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我正在编写一个测试用例,用于在使用Protractor的Angular应用程序的页面中添加商店信息,最初我在计算我已经拥有的商店数量,在测试块完成后,我希望计数增加1,因此我通过以下链接创建promises 如何在Protractor中创建和操作promises？

describe('myApp', function() {
  var items,startCount;

  var testPromise = function(){
    items = element.all(by.repeater('store in storelist'));
    var deferred = protractor.promise.defer();
    items.count().then(function(orgCount){
       startCount = orgCount;
       console.log('Start Count: '+ startCount); //prints correct value e.g, 6
    }, function(error){
       console.log(error);
    });
    return deferred.promise;
  };

it('should accept valid data for adding new store', function() {
   var cNum = null;
   testPromise().then(function(result){
      cNum = result;
      console.log('cNUm value: '+ cNum); //this value doesn't get printed in console
   });
   /* Code for adding test fields in store page */ …