test for multiple called back is added.

test/tools/testAll.sh

@@ -11,6 +11,7 @@ mocha test/unit/testFilter.js
 mocha test/unit/testError.js
 mocha test/unit/testCalledback.js
 mocha test/unit/testCalledback_more.js
+mocha test/unit/testCalledback_multiCallback.js
 mocha test/unit/testDownload.js
 mocha test/unit/testDownload_2.js
 mocha test/unit/testExecutionPlan.js

test/unit/testCalledback_multiCallback.js

@@ -0,0 +1,54 @@
+'use strict';
+
+var jf = require('../../'),
+    expect    = require('chai').expect,
+    fs = require('fs'),
+    path = require('path');
+
+let testPath = './' + Math.random() + '.json';
+let testPath2 = './' + Math.random() + '.json';
+let testPath3 = './' + Math.random() + '.json';
+var testValue = { msg: Math.random().toString() };
+var new_testValue = { msg: Math.random().toString() };
+
+describe('called back function ', function () {
+  it('can be called multiple times with new file path', function (done) {
+
+    var count = 0;
+    jf.filed( testPath )
+    .io(
+      function( obj, filePath) {
+        return testValue;
+      }
+    ).calledback(
+      function(obj, filePath, callback){
+        setTimeout(
+          function(){
+            console.log("called back user process")
+            callback( new_testValue, testPath );
+            callback( new_testValue, testPath2 );
+            callback( new_testValue, testPath3 );
+          },
+          10);
+      }
+    ).pass(
+      function(obj, filePath){
+        expect( path.resolve( testPath ) ==  filePath ||
+                path.resolve( testPath2 ) == filePath ||
+                path.resolve( testPath3 ) == filePath ).to.eql(true);
+        expect(obj).to.eql(new_testValue);
+
+        count ++;
+        if( count == 3 ) done();
+
+      }
+    ).exec();
+
+  });
+
+  setTimeout(
+    function(){
+    },
+    20);
+
+});