角度：单元测试路由：预计'/route'

Question

正在我的 Angular 应用程序下对我的路由进行单元测试，

我的路由在 app.module.ts 下导入的特定模块中解散

，这是我的路由模块：

app-routing.module.ts

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { LoginComponent } from './login/login.component';
import { WelcomeComponent } from './welcome/welcome.component';
import { CustomersListComponent } from './customer/customers-list/customers-list.component';
import { CustomerDetailComponent } from './customer/customer-detail/customer-detail.component';
import { ApplicationParametersComponent } from './superAdministrator/application-parameters/application-parameters.component';
import { InscriptionComponent } from './inscription/inscription.component';
const routes: Routes = [
{ path: '', redirectTo: '/login', pathMatch: 'full' },
{ path: 'login',  component: LoginComponent },
{ path: 'login/:keyWording',  component: LoginComponent },
{ path: 'welcome', component: WelcomeComponent },
{ path: 'customers-list', component: CustomersListComponent },
{ path: 'customer-create', component: CustomerDetailComponent },
{ path: 'customer-detail/:idCustomer', component: CustomerDetailComponent },
{ path: 'application-parameters', component: ApplicationParametersComponent },
{ path: 'inscription', component: InscriptionComponent }
];
@NgModule({
imports: [ RouterModule.forRoot(routes) ],
exports: [ RouterModule ]
})
export class AppRoutingModule {}

这是我的app.module.ts(用于导入路由模块：

import { NgModule } from '@angular/core';
import { AppRoutingModule } from './app-routing.module';
import { SharedModule } from './../shared/shared.module';
import { LoginComponent } from './login/login.component';
import { WelcomeComponent } from './welcome/welcome.component';
import { AppComponent } from './app.component';
import { CustomerModule } from './customer/customer.module';
import { ApplicationParametersComponent } from './superAdministrator/application-parameters/application-parameters.component';
import { InscriptionComponent } from './inscription/inscription.component';
import { DxProgressBarModule } from 'devextreme-angular';
@NgModule({
declarations: [
AppComponent,
LoginComponent,
WelcomeComponent,
ApplicationParametersComponent,
InscriptionComponent
],
imports: [
AppRoutingModule, /* HERE IS THE ROUTING FILE */
SharedModule,
CustomerModule,
DxProgressBarModule/*,
BrowserAnimationsModule,
BrowserModule*/
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }

在我的测试文件下，我从这个博客中关注了 tuto： https://codecraft.tv/courses/angular/unit-testing/routing/

我的路由测试测试文件如下：

import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import { AppComponent } from './app.component';
// DevExtreme Module
import {DxProgressBarModule, DxTemplateModule} from 'devextreme-angular';
// Router Modules
import {RouterTestingModule} from '@angular/router/testing';
// Services and HTTP Module
import { SessionService } from './../shared/service';
import { HttpService } from './../shared/service';
import {HttpModule} from '@angular/http';
// Routs testing
import {Router, RouterModule} from '@angular/router';
import {fakeAsync, tick} from '@angular/core/testing';
import {Location} from '@angular/common';
import {LoginComponent} from './login/login.component';
import {WelcomeComponent} from './welcome/welcome.component';
import {ApplicationParametersComponent} from './superAdministrator/application-parameters/application-parameters.component';
import {InscriptionComponent} from './inscription/inscription.component';
import {CUSTOM_ELEMENTS_SCHEMA} from '@angular/core';
import {FormsModule} from '@angular/forms';

describe('Testing the application routes', () => {
let location: Location;
let router: Router;
let fixture;
beforeEach(() => {
TestBed.configureTestingModule({
imports: [RouterTestingModule, FormsModule , DxTemplateModule , HttpModule ],
providers:    [SessionService , HttpService ],
declarations: [
AppComponent,
LoginComponent,
WelcomeComponent,
ApplicationParametersComponent,
InscriptionComponent
],
schemas: [ CUSTOM_ELEMENTS_SCHEMA ]
});
router = TestBed.get(Router);
location = TestBed.get(Location);
fixture = TestBed.createComponent(AppComponent);
router.initialNavigation();
});
it('navigate to "inscription" takes you to /inscription', fakeAsync(() => {
router.navigate(['inscription']);
tick();
expect(location.path()).toBe('/inscription');
}));
});

我的测试失败了，表明这一点：

Expected '' to be '/inscription'.
at Object.<anonymous> (webpack:///src/app/app-routing.spec.ts:52:28 <- src/test.ts:143891:33)
at Object.<anonymous> (webpack:///~/@angular/core/@angular/core/testing.es5.js:348:0 <- src/test.ts:34691:26)
at ZoneDelegate.invoke (webpack:///~/zone.js/dist/zone.js:391:0 <- src/polyfills.ts:1546:26)
at ProxyZoneSpec.Array.concat.ProxyZoneSpec.onInvoke (webpack:///~/zone.js/dist/proxy.js:79:0 <- src/test.ts:232357:39)

想法？？

Answer 1

您忘记在测试文件中将路由导入到RouterTestingModule。

您必须export关键字添加到AppRoutingModule文件中的const routes中，然后才能import测试文件中的路由(并将它们添加到测试配置中(。

import {routes} from '...'; // I don't have the app-routing.module file path.
...
...
...
beforeEach(() => {
TestBed.configureTestingModule({
imports: [RouterTestingModule.withRoutes(routes), <-- I added the routes here.
FormsModule , DxTemplateModule , HttpModule 
],
providers:    [SessionService , HttpService ],
declarations: [
AppComponent,
LoginComponent,
WelcomeComponent,
ApplicationParametersComponent,
InscriptionComponent
],
schemas: [ CUSTOM_ELEMENTS_SCHEMA ]
});
router = TestBed.get(Router);
location = TestBed.get(Location);
fixture = TestBed.createComponent(AppComponent);
router.initialNavigation();
});

如果你没有在路由器测试模块中加载路由，它将无法知道你navigate时去哪里，所以它会回到原始页面，并在控制台中出现错误。

您遵循的教程有一种非常奇怪的方法来处理路由tick()因为用于fakeAsync测试，这是一个真正的async。所以你必须使用router.navigate返回的Promise<boolean>：

it('navigate to "inscription" takes you to /inscription', () => {
router.navigate(['inscription']).then(() => {
expect(location.path()).toBe('/inscription');
});
});

如您所见，您还可以删除fakeAsync因为这不是假的，这是一个async调用。

在 plunkr 上看到它