angular-cn/modules/@angular/router/testing/router_testing_module.ts

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {Location, LocationStrategy} from '@angular/common';
import {MockLocationStrategy, SpyLocation} from '@angular/common/testing';
import {Compiler, ComponentResolver, Injectable, Injector, NgModule, NgModuleFactory, NgModuleFactoryLoader} from '@angular/core';
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import {Route, Router, RouterOutletMap, UrlSerializer} from '../index';
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import {ROUTES} from '../src/router_config_loader';
import {ROUTER_PROVIDERS, RouterModule} from '../src/router_module';
import {flatten} from '../src/utils/collection';
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/**
* A spy for {@link NgModuleFactoryLoader} that allows tests to simulate the loading of ng module
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* factories.
*
* @experimental
*/
@Injectable()
export class SpyNgModuleFactoryLoader implements NgModuleFactoryLoader {
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public stubbedModules: {[path: string]: any} = {};
constructor(private compiler: Compiler) {}
load(path: string): Promise<NgModuleFactory<any>> {
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if (this.stubbedModules[path]) {
return this.compiler.compileModuleAsync(this.stubbedModules[path]);
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} else {
return <any>Promise.reject(new Error(`Cannot find module ${path}`));
}
}
}
function setupTestingRouter(
resolver: ComponentResolver, urlSerializer: UrlSerializer, outletMap: RouterOutletMap,
location: Location, loader: NgModuleFactoryLoader, injector: Injector, routes: Route[][]) {
return new Router(
null, resolver, urlSerializer, outletMap, location, injector, loader, flatten(routes));
}
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/**
* A module setting up the router that should be used for testing.
* It provides spy implementations of Location, LocationStrategy, and NgModuleFactoryLoader.
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*
* # Example:
*
* ```
* beforeEach(() => {
* configureModule({
* modules: [RouterTestingModule],
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* providers: [provideRoutes(
* [{path: '', component: BlankCmp}, {path: 'simple', component: SimpleCmp}])]
* });
* });
* ```
*
* @experimental
*/
@NgModule({
exports: [RouterModule],
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providers: [
ROUTER_PROVIDERS,
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{provide: Location, useClass: SpyLocation},
{provide: LocationStrategy, useClass: MockLocationStrategy},
{provide: NgModuleFactoryLoader, useClass: SpyNgModuleFactoryLoader},
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{
provide: Router,
useFactory: setupTestingRouter,
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deps: [
ComponentResolver, UrlSerializer, RouterOutletMap, Location, NgModuleFactoryLoader,
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Injector, ROUTES
]
},
]
})
export class RouterTestingModule {
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}