.init();
      expect(gptInit.calledOnce);
      document.dispatchEvent(new Event('o.DOMContentLoaded'));
      expect(gptInit.calledOnce);
      ads.init();
      expect(gptInit.calledTwice);
    });
  });
});