使用 Jasmine 测试 Web 套接字

问题描述

这是一些使用 stomp 协议为 web-socket 编写的代码.

Here is some code that has been written for web-socket using stomp protocol.

function WS(url) {
    var ws = new SockJS('/notifications');

    this.client = Stomp.over(ws),

    this.client.connect('', '', function() {
        console.log('Connected');
    }, function(error) {
        console.log('STOMP protocol error: ', error.headers.message);
    });
}

WS.prototype.disconnect = function() {
};

WS.prototype.subscribe = function() {
};

WS.prototype.unSubscribe = function() {
};

WS.prototype.send = function(msg) {
};

我找到了这篇文章，但它需要实际连接到服务器，单元测试Node.js和WebSockets (Socket.io)

I found this post but it requires actual connection to server, Unit testing Node.js and WebSockets (Socket.io)

我们如何使用 Jasmine 进行测试.寻找一种伪造网络套接字服务器和触发事件(连接、断开连接等)的方法.我将不胜感激任何示例或有用的链接.

How do we test this using Jasmine. Looking for a way to fake web-socket server and fire events (connect, disconnect etc). I'll appreciate any example or useful link.

推荐答案

只需模拟函数的所有依赖项，因此在您的情况下，这将是 SockJS 和 Stomp.over.

var wsSpy = jasmine.createSpy();
spyOn(window, 'SockJs').andReturn(wsSpy);

var clientSpy = jasmine.createSpy();
spyOne(Stomp, 'over').andReturn(clientSpy)

var successCallBack = clientSpy.mostRecentCall.args[2];
successCallBack();

var errorCallBack = clientSpy.mostRecentCall.args[3];
errorCallBack();