Question

我正在测试数据为空时的else条件。我指的是if（data）的其他内容。我已经检查了何时没有数据，console.log（'xxx'，data）;的值。的长度为0。我还使用了空库{}和return observable来模拟返回空observable的服务。测试未通过未定义“预期对象（{}）”的提示。

以下是到目前为止我一直在尝试的事情。不知道我要去哪里错了

 //component.agreementsService.getOutstandingAgreements(0).subscribe(result => expect(result.length).toBe(0));
    //component.agreementsService.getOutstandingAgreements(0).subscribe(result => expect(result.length).not.toBeGreaterThan(0));
    component.agreementsService.getOutstandingAgreements(1).subscribe(result => expect(result).toBe(undefined));
   // expect(component.agreementsService.getOutstandingAgreements(0)).toBe(undefined);
    //expect(component.dataLength).toBe(undefined);

有人可以告诉我问题出在哪里

组件

 import { Observable, of, empty } from 'rxjs';

      public getOutstandingAgreements(Id: number) {
        console.log(Id);

        this.agreementsService.getOutstandingAgreements(Id).subscribe((data: AgreementsModel[]) => {
         console.log('xxx', data);
          if (data.length > 0) {
            this.myData = data;
            this.agreementData = this.myData[0].data;
            this.agreementLength = this.myData.length;
            this.calculateRemainingDaysLeft(0);
          }
        });
      }

测试

 let mockAgreementsService: Mock<AgreementsService>;
         const agreementModel : AgreementsModel[] = [{ userAgreementId: 1,
            agreementId: 1,
            code: '',
            userAgreementStateId: 1,
            userAgreementStateName: '',
            acceptanceWindowExpiry: new Date((new Date()).getTime() + 24*60*60*1000) ,
            version: '',
            data: '<h1></h1>',
            authoredById: 1,
            authoredByName: '',
            authored: new Date((new Date()).getTime() + 24*60*60*1000)  ,
            issuedById: 1,
            issuedByName: '',
            issued: new Date((new Date()).getTime() + 24*60*60*1000) }];


          configureTestSuite(() => {
            TestBed.configureTestingModule({
              imports: [SharedModule, FontAwesomeModule],
              declarations: [AgreementComponent, CustomScrollDirective],
              providers: [{ provide: UserService, useValue: mockUserService },
              { provide: AgreementsService, useFactory: () => mockAgreementsService.Object   }]
            });
          });

          function setupComponent() {
            fixture = TestBed.createComponent(AgreementComponent);
            component = fixture.componentInstance;

          }


          beforeEach(() => {
            mockAgreementsService = new Mock<AgreementsService>({
              getOutstandingAgreements: () => of(agreementModel),
              updateAgreement: () => Promise.resolve([])
            });
            });




           fit('should not return data when  getOutstandingAgreements is called', () => {
setupComponent();
mockAgreementsService.extend({ getOutstandingAgreements: () => of(<AgreementsModel[]>{})});
//component.agreementsService.getOutstandingAgreements(0).subscribe(result => expect(result.length).toBe(0));
//component.agreementsService.getOutstandingAgreements(0).subscribe(result => expect(result.length).not.toBeGreaterThan(0));
component.agreementsService.getOutstandingAgreements(1).subscribe(result => expect(result).toBe(undefined));
// expect(component.agreementsService.getOutstandingAgreements(0)).toBe(undefined);
//expect(component.dataLength).toBe(undefined);

}）;

更新1

以下内容通过了测试，但是测试覆盖率失败，表明未满足其他条件。

mockAgreementsService.extend({ getOutstandingAgreements: () => of<AgreementsModel[]>([]) });
component.agreementsService.getOutstandingAgreements(0).subscribe(result => expect(result.length).not.toBeGreaterThan(0));

Answer 1

您正在订阅可观察对象，因此它不在测试中的getOutstandingArguments函数内部的订阅中。

要测试预订中的逻辑，需要确保您的操作将在测试中触发预订，因此，在这种情况下，您想直接调用该方法。您希望测试像这样：

it('should not set data when getArguments is called', () => {
    /* setup return value to be empty array */
    mockAgreementsService.extend({ getOutstandingAgreements: () => of(<AgreementsModel[]>{})});

    // after setting up the return value now call component.getOutstandingAgreements
    component.getOutstandingAgreemnts(0);

    // now check that data has not been modified
    // note I do not know what the initial value of myData is I am assuming it is an empty array
    expect(component.myData.length).toBe(0);
    /* if myData is not initialized and not set to an empty array by default do the following */
    expect(component.myData).toBe(undefined);
}

现在，它应该位于Component中方法内部创建的可观察对象的预订之内，与您在测试中所做的预订相对应。

else条件未通过测试覆盖率覆盖

1 个答案: