YUI Test: Good BDD version

gistfile1.js

/**
 * Integration test
 */

(function () {
  
  var YUITest = this.YUITest || require("yuitest");
  
  YUITest.Node.CLI.XUnit();
  
  var Given = {
    
    "I have entered the number": function (number, data) {
      data.calculator.numbers.push(number);
    }
    
  };
  
  var When = {
    
    "I press the button": function (button, data) {
      data.calculator[button]();
    }
    
  };
  
  var Then = {
    
    "I should see the result": function (result, data) {
      YUITest.Assert.areSame(result, data.calculator.result);
    }
    
  };
  
  var featuresTestSuite = new YUITest.TestSuite({
    
    name: "Product: Calculator",
    
    setUp: function (data) {
      
      data.calculator = {};
      
    },
    
    tearDown: function (data) {
      
      delete data.calculator;
      
    }
    
  });
  
  featuresTestSuite.add(new YUITest.TestCase({
  
    name: "Feature: Addition",
    
    init: function (data) {
      
      data.calculator.add = function () {
        
        this.result = this.numbers.reduce(function (previousElement, currentElement, index, enumerable) {
          return previousElement + currentElement;
        }, 0);
        
      };
      
    },
    
    destroy: function (data) {
      
      delete data.calculator.add;
      
    },
    
    setUp: function (data) {
      
        data.calculator.numbers = [];
        data.calculator.result = 0;
      
    },
    
    tearDown: function (data) {
      
      delete data.calculator.numbers;
      delete data.calculator.result;
      
    },
    
    "Scenario: Add two numbers": function (data) {
      
      Given["I have entered the number"](50, data);
      Given["I have entered the number"](70, data);
      When["I press the button"]("add", data);
      Then["I should see the result"](120, data);
      
    },
    
    "Scenario: Add three numbers": function (data) {
      
      Given["I have entered the number"](50, data);
      Given["I have entered the number"](100, data);
      Given["I have entered the number"](70, data);
      When["I press the button"]("add", data);
      Then["I should see the result"](220, data);
      
    }
    
  }));
  
  featuresTestSuite.add(new YUITest.TestCase({
  
    name: "Feature: Multiplication",
    
    init: function (data) {
      
      data.calculator.multiply = function () {
        
        this.result = this.numbers.reduce(function (previousElement, currentElement, index, enumerable) {
          return previousElement * currentElement;
        }, 1);
        
      };
      
    },
    
    destroy: function (data) {
      
      delete data.calculator.add;
      
    },
    
    setUp: function (data) {
      
        data.calculator.numbers = [];
        data.calculator.result = 0;
      
    },
    
    tearDown: function (data) {
      
      delete data.calculator.numbers;
      delete data.calculator.result;
      
    },
    
    "Scenario: Multiply two numbers": function (data) {
      
      Given["I have entered the number"](5, data);
      Given["I have entered the number"](5, data);
      When["I press the button"]("multiply", data);
      Then["I should see the result"](25, data);
      
    },
    
    "Scenario: Multiply three numbers": function (data) {
      
      Given["I have entered the number"](10, data);
      Given["I have entered the number"](7, data);
      Given["I have entered the number"](3, data);
      When["I press the button"]("multiply", data);
      Then["I should see the result"](210, data);
      
    }
    
  }));
  
  YUITest.TestRunner.add(featuresTestSuite);
  
  YUITest.TestRunner.run();
  
})();