toHaveBeenCalled角茉莉花试验

我正在尝试为以下函数编写单元测试:

onNextClick() {
    this.toast.clear();

    let checkedSubservices = new Array<number>();
    for (let i = 0; i < this.subSevices.length; i++) {
        if (this.subSevices[i].checked) {
            checkedSubservices.push(this.subSevices[i].id);
        }
    }

    if (checkedSubservices.length > 0)
    {
        this.bookService.setSubserviceIds(checkedSubservices);
        this.stepService.getNextStepByController(StepControllerNames.AllocationStepController)
            .then((ret: StepControllerReturnInfo) => {
                this.goToControllerTarget(ret);
            }).catch((error) => {
                // Error
            });
    }
    else
    {
        let options = { positionClass: 'toast-top-center', preventDuplicates: true };
        this.toast.error("Error.", "", options);
    }
}

我想测试一下 goToControllerTarget 已调用。因此,我创建了以下测试:

it('onNextClick a service is checked', fakeAsync(() => {
    let ret = new ReturnInfo();

    let services = new Array<any>();
    services.push({id: 1, title: "Tite 1"});
    services.push({id: 2, title: "Tite 2"});
    services.push({id: 3, title: "Tite 3"});

    component.subSevices = services;
    const spy = spyOn(stepService, "getNextStepByController").and.returnValue(Promise.resolve(ret));
    const spy2 = spyOn(component, "goToControllerTarget");

    // Test Function
    component.onNextClick();
    tick(0);

    expect(spy2).toHaveBeenCalled();
}));

测试失败,因为 goToControllerTarget 函数未被调用。我已经进行了调试,并调用了catch代码路径,而不是then。