added unit test for setting replication credentials

mobile/noarch/example/013_replication.js

@@ -165,4 +165,31 @@ module.exports = function() {
       repl.start();
     });
   });
+
+  describe('pull replication with auth credentials', function() {
+    var conf, repl;
+
+    before(function(done) {
+      utils.delete_nonsystem_databases(manager);
+      conf = utils.verify_couchdb_server('replication_config.json', done);
+    });
+
+    // currently returning a 400 error due to a request for /elements/_session
+    it.skip('must replicate with credentials', function(done) {
+      this.timeout(10000);
+      var db = manager.getDatabase('repl3');
+      repl = db.createPullReplication('http://'+conf.host+':'+conf.port+'/'+conf.dbname);
+      repl.setCredential({ user: 'scott', pass: 'tiger' });
+      repl.addEventListener('status', function(e) {
+        if (e.status == titouchdb.REPLICATION_MODE_STOPPED) {
+          should.not.exist(repl.lastError);
+          db.documentCount.should.eql(118);
+          repl.isRunning.should.eql(false);
+          done();
+        }
+      });
+      repl.start();
+    });
+  });
+
 };