Question

我遇到以下源代码和相应的单元测试问题：

来源：

public laufeVorwaertsUndZurueck(laenge:number):ng.IPromise<any>{
 return this.ev3DifferentialPilotAdapterService.run(laenge)
    .then((response:any)=> {
        return this.ev3DifferentialPilotAdapterService.rotate(180);
    })
    .then((response:any)=> {
         return this.ev3DifferentialPilotAdapterService.run(laenge);
    })
    .then((response:any)=> {
        return this.ev3DifferentialPilotAdapterService.rotate(180);
    });
    console.log("done");
}

单元测试：

it("laufe 60cm vorwärts und laufe wieder zurück", () =>{
    var promise = qService.resolve("resolved");
    console.log(promise);
    spyOn(ev3DifferentialPilotAdapterService, "run").and.returnValue(promise);
    spyOn(ev3DifferentialPilotAdapterService, "rotate").and.returnValue(promise);

    baseBallAktionenService.laufeVorwaertsUndZurueck(60);
    expect(ev3DifferentialPilotAdapterService.run).toHaveBeenCalledWith(60);
    expect(ev3DifferentialPilotAdapterService.run).toHaveBeenCalledTimes(2);
    expect(ev3DifferentialPilotAdapterService.rotate).toHaveBeenCalledWith(180);
    expect(ev3DifferentialPilotAdapterService.rotate).toHaveBeenCalledTimes(2);
})

即使很难通过已解决的 promise对象，也永远不会调用 .then 方法中的Callback-Functions。正常运行时Source很好，但是使用jasmine的 spyOn 在Unit测试中执行时表现错误。

Answer 1

解决承诺后使用$ digest。

见下文..

it("laufe 60cm vorwärts und laufe wieder zurück", () =>{
    spyOn(ev3DifferentialPilotAdapterService, "run").and.returnValue(promise);
    spyOn(ev3DifferentialPilotAdapterService, "rotate").and.returnValue(promise);

    baseBallAktionenService.laufeVorwaertsUndZurueck(60);

    var promise = qService.resolve("resolved");
    $scope.$digest();

    expect(ev3DifferentialPilotAdapterService.run).toHaveBeenCalledWith(60);
    expect(ev3DifferentialPilotAdapterService.run).toHaveBeenCalledTimes(2);
    expect(ev3DifferentialPilotAdapterService.rotate).toHaveBeenCalledWith(180);
    expect(ev3DifferentialPilotAdapterService.rotate).toHaveBeenCalledTimes(2);
})

解决了AngularJS Unit-Test中的Promise与Jasmine spyOn不兼容的问题

1 个答案: