angular-cn/packages/router/test/regression_integration.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 {CommonModule} from '@angular/common';
import {Component, ContentChild, NgModule, TemplateRef, Type, ViewChild, ViewContainerRef} from '@angular/core';
import {ComponentFixture, fakeAsync, TestBed, tick} from '@angular/core/testing';
import {Router} from '@angular/router';
import {RouterTestingModule} from '@angular/router/testing';
describe('Integration', () => {
describe('routerLinkActive', () => {
it('should not cause infinite loops in the change detection - #15825', fakeAsync(() => {
@Component({selector: 'simple', template: 'simple'})
class SimpleCmp {
}
@Component({
selector: 'some-root',
template: `
<div *ngIf="show">
<ng-container *ngTemplateOutlet="tpl"></ng-container>
</div>
<router-outlet></router-outlet>
<ng-template #tpl>
<a routerLink="/simple" routerLinkActive="active"></a>
</ng-template>`
})
class MyCmp {
show: boolean = false;
}
@NgModule({
imports: [CommonModule, RouterTestingModule],
declarations: [MyCmp, SimpleCmp],
entryComponents: [SimpleCmp],
})
class MyModule {
}
TestBed.configureTestingModule({imports: [MyModule]});
const router: Router = TestBed.inject(Router);
const fixture = createRoot(router, MyCmp);
router.resetConfig([{path: 'simple', component: SimpleCmp}]);
router.navigateByUrl('/simple');
advance(fixture);
const instance = fixture.componentInstance;
instance.show = true;
expect(() => advance(fixture)).not.toThrow();
}));
it('should set isActive right after looking at its children -- #18983', fakeAsync(() => {
@Component({
template: `
<div #rla="routerLinkActive" routerLinkActive>
isActive: {{rla.isActive}}
<ng-template let-data>
<a [routerLink]="data">link</a>
</ng-template>
<ng-container #container></ng-container>
</div>
`
})
class ComponentWithRouterLink {
// TODO(issue/24571): remove '!'.
@ViewChild(TemplateRef, {static: true}) templateRef!: TemplateRef<any>;
// TODO(issue/24571): remove '!'.
@ViewChild('container', {read: ViewContainerRef, static: true})
container!: ViewContainerRef;
addLink() {
this.container.createEmbeddedView(this.templateRef, {$implicit: '/simple'});
}
removeLink() {
this.container.clear();
}
}
@Component({template: 'simple'})
class SimpleCmp {
}
TestBed.configureTestingModule({
imports: [RouterTestingModule.withRoutes([{path: 'simple', component: SimpleCmp}])],
declarations: [ComponentWithRouterLink, SimpleCmp]
});
const router: Router = TestBed.inject(Router);
const fixture = createRoot(router, ComponentWithRouterLink);
router.navigateByUrl('/simple');
advance(fixture);
fixture.componentInstance.addLink();
fixture.detectChanges();
fixture.componentInstance.removeLink();
advance(fixture);
advance(fixture);
expect(fixture.nativeElement.innerHTML).toContain('isActive: false');
}));
});
});
function advance<T>(fixture: ComponentFixture<T>): void {
tick();
fixture.detectChanges();
}
function createRoot<T>(router: Router, type: Type<T>): ComponentFixture<T> {
const f = TestBed.createComponent(type);
advance(f);
router.initialNavigation();
advance(f);
return f;
}