* implemented a (somewhat hacky) solution to provide persistent transactions on …

…memory resident sqlite databases

lib/dialects/sqlite/connection-manager.js

@@ -23,16 +23,17 @@ ConnectionManager.prototype.getConnection = function(options) {
   var self = this;
   options = options || {};
   options.uuid = options.uuid || 'default';
+	options.inMemory = ((self.sequelize.options.storage || ':memory:') == ':memory:')?1:0;
 
-  if (self.connections[options.uuid]) return Promise.resolve(self.connections[options.uuid]);
+  if (self.connections[options.inMemory||options.uuid]) return Promise.resolve(self.connections[options.inMemory||options.uuid]);
 
   return new Promise(function (resolve, reject) {
-    self.connections[options.uuid] = new self.lib.Database(self.sequelize.options.storage || ':memory:', function(err) {
+    self.connections[options.inMemory||options.uuid] = new self.lib.Database(self.sequelize.options.storage || ':memory:', function(err) {
       if (err) {
         if (err.code === 'SQLITE_CANTOPEN') return reject('Failed to find SQL server. Please double check your settings.');
         return reject(err);
       }
-      resolve(self.connections[options.uuid]);
+      resolve(self.connections[options.inMemory||options.uuid]);
     });
   }).tap(function (connection) {
     if (self.sequelize.options.foreignKeys !== false) {

lib/sequelize.js

@@ -591,7 +591,7 @@ module.exports = (function() {
     ).then(function (connection) {
       var query = new self.dialect.Query(connection, self, callee, options);
       return query.run(sql).finally(function() {
-        if (options.transaction) return;
+        if (options.transaction || connection.filename == ":memory:") return;
         return self.connectionManager.releaseConnection(connection);
       });
     });