angular-cn/modules/@angular/router/test/router_preloader.spec.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 {Component, NgModule, NgModuleFactoryLoader} from '@angular/core';
import {ComponentFixture, TestBed, fakeAsync, inject, tick} from '@angular/core/testing';
import {Router, RouterModule} from '../index';
import {PreloadAllModules, PreloadingStrategy, RouterPreloader} from '../src/router_preloader';
import {RouterTestingModule, SpyNgModuleFactoryLoader} from '../testing';
describe('RouterPreloader', () => {
@Component({template: ''})
class LazyLoadedCmp {
}
@Component({})
class BlankCmp {
}
describe('should preload configurations', () => {
@NgModule({
declarations: [LazyLoadedCmp],
imports: [RouterModule.forChild([{path: 'LoadedModule2', component: LazyLoadedCmp}])]
})
class LoadedModule2 {
}
@NgModule(
{imports: [RouterModule.forChild([{path: 'LoadedModule1', loadChildren: 'expected2'}])]})
class LoadedModule1 {
}
beforeEach(() => {
TestBed.configureTestingModule({
imports: [RouterTestingModule.withRoutes([{path: 'lazy', loadChildren: 'expected'}])],
providers: [{provide: PreloadingStrategy, useExisting: PreloadAllModules}]
});
});
it('should work',
fakeAsync(inject(
[NgModuleFactoryLoader, RouterPreloader, Router],
(loader: SpyNgModuleFactoryLoader, preloader: RouterPreloader, router: Router) => {
loader.stubbedModules = {expected: LoadedModule1, expected2: LoadedModule2};
preloader.preload().subscribe(() => {});
tick();
const c = router.config;
expect(c[0].loadChildren).toEqual('expected');
const loaded: any = (<any>c[0])._loadedConfig.routes;
expect(loaded[0].path).toEqual('LoadedModule1');
const loaded2: any = (<any>loaded[0])._loadedConfig.routes;
expect(loaded2[0].path).toEqual('LoadedModule2');
})));
});
describe('should not load configurations with canLoad guard', () => {
@NgModule({
declarations: [LazyLoadedCmp],
imports: [RouterModule.forChild([{path: 'LoadedModule1', component: LazyLoadedCmp}])]
})
class LoadedModule {
}
beforeEach(() => {
TestBed.configureTestingModule({
imports: [RouterTestingModule.withRoutes(
[{path: 'lazy', loadChildren: 'expected', canLoad: ['someGuard']}])],
providers: [{provide: PreloadingStrategy, useExisting: PreloadAllModules}]
});
});
it('should work',
fakeAsync(inject(
[NgModuleFactoryLoader, RouterPreloader, Router],
(loader: SpyNgModuleFactoryLoader, preloader: RouterPreloader, router: Router) => {
loader.stubbedModules = {expected: LoadedModule};
preloader.preload().subscribe(() => {});
tick();
const c = router.config;
expect(!!((<any>c[0])._loadedConfig)).toBe(false);
})));
});
describe('should ignore errors', () => {
@NgModule({
declarations: [LazyLoadedCmp],
imports: [RouterModule.forChild([{path: 'LoadedModule1', component: LazyLoadedCmp}])]
})
class LoadedModule {
}
beforeEach(() => {
TestBed.configureTestingModule({
imports: [RouterTestingModule.withRoutes([
{path: 'lazy1', loadChildren: 'expected1'}, {path: 'lazy2', loadChildren: 'expected2'}
])],
providers: [{provide: PreloadingStrategy, useExisting: PreloadAllModules}]
});
});
it('should work',
fakeAsync(inject(
[NgModuleFactoryLoader, RouterPreloader, Router],
(loader: SpyNgModuleFactoryLoader, preloader: RouterPreloader, router: Router) => {
loader.stubbedModules = {expected2: LoadedModule};
preloader.preload().subscribe(() => {});
tick();
const c = router.config;
expect(!!((<any>c[0])._loadedConfig)).toBe(false);
expect(!!((<any>c[1])._loadedConfig)).toBe(true);
})));
});
});