yadda/examples/qunit/bottles-library.js

A true BDD framework for JavaScript

/* jslint node: true */
/* global equal */
'use strict';

var Dictionary = require('yadda').Dictionary;
var English = require('yadda').localisation.English;

var wall;
var dictionary = new Dictionary().define('NUM', /(\d+)/);
var library = English.library(dictionary)

  .given('$NUM green bottles are standing on the wall', function (number_of_bottles) {
    wall = new Wall(number_of_bottles);
  })

  .when('$NUM green bottle accidentally falls', function (number_of_falling_bottles) {
    wall.fall(number_of_falling_bottles);
  })

  .then('there (?:are|are still) $NUM green bottles standing on the wall', function (number_of_bottles) {
    equal(number_of_bottles, wall.bottles);
  });

var Wall = function (bottles) {
  this.bottles = bottles;
  this.fall = function (n) {
    this.bottles -= n;
  };
  this.returned = function () {
    this.bottles++;
  };
};