CODEWITHSUNDEEP
node.js
Konstantin
Konstantin

Reputation: 73

Nodejs file exist

If i try check exist just one file (whom actualy exists), my test passing successfully. But if i try add in asserts non-existing file, both test passed with error

    describe('script entry points', function () {
           entryJs = {
             "app": "./coffee/app",
             "shame": "./coffee/shame"
           };

        for(var pointJs in entryJs) { 
           pathJs = 'web/js'+pointJs+'.js';
           it('should return true when '+pathJs+' file exist', function () {
             fs.stat(pathJs, function(err, data) {
               if (err) 
                 console.log('it does not exist');
               else 
                console.log('it exists');
             });
         });
      }
   });

Upvotes: 1

Views: 992

Answers (1)

Molda
Molda

Reputation: 5704

Add console.log(pathJs); just before fs.stat and you'll find out that fs.stat is called twice with same pathJs value.

By the time the fs.stat gets called first time the pathJs variable holds the value assigned to it in last for loop cycle.

The reason is asynchronous nature of node.js. You need to use closure.

Solution:

for(var pointJs in entryJs) { 
    pathJs = 'web/js/'+entryJs[pointJs]+'.js';     

    (function(path){
         it('should return true when '+path+' file exist', function () { 

              fs.stat(path, function(err, data) { 
                   if (err) 
                       console.log('it does not exist');           
                   else 
                        console.log('it exists'); 
               }); 
         });
    })(pathJs);
}

Upvotes: 1

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