angular-docs-cn/modules/@angular/compiler/test/ng_module_resolver_mock_spe...

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TypeScript

/**
* @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 {Injector, NgModule} from '@angular/core';
import {beforeEach, describe, expect, inject, it} from '@angular/core/testing/testing_internal';
import {MockNgModuleResolver} from '../testing/index';
export function main() {
describe('MockNgModuleResolver', () => {
let ngModuleResolver: MockNgModuleResolver;
beforeEach(inject([Injector], (injector: Injector) => {
ngModuleResolver = new MockNgModuleResolver(injector);
}));
describe('NgModule overriding', () => {
it('should fallback to the default NgModuleResolver when templates are not overridden',
() => {
const ngModule = ngModuleResolver.resolve(SomeNgModule);
expect(ngModule.declarations).toEqual([SomeDirective]);
});
it('should allow overriding the @NgModule', () => {
ngModuleResolver.setNgModule(
SomeNgModule, new NgModule({declarations: [SomeOtherDirective]}));
const ngModule = ngModuleResolver.resolve(SomeNgModule);
expect(ngModule.declarations).toEqual([SomeOtherDirective]);
});
});
});
}
class SomeDirective {}
class SomeOtherDirective {}
@NgModule({declarations: [SomeDirective]})
class SomeNgModule {
}