Angular Karma Jasmine 错误：非法状态：无法加载指令摘要

我正在开发一台github repository(Angular 7和Angular -CLI)，我有一些测试，卡玛和茉莉在主分支工作.

现在我试图添加延迟加载特性，问题是，以前通过的测试现在没有.这很有趣，因为只有来自延迟加载模块的测试失败了...

以下是代码和错误:

import {async, TestBed} from '@angular/core/testing';
import {APP_BASE_HREF} from '@angular/common';
import {AppModule} from '../../app.module';
import {HeroDetailComponent} from './hero-detail.component';

describe('HeroDetailComponent', () => {
  beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [AppModule
      ],
      providers: [
        {provide: APP_BASE_HREF, useValue: '/'}
      ],
    }).compileComponents();
  }));

  it('should create hero detail component', (() => {
    const fixture = TestBed.createComponent(HeroDetailComponent);
    const component = fixture.debugElement.componentInstance;
    expect(component).toBeTruthy();
  }));
});

错误在于:

Chrome 58.0.3029 (Mac OS X 10.12.6) HeroDetailComponent should create hero detail component FAILED
    Error: Illegal state: Could not load the summary for directive HeroDetailComponent.
        at syntaxError Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/@angular/compiler/@angular/compiler.es5.js:1690:22)
        at CompileMetadataResolver.getDirectiveSummary Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/@angular/compiler/@angular/compiler.es5.js:15272:1)
        at JitCompiler.getComponentFactory Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/@angular/compiler/@angular/compiler.es5.js:26733:26)
        at TestingCompilerImpl.getComponentFactory Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/@angular/compiler/@angular/compiler/testing.es5.js:484:1)
        at TestBed.createComponent Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/@angular/core/@angular/core/testing.es5.js:874:1)
        at Function.TestBed.createComponent Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/@angular/core/@angular/core/testing.es5.js:652:1)
        at UserContext.it Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/src/app/heroes/hero-detail/hero-detail.component.spec.ts:18:29)
        at ZoneDelegate.webpackJsonp.../../../../zone.js/dist/zone.js.ZoneDelegate.invoke Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/zone.js/dist/zone.js:391:1)
        at ProxyZoneSpec.onInvoke Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/zone.js/dist/proxy.js:79:1)
        at ZoneDelegate.webpackJsonp.../../../../zone.js/dist/zone.js.ZoneDelegate.invoke Users/ismael.ramos.silvan/WebstormProjects/angular4-example-app/~/zone.js/dist/zone.js:390:1)

您可以查看整个项目，如果需要，可以查看更多详细信息.

UPDATE: added declaration like this:

beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [
        AppModule
      ],
      declarations: [HeroDetailComponent],
      providers: [
        {provide: APP_BASE_HREF, useValue: '/'}
      ],
    }).compileComponents();
  }));

现在，出现了新的错误:

The pipe 'translate' could not be found ("<h1 class="section-title">{{[ERROR ->]'heroDetail' | translate}}</h1>
    <md-progress-spinner *ngIf="!hero"
                         class="progre"): ng:///DynamicTestModule/HeroDetailComponent.html@0:28
    Can't bind to 'color' since it isn't a known property of 'md-progress-spinner'.

还有更多...就像Angle material中的所有指令和组件一样，ngx translate/core中的管道平移似乎不包括在内...