Angular-Jasmine/karma-subscribe lambda表达式未执行

我正在使用Jasmine/karma为一个角度为6的可观测组件编写一个单元测试用例。请找到我正在为其编写测试用例的组件方法

public ngOnInit(): void {
{
   this.editOrderContainer.getEditOrderState().subscribe(editOrderState => {
            this.shipAddressEditted = editOrderState.data.shipAddressEdited;
            this.shipInstructionEditted = editOrderState.data.shipInstructionEditted;
            this.hasShippingDetailsChanged = (this.shipAddressEditted || this.shipInstructionEditted) && this.existedAffectedOrderNumbers;
        });
...
}

在上面的代码中，我的测试用例应该包含/期望变量“hassippingdetailschanged”。在spec文件中，我会有如下的“it”

.spec文件中的mocking/spy代码如下所示

let editOrderContainer: any;
let getEditOrderState: any;

beforeEach(async () => {
...
     editOrderContainer = jasmine.createSpyObj('editOrderContainer', ['getEditOrderState', 'rebookOrder']);
            editOrderContainer.getEditOrderState.and.callFake(() => {
                return getEditOrderState;
            });
            getEditOrderState = {
                subscribe: function () {
                    return getOrderDetailsServiceResult();
                }
            };
            spyOn(getEditOrderState, 'subscribe').and.callThrough();
            ...
 });

 function getOrderDetailsServiceResult() {
        return {
            shipAddressEditted: true,
            shipInstructionEditted : true
        };
    }

EditOrderContainer代码如下所示：

public getEditOrderState(): Observable<EditOrderState> {
        return this.store.select(s => s.editOrderReducer);
    }   

public getEditOrderState（）：可观察{
返回this.store.select（s=>s.editOrderReducer）；
}   

我在这里面临的问题是，它在subscribe中为editOrderState返回值，而lambda表达式语句没有得到执行

i、 e.ShipAddressEdited、ShipInstructionEdited、HassippingDetailsChanged的赋值语句未执行。 我希望执行这些行，以便分配所需的变量HassippingDetails

---

知道我在这里犯了什么错吗？为什么未在spec文件中执行subscribe lambda表达式？

尝试使用

存根

，以便它也可以在其他地方重用。尝试以下更改：

将

editOrderContainer

设置为构造函数中的

public

：

将

存根创建为
EditOrderContainerStub
：

在

spec

文件的

提供程序中：

---

我找到了答案，问题在于我为editOrderContainer及其方法getEditOrderState创建间谍的方式，该方法返回一个可观察的

在我之前的代码中，

Observable.of（editOrderState）

缺失，这是必需的。另外，我不应该也不需要对

subscribe

方法进行mock/spy

我的间谍对象如下所示

editOrderContainer = jasmine.createSpyObj('editOrderContainer', ['getEditOrderState', 'rebookOrder']);
editOrderContainer.getEditOrderState.and.callFake(() => {
            var editOrderState = getOrderDetailsServiceResult();
            return Observable.of(editOrderState);
        });


 function getOrderDetailsServiceResult() {
        return {
                data: {
                        shipAddressEdited: true,
                        shipInstructionEditted: true
                    }
                };
    }

---

不，它没有解决问题。尽管如此，即使在执行了you@Krishnan：您是否已设置

组件。existedaffectordernumbers=true

？让我更新我的代码

constructor(public editOrderContainer: EditOrderContainer,.....)

export class EditOrderContainerStub{
   getEditOrderState(){
     return of({
       data: {
          shipAddressEditted: true,
          shipInstructionEditted : true
        }
     })
   }
}

beforeEach(async () => {
    providers:[{provide: EditOrderContainer , useClass: EditOrderContainerStub}],

//....... your declaration

});

it('verify if Shipping instructions text is set to true if instructions test is changed.', () => {
     component.existedAffectedOrderNumbers = true;
     component.ngOnInit();
     expect(component.hasShippingDetailsChanged).toBeTruthy();
 });

editOrderContainer = jasmine.createSpyObj('editOrderContainer', ['getEditOrderState', 'rebookOrder']);
editOrderContainer.getEditOrderState.and.callFake(() => {
            var editOrderState = getOrderDetailsServiceResult();
            return Observable.of(editOrderState);
        });


 function getOrderDetailsServiceResult() {
        return {
                data: {
                        shipAddressEdited: true,
                        shipInstructionEditted: true
                    }
                };
    }