Question

我在库上使用以下函数，然后像这样调用它们。代码的问题是我无法从以下代码返回值：

如果有人建议将价值返回给我的测试，那会很棒。（一旦解决，我将发布完整的工作代码）。我没有使用过承诺，所以如果有人可以提出一个很棒的解决方案！

解决了这个!!!检查我的回答：

我的测试用例

iit("Should Find the OrderID and update task and submit", function () {    
    var job_id_data= lib.getTestData('MYPROJ_TESTCASE_001'); //Problem area     
    console.log(job_id_data);
    element(by.xpath('//input[@type=\'search\']')).sendKeys(job_id_data);
   //Do other stuff
}

我的函数（lib）中的下面代码需要返回一个promise，我不知道该怎么做：（

    csvConverter.on("end_parsed",function(jsonObj){
     //console.log(jsonObj); //here is your result json object      
     var foundTestData = getObjects(jsonObj, 'TC', jobreference);
     console.log(returnKeyValue ); //I can see this value                    
     returnKeyValue = getValues(foundTestData, 'JOBID');   // I cannot return this??
});

完全无效代码...代码

   var lib = require('./lib/library.js');
   iit("should go to logout page", function () {    
    var id_data= lib.getTestData('Test.3'); 
    //plan to use this value in my tests
   });

   //Library
   function getTestData(jobreference) {
    //Converter Class 
    var Converter=require("csvtojson").core.Converter;
    var fs=require("fs"); 
    var csvFileName="C:\\TestData.csv"; 

    var fileStream=fs.createReadStream(csvFileName);
    //new converter instance 
    var param={};
    var csvConverter=new Converter(param);  
    var returnKeyValue="";  
    var result = {};    

    //This requires a code change: 
csvConverter.on("end_parsed",function(jsonObj){
     //console.log(jsonObj); //here is your result json object      
     var foundTestData = getObjects(jsonObj, 'TC', jobreference);
     console.log(returnKeyValue ); //I can see this value                    
     returnKeyValue = getValues(foundTestData, 'JOBID');   // I cannot return this??
});

//read from file 
fileStream.pipe(csvConverter);  
return returnKeyValue;
    }

   function getValues(obj, key) {
   var objects = [];
   for (var i in obj) {
    if (!obj.hasOwnProperty(i)) continue;
    if (typeof obj[i] == 'object') {
        objects = objects.concat(getValues(obj[i], key));
    } else if (i == key) {
        objects.push(obj[i]);
    }
}
return objects;
   }

   function getObjects(obj, key, val) {
var objects = [];
for (var i in obj) {
    if (!obj.hasOwnProperty(i)) continue;
    if (typeof obj[i] == 'object') {
        objects = objects.concat(getObjects(obj[i], key, val));    
    } else 
    //if key matches and value matches or if key matches and value is not passed (eliminating the case where key matches but passed value does not)
    if (i == key && obj[i] == val || i == key && val == '') { //
        objects.push(obj);
    } else if (obj[i] == val && key == ''){
        //only add if the object is not already in the array
        if (objects.lastIndexOf(obj) == -1){
            objects.push(obj);
        }
    }
}
return objects;
   }

Answer 1

在我的同事的帮助下管理解决这个问题:)（谢谢:)）

这篇文章帮助我快速达到目的

http://know.cujojs.com/tutorials/promises/creating-promises

解决方案是我将函数更新为以下内容，它基本上适用于Protractor Promises。哪个好。

function getTestData(jobreference) {
var Converter=require("csvtojson").core.Converter;
var fs=require("fs"); 
var csvFileName="TESTJOB.csv";      
var fileStream=fs.createReadStream(csvFileName);
var csvConverter=new Converter(param);  

//new converter instance 
var param={};
var csvConverter=new Converter(param);  
var d = protractor.promise.defer();
csvConverter.on("end_parsed",function(jsonObj){
     var foundTestData = getObjects(jsonObj, 'TCaseID', jobreference);                   
     returnKeyValue = getValues(foundTestData, 'ID');
     console.log(returnKeyValue.toString());
     d.fulfill(returnKeyValue.toString());       
});     
//d.reject("fail!!!!"); 
fileStream.pipe(csvConverter);          
return d.promise;   
}

量角器将CSV文件转换为Json并读取键值

1 个答案: