Javascript Angular 8测试ngOnInit不调用服务方法
因此,我正在创建一个测试,以检查agreementComponent方法Ngonit是否正在调用operatorService.getOperators 到目前为止,我已经成功地创建了如下内容:Javascript Angular 8测试ngOnInit不调用服务方法,javascript,angular,typescript,karma-jasmine,Javascript,Angular,Typescript,Karma Jasmine,因此,我正在创建一个测试,以检查agreementComponent方法Ngonit是否正在调用operatorService.getOperators 到目前为止,我已经成功地创建了如下内容: import {AgreementComponent} from './agreement.component'; import {async, TestBed} from '@angular/core/testing'; import {ActivatedRoute, convertToParamMa
import {AgreementComponent} from './agreement.component';
import {async, TestBed} from '@angular/core/testing';
import {ActivatedRoute, convertToParamMap} from '@angular/router';
import {RouterTestingModule} from '@angular/router/testing';
import {OperatorService} from '../../../services/operator.service';
import {of} from 'rxjs/internal/observable/of';
import {FormsModule} from '@angular/forms';
import {AgreementService} from '../../../services/agreement.service';
import {AccountService} from '../../../services/account.service';
import {SessionService} from '../../../services/session.service';
import {SettingsService} from '../../../services/settings.service';
export class MockOperatorService {
getOperators() {
return of({data: 'someVal'});
}
}
export class MockAgreementService {
getAgreementdraft() {
return of({data: 'someVal'});
}
}
export class MockAccountService {
getFeeAccounts() {
return of({data: 'someVal'});
}
}
export class MockSessionService {
getSession() {
return of({data: 'someVal'});
}
}
export class MockSettingsService {
getSettings() {
return of({data: 'someVal'});
}
}
describe('agreementComponent', () => {
let component;
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [AgreementComponent],
imports: [
RouterTestingModule,
FormsModule
],
providers: [
{
provide: ActivatedRoute, useValue:
{
snapshot: {
paramMap: convertToParamMap({agreementId: '0'})
}
}
},
{provide: OperatorService, useClass: MockOperatorService},
{provide: AgreementService, useClass: MockAgreementService},
{provide: AccountService, useClass: MockAccountService},
{provide: SessionService, useClass: MockSessionService},
{provide: SettingsService, useClass: MockSettingsService},
]
});
}));
beforeEach(() => {
const fixture = TestBed.createComponent(AgreementComponent);
component = fixture.componentInstance;
fixture.detectChanges();
});
it('should call operators service', () => {
spyOn(MockOperatorService.prototype, 'getOperators').and.callThrough();
component.ngOnInit();
expect(MockOperatorService.prototype.getOperators).toHaveBeenCalled();
});
});
但我接到了一个电话。我不确定我是否创建了spyOn并调用了ngOnInit方法 试试这个
在first Before之前,每个块将变量声明为
let operatorService: OperatorService;
在beforeach块中,添加此行operatorService=TestBed.getOperatorService;在底部
并将您的测试用例更新为
it('should call operators service', () => {
spyOn(operatorService, 'getOperators');
component.ngOnInit();
expect(operatorService.getOperators).toHaveBeenCalled();
});