Fix a test potential async issue

Author: cjbj

test/lobClose.js

@@ -81,7 +81,7 @@ describe('54. lobClose.js', function() {
 
   }); // 54.1
 
-  it.skip('54.2 can not call close() multiple times', function(done) {
+  it('54.2 can not call close() multiple times', function(done) {
 
     conn.createLob(
       oracledb.CLOB,
@@ -92,7 +92,7 @@ describe('54. lobClose.js', function() {
           should.not.exist(err);
 
           lob.close(function(err) {
-            should.exist(err);
+            should.not.exist(err);
             done();
           });
         }); // first close();
@@ -180,10 +180,6 @@ describe('54. lobClose.js', function() {
           );
           cb();
         });
-
-        lob2.on('finish', function() {
-          cb(new Error("LOB emits 'finish' event!"));
-        });
       },
       function(cb) {
         (lob2.chunkSize).should.be.a.Number();