Mock Socket

A javascript mocking library for websockets. This library aims to make testing websocket applications in the bowser or phantomjs as simple as possible.

Installation

bower install mock-socket

Example

function Chat() {
  var chatSocket = new WebSocket('ws://localhost:8080');
  this.messages = [];

  chatSocket.onmessage = event => {
    this.messages.push(event.data);
  };
}

test('basic test', function(){
  assert.expect(1);
  var done = assert.async();

  var mockServer = new MockServer('ws://localhost:8080');
  mockServer.on('connection', function(server) {
    mockServer.send('test message 1');
    mockServer.send('test message 2');
  });

  window.WebSocket = MockWebSocket;
  var chatApp = new Chat(); // Now when Chat tries to do new WebSocket it will create a MockWebSocket object

  setTimeout(function() {
    assert.equal(chatApp.messages.length, 2, '2 test messages where sent from the mock server');
    done();
  }, 100);
});

Building from source

git clone git@github.com:thoov/mock-socket.git
cd mock-socket
npm i
npm run build

Running tests

1) Via PhantomJS 2.0+

Simply run:

npm test

NOTE: that this only works in PhantomJS 2.0+.

2) Via the browser

  npm run browser

Then visit: http://localhost:7357/ in your browser.

3) Manual tests

The point of the manual tests are to compare a MockWebSocket object vs the native WebSocket object. Running the below command brings up a blank webpage that has both a MockWebSocket object and a Native WebSocket object define with debuggers in place so you can quickly start debugging any inconsistencies.

  npm start

Then visit: http://localhost:4200 in your browser.

Feedback / Issues

If you have any feedback, encounter any bugs, or just have a question, please feel free to create a github issue or send me a tweet at @thoov.