Angular 5：Firefox上的单元测试失败

我用Karma和Jasmine为Angular 5组件编写测试。测试正在Chrome和Firefox上运行（karma Chrome launcher v2.1.1和karma Firefox launcher v1.1.0）

在Chrome上，所有测试都成功，但对于Firefox，出现了一个奇怪的错误：

[object ErrorEvent]抛出

Firefox 58.0.0 (Mac OS X 10.12.0) Component: Login should redirect if user click Forgot password button FAILED
        [object ErrorEvent] thrown
Firefox 58.0.0 (Mac OS X 10.12.0): Executed 33 of 43 (1 FAILED) (skipped 6) (0 secs / 10.761 secs)
Chrome 64.0.3282 (Mac OS X 10.12.6): Executed 33 of 43 (skipped 6) SUCCESS (0 secs / 5.868 secs)
Firefox 58.0.0 (Mac OS X 10.12.0) Component: Login should redirect if user click Forgot password button FAILED
        [object ErrorEvent] thrown
Firefox 58.0.0 (Mac OS X 10.12.0): Executed 37 of 43 (1 FAILED) (skipped 6) (13.172 secs / 12.945 secs)
Chrome 64.0.3282 (Mac OS X 10.12.6): Executed 37 of 43 (skipped 6) SUCCESS (7.108 secs / 6.964 secs)

如果用户单击忘记密码按钮，测试应重定向：

如果我单独运行这个测试，那么一切正常

当我使用

fakeAsync

包含一个测试时，问题就开始了。如果我删除这个测试，那么一切都正常工作

有没有人遇到过类似的问题，或者我做错了什么？ 谢谢

  it('should redirect if user click Forgot password button', inject([UserService], (userService: UserService) => {
    // GIVEN
    spyOn(userService, 'goToLogin');

    // WHEN
    component.goToForgotPassword();

    // THEN
    expect(userService.goToLogin).toHaveBeenCalledWith(Constants.AUTH_PAGES.FORGOT_PASSWORD);
  }));