茉莉花+业力测试跑者:如何测试window.location.href

window 对象:

@Injectable()
export class WindowService {
    constructor(){};
    get window() : Window {
        return window;
    }
    get href(): string {
        return window.location.href;
    }
    set href(url: string) {
        window.location.href = url;
    }
}

然后我做了以下茉莉花测试:

describe('WindowService Test Suite', () => {
    let windowService: WindowService;

    beforeEach(() => { 
        windowService = new WindowService();
    });

    it('should set the href', () => {
        windowService.href = "/test";
        expect(windowService.href).toBe("/test");
    });
});

任何人都可以给一些提示我可以测试这个功能而不被重定向?