angular-cn/modules/@angular/router/test/router.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 {Location} from '@angular/common';
import {TestBed, inject} from '@angular/core/testing';
import {ResolveData} from '../src/config';
import {PreActivation, Router} from '../src/router';
import {RouterOutletMap} from '../src/router_outlet_map';
import {ActivatedRouteSnapshot, RouterStateSnapshot, createEmptyStateSnapshot} from '../src/router_state';
import {DefaultUrlSerializer} from '../src/url_tree';
import {TreeNode} from '../src/utils/tree';
import {RouterTestingModule} from '../testing/router_testing_module';
describe('Router', () => {
describe('resetRootComponentType', () => {
class NewRootComponent {}
beforeEach(() => { TestBed.configureTestingModule({imports: [RouterTestingModule]}); });
it('should not change root route when updating the root component', () => {
const r: Router = TestBed.get(Router);
const root = r.routerState.root;
r.resetRootComponentType(NewRootComponent);
expect(r.routerState.root).toBe(root);
});
});
describe('setUpLocationChangeListener', () => {
beforeEach(() => { TestBed.configureTestingModule({imports: [RouterTestingModule]}); });
it('should be indempotent', inject([Router, Location], (r: Router, location: Location) => {
r.setUpLocationChangeListener();
const a = (<any>r).locationSubscription;
r.setUpLocationChangeListener();
const b = (<any>r).locationSubscription;
expect(a).toBe(b);
r.dispose();
r.setUpLocationChangeListener();
const c = (<any>r).locationSubscription;
expect(c).not.toBe(b);
}));
});
describe('PreActivation', () => {
const serializer = new DefaultUrlSerializer();
const inj = {get: (token: any) => () => `${token}_value`};
let empty: RouterStateSnapshot;
beforeEach(() => { empty = createEmptyStateSnapshot(serializer.parse('/'), null); });
it('should resolve data', () => {
const r = {data: 'resolver'};
const n = createActivatedRouteSnapshot('a', {resolve: r});
const s = new RouterStateSnapshot('url', new TreeNode(empty.root, [new TreeNode(n, [])]));
checkResolveData(s, empty, inj, () => {
expect(s.root.firstChild.data).toEqual({data: 'resolver_value'});
});
});
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it('should wait for the parent resolve to complete', () => {
const parentResolve = {data: 'resolver'};
const childResolve = {};
const parent = createActivatedRouteSnapshot(null, {resolve: parentResolve});
const child = createActivatedRouteSnapshot('b', {resolve: childResolve});
const s = new RouterStateSnapshot(
'url', new TreeNode(empty.root, [new TreeNode(parent, [new TreeNode(child, [])])]));
const inj = {get: (token: any) => () => Promise.resolve(`${token}_value`)};
checkResolveData(s, empty, inj, () => {
expect(s.root.firstChild.firstChild.data).toEqual({data: 'resolver_value'});
});
});
it('should copy over data when creating a snapshot', () => {
const r1 = {data: 'resolver1'};
const r2 = {data: 'resolver2'};
const n1 = createActivatedRouteSnapshot('a', {resolve: r1});
const s1 = new RouterStateSnapshot('url', new TreeNode(empty.root, [new TreeNode(n1, [])]));
checkResolveData(s1, empty, inj, () => {});
const n21 = createActivatedRouteSnapshot('a', {resolve: r1});
const n22 = createActivatedRouteSnapshot('b', {resolve: r2});
const s2 = new RouterStateSnapshot(
'url', new TreeNode(empty.root, [new TreeNode(n21, [new TreeNode(n22, [])])]));
checkResolveData(s2, s1, inj, () => {
expect(s2.root.firstChild.data).toEqual({data: 'resolver1_value'});
expect(s2.root.firstChild.firstChild.data).toEqual({data: 'resolver2_value'});
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});
});
});
});
function checkResolveData(
future: RouterStateSnapshot, curr: RouterStateSnapshot, injector: any, check: any): void {
const p = new PreActivation(future, curr, injector);
p.traverse(new RouterOutletMap());
p.resolveData().subscribe(check, (e) => { throw e; });
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}
function createActivatedRouteSnapshot(cmp: string, extra: any = {}): ActivatedRouteSnapshot {
return new ActivatedRouteSnapshot(
<any>[], {}, <any>null, <any>null, <any>null, <any>null, <any>cmp, <any>null, <any>null, -1,
extra.resolve);
}