小编fil*_*cpp的帖子

我使用ComponentFactoryResolver动态创建组件,并使用ReflectiveInjector动态传递它们.

这看起来很像

@ViewChild('container', {read: ViewContainerRef}) container: ViewContainerRef;
let inputProviders = [{
    provide: 'injectedInput',
    useValue: inputValue
}];
let resolvedInputs = ReflectiveInjector.resolve(inputProviders);
let injector = ReflectiveInjector.fromResolvedProviders(resolvedInputs, this.container.parentInjector);
let factory = componentInfo.factory.resolveComponentFactory(componentInfo.component);
let component = factory.create(injector);
this.container.insert(component.hostView);

然后动态创建的组件看起来像这样

import {Component, Injector} from '@angular/core';  
@Component({
    selector: 'mycomponent'
})
export class MyComponent {
    private id: string;

    constructor(private injector: Injector) {
        this.id = injector.get('injectedInput');
    }
}

我正在尝试为使用核心Injector模块的组件编写单元测试.我收到以下错误:

错误:没有injectInput的提供者!

我的spec文件看起来像这样:

import { MyComponent } from 'here';
describe('MyComponent', () => {
    beforeEach(() => {
        TestBed.configureTestingModule({
            providers: [
                MyComponent …