9

我一直在进行一些 mocha/chai 测试，除了在每个“it”测试中放置一个循环并一次又一次地迭代之外，我仍然没有找到一种在许多不同的可能性上运行测试的好方法. 问题是，如果我有数十或数百个测试，我不想一遍又一遍地编写相同的 for 循环。

有没有更优雅的方式来做到这一点？特别是使用不同的测试参数一次循环所有测试的测试？

describe('As a dealer, I determine how many cards have been dealt from the deck based on', function(){

  console.log(this);

  beforeEach(function(){
    var deck = new Deck();
    var myDeck = deck.getCards();
  });


    it('the number of cards are left in the deck', function(){
      for(var i = 1; i<=52; i++){
        myDeck.dealCard();
        expect(myDeck.countDeck()).to.equal(52-i);
      }
    });

    it('the number of cards dealt from the deck', function(){
      expect(myDeck.countDealt()).to.equal(i);
    });

    it('the sum of the cards dealt and the cards left in the deck', function(){
      expect(myDeck.countDeck() + myDeck.countDealt()).to.equal(52)
    });

});
4

1 回答 1

11

我在Loop Mocha 测试中实施了 neezer 的解决方案？，这涉及将整个测试放入一个闭包中并使用循环执行它。

请注意，循环与函数中的 beforeEach() 混淆，因为它每次测试执行 52 次。如果这些元素是动态的，并且每个循环不会多次执行，那么将元素放在 beforeEach() 函数中并不是一个好主意。

代码看起来像这样，它似乎工作。

var myDeck = new Deck(Card);

function _Fn(val){

    describe('As a dealer, I determine how many cards have been dealt from the deck based on', function(){

      myDeck.dealCard();

      var cardCount = 0;
      var dealtCount = 0;

      cardCount = myDeck.countDeck();
      dealtCount = myDeck.countDealt();

      it('the number of cards are left in the deck', function(){
        expect(cardCount).to.equal(52-val);
      });

      it('the number of cards dealt from the deck', function(){
        expect(dealtCount).to.equal(val);
      });

      it('the sum of the cards dealt and the cards left in the deck', function(){
        expect(cardCount + dealtCount).to.equal(52);
      });

    });

}

for(var i = 1; i<=52; i++){
  _Fn(i);
}
于 2014-02-19T20:27:48.020 回答