我的组件有:
export class JsonformComponent implements OnInit {
@Input() dataplanDetails: any;
public layout: any = [];
public schema: any = {};
ngOnInit() {
this.dataplanDetails.subscribe(res => {
return this.parseSchema(res.details.submissionFileSchema)
})
}
parseSchema(submissionFileSchema) {
console.log('in parseSchema')
const fileSchema = JSON.parse(submissionFileSchema)
我的测试是:
fdescribe('JsonformComponent', () => {
let component: JsonformComponent;
let fixture: ComponentFixture<JsonformComponent>;
const mockObservable = new Subject();
beforeEach(async(() => {
TestBed.configureTestingModule({
schemas: [CUSTOM_ELEMENTS_SCHEMA, NO_ERRORS_SCHEMA],
providers: [
{provide: Store, useClass: StoreStub}
],
imports: [],
declarations: [JsonformComponent]
}).compileComponents();
}));
beforeEach(async(() => {
fixture = TestBed.createComponent(JsonformComponent);
component = fixture.componentInstance;
component['dataplanDetails'] = mockObservable
fixture.detectChanges();
}));
it('should create', () => {
expect(component).toBeTruthy();
});
it('should trigger a parseSchema event', () => {
mockObservable.next({"details": { "submissionFileSchema": `{"properties": true, "layout": [true]}`}})
spyOn(component, 'parseSchema').and.returnValue(true);
expect(component.parseSchema).toHaveBeenCalled();
})
console.log
会触发,因此它肯定在 parseSchema
函数中。但测试失败,预期 spy parseSchema 已被调用。
最佳答案
您正在可观察者触发该代码后设置您的 spy 。将您的 spy 移动到您将数据推送到您的主题的上方。
it('should trigger a parseSchema event', () => {
spyOn(component, 'parseSchema').and.returnValue(true);
mockObservable.next({"details": { "submissionFileSchema": `{"properties": true, "layout": [true]}`}})
expect(component.parseSchema).toHaveBeenCalled();
})
关于angular - 正在调用的 spy 返回未通过 angular5 单元测试调用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49739311/