clr-angular-static-fix/utils/scrolling/scrolling-service.spec.ts

1. Install Clarity Icons package through npm:

/*
 * Copyright (c) 2016-2018 VMware, Inc. All Rights Reserved.
 * This software is released under MIT license.
 * The full license information can be found in LICENSE in the root directory of this project.
 */
import { DOCUMENT } from '@angular/common';
import { inject } from '@angular/core/testing';

import { ScrollingService } from './scrolling-service';

describe('ScrollingService', () => {
  let scrollingService: ScrollingService;
  let document: any;

  beforeEach(
    inject([DOCUMENT], (doc: any) => {
      document = doc;
      scrollingService = new ScrollingService(document);
    })
  );

  it('Toggles no-scrolling class on body', () => {
    expect(document.body.classList.contains('no-scrolling')).toBe(false);
    scrollingService.stopScrolling();
    expect(document.body.classList.contains('no-scrolling')).toBe(true);
    scrollingService.resumeScrolling();
    expect(document.body.classList.contains('no-scrolling')).toBe(false);
  });
});