完整源代码：
import { Component, NgZone } from '@angular/core';
import { TestBed } from '@angular/core/testing';
import { Router } from '@angular/router';
import { RouterTestingModule } from '@angular/router/testing';
import { RoutingParamsService } from './routing-params.service';
@Component({
selector: 'cx-mock',
template: '',
})
export class MockComponent {}
describe('RoutingParamsService', () => {
let service: RoutingParamsService;
let router;
let zone: NgZone;
beforeEach(() => {
TestBed.configureTestingModule({
imports: [
RouterTestingModule.withRoutes([
{
path: '',
component: MockComponent,
},
{
path: 'budgets',
component: MockComponent,
children: [
{
path: ':budgetCode',
component: MockComponent,
children: [
{
path: 'children/:childCode',
component: MockComponent,
},
],
},
],
},
]),
],
declarations: [MockComponent],
providers: [RoutingParamsService],
});
service = TestBed.inject(RoutingParamsService);
router = TestBed.inject(Router);
zone = TestBed.inject(NgZone);
});
it('should be created', () => {
expect(service).toBeTruthy();
});
it('should not have any params for /budgets', async () => {
let result;
await zone.run(() => router.navigateByUrl('/budgets'));
service.getParams().subscribe((params) => (result = params));
expect(result).toEqual({});
});
it('should have param for /budgets/1234', async () => {
let result;
await zone.run(() => router.navigateByUrl('/budgets/1234'));
service.getParams().subscribe((params) => (result = params));
expect(result).toEqual({ budgetCode: '1234' });
});
it('should have params for /budgets/1234/children/5678', async () => {
let result;
await zone.run(() => router.navigateByUrl('/budgets/1234/children/5678'));
service.getParams().subscribe((params) => (result = params));
expect(result.budgetCode).toEqual('1234');
expect(result.childCode).toEqual('5678');
});
it('should share child params', async () => {
let result1;
let result2;
await zone.run(() => router.navigateByUrl('/budgets/1234'));
service.getParams().subscribe((params) => (result1 = params));
expect(result1.budgetCode).toEqual('1234');
await zone.run(() => router.navigateByUrl('/budgets/1234/children/5678'));
service.getParams().subscribe((params) => (result2 = params));
expect(result1.budgetCode).toEqual('1234');
expect(result2.childCode).toEqual('5678');
});
it('should clear all params', async () => {
let result;
await zone.run(() => router.navigateByUrl('/budgets/1234'));
await zone.run(() => router.navigateByUrl('/budgets'));
service.getParams().subscribe((params) => (result = params));
expect(result).toEqual({});
});
});
首先用RouterTestingModule.withRoutes构造一个支持Route的module出来，其返回作为输入，传入TestBed.configureTestingModule的imports数组里：
