我正在尝试 使用Jest在Angular 13中测试包含来自ng-bootstrap的组件的组件并得到以下错误:.Cannot access 'NgbNavLink' before initialization
我有一个使用NgbModal的组件MyComponent。我只想为这个组件创建测试,所以我需要在我的测试中导入NgbModule。但是,导入似乎不起作用,因为我收到以下错误:
FAIL src/app/pages/kafkaconnect/kafkaconnect.component.spec.ts
● Test suite failed to run
ReferenceError: Cannot access 'NgbNavLink' before initialization
2 |
3 | import { MyComponent } from './mycomponent.component';
> 4 | import { NgbModule } from "@ng-bootstrap/ng-bootstrap";
| ^
at Object.<anonymous> (node_modules/@ng-bootstrap/ng-bootstrap/fesm2015/ng-bootstrap.mjs:6651:991)
at Object.<anonymous> (src/app/pages/kafkaconnect/kafkaconnect.component.spec.ts:4:1)
这是我的测试课:
import { ComponentFixture, TestBed } from '@angular/core/testing';
import { MyComponent } from './mycomponent.component';
import { NgbModule } from "@ng-bootstrap/ng-bootstrap";
describe('MyComponent', () => {
let component: MyComponent;
let fixture: ComponentFixture<MyComponent>;
beforeEach(async () => {
await TestBed.configureTestingModule({
declarations: [ MyComponent ],
imports: [ NgbModule ],
})
.compileComponents();
});
beforeEach(() => {
fixture = TestBed.createComponent(MyComponent);
component = fixture.componentInstance;
fixture.detectChanges();
});
it('should create', () => {
expect(component).toBeTruthy();
});
});
我正在使用Angular 13、ng-bootstrap 11.0.0-rc.0和bootstrap 4.6.1。我知道这些版本是最新的,但是我在服务或构建我的应用程序时没有收到任何错误。
Angular CLI: 13.0.3
Node: 16.13.0
Package Manager: npm 8.1.0
OS: win32 x64
Angular: 13.0.2
... animations, common, compiler, compiler-cli, core, forms
... localize, platform-browser, platform-browser-dynamic, router
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1300.3
@angular-devkit/build-angular 13.0.3
@angular-devkit/core 13.0.3
@angular-devkit/schematics 13.0.3
@angular/cli 13.0.3
@schematics/angular 13.0.3
rxjs 6.6.7
typescript 4.4.4
最后,我正在使用jest 27.3.1。当我使用 Angular 时,我已经按照本文档配置了jest-preset-angular。
关于为什么我会收到此错误的任何线索?