以前の同様の質問を見ると、これに対する明確な答えがあったようには見えません。
これが何が起こっているかです。angular-cli ツールを使用して angular2 アプリを構築しています (ベータ 16 が実行されており、angular 2.0.1 およびルーター 3.0.1.
「ng test」を実行すると、すべてのテストがパスし、app.component が期待されます。(ng serve は正常に動作しているなど)
ここにいくつかのコードがあります:
app.module.ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AppComponent } from './app.component';
import { HomeComponent } from './home/home.component';
import { HealthComponent } from './health/health.component';
import { MonitorModule } from './monitor/monitor.module';
import { PlanComponent } from './plan/plan.component';
import { ConfigureComponent } from './configure/configure.component';
import { DashboardComponent } from './dashboard/dashboard.component';
import { TroubleshootComponent } from './troubleshoot/troubleshoot.component';
import { HeaderComponent } from './ui/header/header.component';
import { OnboardingModule } from './onboarding/onboarding.module';
import { routing, appRoutingProviders } from './app.routing';
@NgModule({
imports: [
BrowserModule,
FormsModule,
HttpModule,
routing,
MonitorModule,
OnboardingModule
],
declarations: [
AppComponent,
HomeComponent,
HealthComponent,
PlanComponent,
ConfigureComponent,
DashboardComponent,
TroubleshootComponent,
HeaderComponent
],
providers: [
appRoutingProviders
],
bootstrap: [AppComponent]
})
export class AppModule {
}
app.component.ts
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-root',
templateUrl: './app.component.html'
})
export class AppComponent {
}
app.component.spec.ts
/* tslint:disable:no-unused-variable */
import { TestBed, async } from '@angular/core/testing';
import { APP_BASE_HREF } from '@angular/common';
import { routing, appRoutingProviders } from './app.routing';
import { AppComponent } from './app.component';
import { HomeComponent } from './home/home.component';
import { HeaderComponent } from './ui/header/header.component';
import { HealthComponent } from './health/health.component';
import { PlanComponent } from './plan/plan.component';
import { ConfigureComponent } from './configure/configure.component';
import { DashboardComponent } from './dashboard/dashboard.component';
import { TroubleshootComponent } from './troubleshoot/troubleshoot.component';
describe('App: Ng2Test2', () => {
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [
AppComponent,
HeaderComponent,
HomeComponent,
HealthComponent,
PlanComponent,
ConfigureComponent,
DashboardComponent,
TroubleshootComponent
],
imports: [
routing
],
providers: [
appRoutingProviders,
{ provide: APP_BASE_HREF, useValue : '/' }
]
});
});
it('should create the app', async(() => {
let fixture = TestBed.createComponent(AppComponent);
let app = fixture.debugElement.componentInstance;
expect(app).toBeTruthy();
}));
});
app.component.html
<app-header></app-header>
<router-outlet></router-outlet>
最後に、「ng test」を実行したときに表示されるエラーは次のとおりです。
App: Ng2Test2 should create the app FAILED
Failed: Error in ./AppComponent class AppComponent - inline template:2:2 caused by: Bootstrap at least one component before injecting Router.
Error: Bootstrap at least one component before injecting Router.
at setupRouter (webpack:///Users/jtaylor/Projects/hmng-angular/hmng-ng2/~/@angular/router/src/router_module.js:190:0 <- src/test.ts:29132:15)
このエラーを防ぐためにさまざまなことを試しましたが、これを停止させることはできません!
これについて何か考えはありますか?
編集:コンストラクターでルーターを使用するこのコンポーネントまで追跡しました:
header.component.ts
import { Component, OnInit } from '@angular/core';
import { Router, ActivatedRoute, NavigationEnd } from '@angular/router';
import { AppComponent } from '../../app.component';
@Component({
selector: 'app-header',
templateUrl: './header.component.html'
})
export class HeaderComponent implements OnInit {
section: any;
// router: Router;
// activateRoute: ActivatedRoute;
constructor(
public router: Router,
public activatedRoute: ActivatedRoute
) {}
ngOnInit() {
this.router.events.subscribe(e => {
if (e instanceof NavigationEnd) {
this.setActiveNavTab(e.url.replace(/^\/([^\/]*).*$/, '$1'));
}
});
}
setActiveNavTab(section: string) {
this.section = section;
}
}
では、単体テストでそのコンストラクターの前にコンポーネントをブートストラップするにはどうすればよいでしょうか?