ima-ui-atoms/dist/__tests__/VisibilitySpec.js

IMA.js UI React atoms

"use strict";

var _Visibility = _interopRequireDefault(require("../Visibility"));

var _window2 = _interopRequireDefault(require("../mocks/window"));

var _dispatcher2 = _interopRequireDefault(require("../mocks/dispatcher"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

describe('Visibility', () => {
  let reader = () => {};

  let writer = () => {};

  let options = {
    visibilityInterval: 180
  };
  let visibility = null;
  beforeEach(() => {
    visibility = new _Visibility.default(_window2.default, _dispatcher2.default);
  });
  describe('register method', () => {
    it('should return visibilityId', () => {
      expect(typeof visibility.register(reader, writer, options) === 'string').toEqual(true);
    });
    it('should start listening on scroll and resize events', () => {
      spyOn(visibility, '_listenOnEvents');
      visibility.register(reader, writer, options);
      expect(visibility._listenOnEvents).toHaveBeenCalled();
    });
  });
  describe('unregister method', () => {
    let visibilityId = null;
    beforeEach(() => {
      visibilityId = visibility.register(reader, writer, options);
    });
    it('should stop listening on scroll and resize events', () => {
      spyOn(visibility, '_unlistenOnEvents');
      visibility.unregister(visibilityId);
      expect(visibility._unlistenOnEvents).toHaveBeenCalled();
    });
  });
});