Function testPassive

packages/zone.js/test/browser/browser.spec.ts:1716–1723

(eventName: string, expectedPassiveLog: string, options: any)

          logs.push(e.defaultPrevented ? 'defaultPrevented' : 'default will run');
        };
        const testPassive = function (eventName: string, expectedPassiveLog: string, options: any) {
          (button as any).addEventListener(eventName, listener, options);
          const evt = document.createEvent('Event');
          evt.initEvent(eventName, false, true);
          button.dispatchEvent(evt);
          expect(logs).toEqual(['default will run', expectedPassiveLog]);
          (button as any).removeAllListeners(eventName);
        };
        beforeEach(() => {
          logs = [];
          (button as any).removeAllListeners();