Mocha issue #414 example

gistfile1.js

var should = require('should');

function _something(cb) {
  cb();
}

describe('foo', function () {
  describe('bar', function () {
    it('should do something', function (done) {
      var x = {};
      _something(function () {
        x.foo = 'bar';
        done();
      });
      x.foo.should.equal('bar1');
    });
  });
});