我正在尝试对具有 socket.io 的服务进行单元测试使用 mock-socket 导入。我查看了类似的问题，例如 this一个，我无法让它与以下一起工作。
import { TestBed, inject, async } from '@angular/core/testing';
import { SocketIO, Server } from 'mock-socket';
import { BackendService } from './backend.service';
describe('BackendService', () => {
/* setup for mock-socket in order to test socket.io */
const SERVER_URL = window.location.host;
const mockServer = new Server(SERVER_URL);
// setting up server mock
mockServer.on('connection', socket => {
mockServer.emit('server-message', 'test message 1');
});
beforeEach(() => {
TestBed.configureTestingModule({
imports: [ ],
providers: [ BackendService ]
});
jasmine.DEFAULT_TIMEOUT_INTERVAL = 30000;
});
it('tests simple connection and messaging works with mock-socket setup', async(inject([BackendService], (service: BackendService) => {
(window as any).io = SocketIO;
// setting up client
service.socket = io(window.location.host);
setTimeout(() => {
service.socket.on('connect', (message) => {
expect(message).toEqual('test message 1');
mockServer.stop();
});
}, 100);
})));
});
有人遇到过这个问题吗？
我创建了一个 Stackblitz重新创建场景(如果它能让事情更容易理解)。
最佳答案
我通过更改为以下几行解决了我的问题:
it('tests simple connection and messaging with mock-socket setup', async(done: DoneFn) => {
(window as any).io = SocketIO;
// setting up client
backendService.socket = io(window.location.host);
backendService.socket.on('server-message', (message) => {
console.log(message)
expect(message.message).toEqual('test message 1');
mockServer.stop();
done();
});
});
});
问题本身是由于您需要在asynchronous时通知Jasmine操作完成。
这是一个工作stackblitz查看测试是否有效。
关于angular - 使用 socket.io 模型对 Angular 5 进行单元测试，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51205639/