cucumber.js, a more functional example (stepdefinition.js)

gistfile1.txt

var Q = require('q');
var _ = require('lodash');

var myStepDefinitionsWrapper = function() {
  this.World = require("../support/world.js").World; // overwrite default World constructor

  this.Given(/^there are (\d+) events$/, function(count, callback) {
    var self = this;

    var arr = _.times(count, function(i) {
      return createEvent.call(self, i);
    })

    Q.all(arr).then(function(arr) {
      callback()
    }).done();
  });

  var createEvent = function(identifier) {
    return this.post('/events', { name : "event " + identifier, description : "cool event", price : { currency : "EUR", amount : 10000}, tickets : 200, status : "OPEN"});
  };

  this.When(/^I create a new event$/, function(callback) {
    createEvent.call(this, "new event").then(function(_) {
      callback()
    });
  });

  this.Then(/^there will be (\d+) event[s]?$/, function(count, callback) {
    this.get('/events').then(
      function(response) {
        if (count == response.total_rows) {
          callback()
        } else {
          callback.fail()
        }

      }).done();
  });

  // etc...

}

module.exports = myStepDefinitionsWrapper;