Use new topology engine

Author: tomgreenfield

lib/dml/mongoose/index.js

@@ -70,9 +70,11 @@ MongooseDB.prototype.connect = function(db) {
   dbPass = configuration.getConfig('dbPass');
   dbReplicaset = configuration.getConfig('dbReplicaset');
   dbConnectionUri = configuration.getConfig('dbConnectionUri');
-  options = configuration.getConfig('dbOptions') || {};
-  options.domainsEnabled = true;
-  options.useNewUrlParser = true;
+  options = { ...configuration.getConfig('dbOptions'), ...{
+    domainsEnabled: true,
+    useNewUrlParser: true,
+    useUnifiedTopology: true
+  }};
 
   // Construct the authentication part of the connection string.
   authenticationString = dbUser && dbPass ? dbUser + ':' + dbPass + '@' : '';

test/entry.js

@@ -112,7 +112,8 @@ function removeTestData(done) {
       var connStr = 'mongodb://' + testConfig.dbHost + ':' + testConfig.dbPort + '/' + testConfig.dbName;
       MongoClient.connect(connStr, {
         domainsEnabled: true,
-        useNewUrlParser: true
+        useNewUrlParser: true,
+        useUnifiedTopology: true
       }, function(error, client) {
         if(error) return cb(error);