Sinon js extensions

gistfile1.js

// regular jasmine api
this.server.respondWith("GET", "/some/article/comments.json", [
  200, {
    "Content-Type": "application/json"
  }, '[{ "id": 12, "comment": "Hey there" }]'
]);

// extension api
this.server.on("GET", "/some/article/comments.json").respond(200, {
  id: 121,
  comment: "Hey there"
sinon.fakeServer.on = function(method, url) {
  return new sinon.fakeServer.requestSpecification(this, method, url);
};

// Implementation
var getResponse;
sinon.fakeServer.requestsForUrl = function(url) {
  var results;
  results = [];
  $.each(this.requests, function(index, request) {
    if (request.url === url) {
      return results.push(request);
    }
  });
  return results;
};
getResponse = function(response) {
  if (response == null) {
    return "";
  }
  return JSON.stringify(response);
};
sinon.fakeServer.requestSpecification = function(server, method, url) {
  this.server = server;
  this.method = method;
  this.url = url;
  return this.respond = function(statusCode, response) {
    this.server.respondWith(this.method, this.url, [
      statusCode, {
        "Content-Type": "application/json"
      }, getResponse(response)
    ]);
    return this;
  };
};

// jasmine matcher
beforeEach(function() {
  return this.addMatchers({
    toHaveReceivedRequestFor: function(url) {
      return this.actual.requestsForUrl(url).length > 0;
    }
  });
});