MLE-21403 : Fix Polaris medium issues for Node Client

Author: anu3990

lib/documents.js

@@ -564,7 +564,9 @@ function singleReadOutputTransform(headers, data) {
   var document = (categories.length === 1 && categories[0] === 'content') ?
       {content: content} : collectMetadata(content);
 
-  document.uri      = operation.uris[0];
+  if(operation.uris){
+    document.uri      = operation.uris[0];
+  }
   document.category = categories;
 
   var format = headers.format;

test-basic/data/echoModule.js

@@ -48,6 +48,5 @@ case  10:
   xdmp.arrayValues([1, 'two', {i:3}, [4,'four'], xdmp.unquote('<i>5</i>')]);
   break;
 default:
-  extra;
   break;
 }

test-complete/nodejs-graphs-read-write-stream.js

@@ -47,11 +47,10 @@ describe('stream graph test', function () {
         this.timeout(10000);
         db.graphs.read(graphUri, 'text/n3').stream('chunked').
             on('data', function (data) {
-                //console.log(data.toString());
+                (!valcheck.isNullOrUndefined(data)).should.equal(true);
                 var strData = data.toString();
                 strData.should.containEql('p0:person1      a               p0:Person ;');
                 strData.should.containEql('                foaf:knows      p0:person2 ;');
-                (!valcheck.isNullOrUndefined(data)).should.equal(true);
             }).
             on('end', function () {
                 done();