如何防止 window.open(url, '_blank') 在茉莉花单元测试期间实际打开

Question

当我尝试测试 window.open(url, '_blank') 时，它会在测试期间自动在我的浏览器中打开一个新选项卡。有什么办法可以防止这种情况发生吗？

喜欢，尝试打开一个新标签，但不要这样做。我知道你可以做到 jasmine.createSpyObj('obj', ['methods']).and.returnValue({...})，但我不确定如何做到 window.open。

导航服务

export class NavigationService {
    navigate(url: string, openInNewTab: boolean = false): boolean {
        if (url.startsWith('http')) {
          openInNewTab ? window.open(url, '_blank') : ((window as any).location.href = url);
          return false;
        }
        ...
    }
}

NavigationService 规范

describe('NavigationService', () => {
    let navigationService: NavigationService;
    let routerSpy, configServiceSpy, windowSpy;

    let httpUrlMock = 'http://mock.com';

    beforeEach(() => {
        routerSpy = jasmine.createSpyObj('Router', ['createUrlTree', 'navigateByUrl']);
        configServiceSpy = jasmine.createSpyObj('ConfigService', ['current']);
        windowSpy = spyOn(window, 'open').and.callThrough();

        navigationService = new NavigationService(routerSpy, configServiceSpy);
    });

    it('should open the url in a new tab when the url starts with http ', () => {
        let _result = navigationService.navigate(httpUrlMock, true);

        expect(windowSpy).toHaveBeenCalledWith(httpUrlMock, '_blank');
    });
}

Answer 1

您的代码的问题在于使用了负责打开 URL 的 callThrough 方法。只需将其删除即可解决您的问题。

只需使用下面一行：

 windowSpy = spyOn(window, 'open');

使用callthrough

如何防止 window.open(url, '_blank') 在茉莉花单元测试期间实际打开

How to prevent window.open(url, '_blank') to actually open during jasmine unit test

unit-testing

jasmine