add optional created_by record to the doc

test/fixtures/elasticsearch.js

@@ -32,6 +32,7 @@ Client.prototype.get = function (params = {}, source = {}) {
 
   const _source = Object.assign({
     jobtype: 'jobtype',
+    created_by: null,
     payload: {
       id: 'sample-job-1',
       now: 'Mon Apr 25 2016 14:13:04 GMT-0700 (MST)'

test/src/job.js

@@ -14,6 +14,7 @@ const Job = module;
 const maxPriority = 20;
 const minPriority = -20;
 const defaultPriority = 10;
+const defaultCreatedBy = null;
 
 describe('Job Class', function () {
   let client;
@@ -90,6 +91,24 @@ describe('Job Class', function () {
       });
     });
 
+
+    it('should index the created_by value', function () {
+      const createdBy = 'user_identifier';
+      const job = new Job(client, index, type, payload, Object.assign({ created_by: createdBy }, options));
+      return job.ready.then(() => {
+        const newDoc = validateDoc(client.index);
+        expect(newDoc.body).to.have.property('created_by', createdBy);
+      });
+    });
+
+    it('should index default created_by value', function () {
+      const job = new Job(client, index, type, payload, options);
+      return job.ready.then(() => {
+        const newDoc = validateDoc(client.index);
+        expect(newDoc.body).to.have.property('created_by', defaultCreatedBy);
+      });
+    });
+
     it('should index timeout value from options', function () {
       const job = new Job(client, index, type, payload, options);
       return job.ready.then(() => {