angular-docs-cn/modules/@angular/compiler/testing/ng_module_resolver_mock.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 {NgModuleResolver} from '@angular/compiler';
import {Compiler, Injectable, Injector, NgModule, Type} from '@angular/core';
@Injectable()
export class MockNgModuleResolver extends NgModuleResolver {
private _ngModules = new Map<Type<any>, NgModule>();
constructor(private _injector: Injector) { super(); }
/**
* Overrides the {@link NgModule} for a module.
*/
setNgModule(type: Type<any>, metadata: NgModule): void {
this._ngModules.set(type, metadata);
this._clearCacheFor(type);
}
/**
* Returns the {@link NgModule} for a module:
* - Set the {@link NgModule} to the overridden view when it exists or fallback to the
* default
* `NgModuleResolver`, see `setNgModule`.
*/
resolve(type: Type<any>, throwIfNotFound = true): NgModule {
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return this._ngModules.get(type) || super.resolve(type, throwIfNotFound);
}
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private get _compiler(): Compiler { return this._injector.get(Compiler); }
private _clearCacheFor(component: Type<any>) { this._compiler.clearCacheFor(component); }
}