Mocha setup

gistfile1.js

(function (global) {
  var sandbox,
      sinon = require('sinon');

  global.should = require('chai').should();
  global.expect = require('chai').expect;
  require('sinon-mocha').enhance(sinon);
  require('chai').use(require('sinon-chai'));

  setGlobals();

  beforeEach(function() {
    sandbox = sinon.sandbox.create();
    global.mock = wrap(sandbox, 'mock');
    global.stub = wrap(sandbox, 'stub');

    Object.prototype.receives = function (name) {
      return sandbox.mock(this).expects(name);
    };
  });

  afterEach(function() {
    sandbox.restore();
    setGlobals();
  });

  function setGlobals () {
    global.mock = sinon.mock;
    global.stub = sinon.stub;

    delete Object.prototype.receives;
  }

  function wrap(sandbox, method) {
    return function (object, name) {
      return sandbox[method](object, name);
    };
  }
})(global);