Url shortner

before_and_after_each.js

    beforeEach(function () {
      this.callback = sinon.spy();
      
      // Stubbing the ajax method
      sinon.stub($, 'ajax', function (options) {
        // Creating a deffered object 
        var dfd = $.Deferred();

        // assigns success callback to done.
        if(options.success) dfd.done(options.success({status_code: 200, data: {url: "bit.ly/aaaa"}}));

        // assigns error callback to fail.
        if(options.error) dfd.fail(options.error);
        dfd.success = dfd.done;
        dfd.error = dfd.fail;

        // returning the deferred object so that we can chain it.
        return dfd;
      });
 
    });
 
    afterEach(function () {
      $.ajax.restore();
    });

export.js

(function(exports, $){
  exports.shorten = Url.shorten;
 
}(typeof exports === 'undefined'? this['mymodule']={}: exports, $));

require_for_test.js

var assert = require('assert'),
  sinon = require('sinon'),
  $ = require('jquery'),
  url = require('url');

require_jquery.js

if(typeof(exports) !== "undefined"){
  var $ = require('jquery');
}

tests.js

it("return false when url is not passed", function () {
  assert.equal(false,url.shorten(""));
  assert.equal(false,url.shorten());
  assert.equal(false,url.shorten(null));
});

it("call the ajax once", function (done) {
  // This will execute the method assigned to Deferred.done
  url.shorten("http://google.com", this.callback).resolve();
  
  // sinon will check whether the ajax method is called Once 
  assert($.ajax.calledOnce);
  done();
});

it("yeild success", function (done) {
  url.shorten("http://google.com", this.callback).resolve();

  // sinon will check whether the success method is called Once
  assert(this.callback.withArgs(0,"bit.ly/aaaa").calledOnce);
  done();
});

it("yields error", function (done) {
  // This will execute the method assigned to Deferred.fail
  url.shorten("http://google.com", this.callback).reject();

  // sinon will check whether the error method is called Once
  assert(this.callback.withArgs(-1, "ajaxFailed").calledOnce);
  done();
});

url.js

var Url = {
  shorten: function (url,callback) {
    if(["",null,undefined].indexOf(url) >= 0) return false;
    var api_url = "http://api.bit.ly/v3/shorten";
    var params = {
      format: 'json',
      longUrl: url,
      login: 'revathskumar',
      apiKey: ''
    };
 
    return $.ajax({
      type: 'GET',
      url: api_url ,
      data: params,
      dataType: 'json',
      success: function(data, status_param) {
        var status = data.status_code;
        console.log(status);
        if(status == 200) {
          callback(status, data.data.url);
        } else {
          callback(status, data.status_txt);
        }
      },
      error: function (request, status, error) {
        callback(-1, "ajaxFailed");
      }
    });
  }
};

url_shorter.js

if(typeof(exports) !== "undefined"){
  var $ = require('jquery');
}

var Url = {
  shorten: function (url,callback) {
    if(["",null,undefined].indexOf(url) >= 0) return false;
    var api_url = "http://api.bit.ly/v3/shorten";
    var params = {
      format: 'json',
      longUrl: url,
      login: 'revathskumar',
      apiKey: ''
    };

    return $.ajax({
      type: 'GET',
      url: api_url ,
      data: params,
      dataType: 'json',
      success: function(data, status_param) {
        var status = data.status_code;
        console.log(status);
        if(status == 200) {
          callback(status, data.data.url);
        } else {
          console.log(status);
          callback(status, data.status_txt);
        }
      },
      error: function (request, status, error) {
        callback(-1, "ajaxFailed");
      }
    });
  }
};


(function(exports, $){
  exports.shorten = Url.shorten;

}(typeof exports === 'undefined'? this['mymodule']={}: exports, $));

url_shorter_test.js

var assert = require('assert'),
  sinon = require('sinon'),
  $ = require('jquery'),
  url = require('../js/backbone/lib/url');

describe('Url', function(){
  describe(".shorten", function(){

    beforeEach(function () {
      this.callback = sinon.spy();
      sinon.stub($, 'ajax', function (options) {
        var dfd = $.Deferred();
        if(options.success) dfd.done(options.success({status_code: 200, data: {url: "bit.ly/aaaa"}}));
        if(options.error) dfd.fail(options.error);
        dfd.success = dfd.done;
        dfd.error = dfd.fail;
        return dfd;
      });

    });

    afterEach(function () {
      $.ajax.restore();
    });

    it("return false when url is not passed", function () {
      assert.equal(false,url.shorten(""));
      assert.equal(false,url.shorten());
      assert.equal(false,url.shorten(null));
    });

    it("call the ajax once", function (done) {
      url.shorten("http://google.com", this.callback).resolve();
      assert($.ajax.calledOnce);
      done();
    });

    it("yeild success", function (done) {
      url.shorten("http://google.com", this.callback).resolve();
      assert(this.callback.withArgs(0,"bit.ly/aaaa").calledOnce);
      done();
    });

    it("yields error", function (done) {
      url.shorten("http://google.com", this.callback).reject();
      assert(this.callback.withArgs(-1, "ajaxFailed").calledOnce);
      done();
    });
  });
});