test sqlite specific specs also via file storage

spec/sqlite/model-factory.spec.js

 var config    = require("../config/config")
 var config    = require("../config/config")
   , Sequelize = require("../../index")
   , Sequelize = require("../../index")
-  , sequelize = new Sequelize(config.database, config.username, config.password, { logging: false, dialect: 'sqlite' })
-  , Helpers   = new (require("../config/helpers"))(sequelize)
+  , dbFile    = __dirname + '/test.sqlite'
+  , storages  = [':memory:', dbFile]
 
 
 describe('ModelFactory', function() {
 describe('ModelFactory', function() {
+  storages.forEach(function(storage) {
+    describe('with storage "' + storage + '"', function() {
       var User      = null
       var User      = null
+        , sequelize = null
+        , Helpers   = null
 
 
       beforeEach(function() {
       beforeEach(function() {
+        sequelize = new Sequelize(config.database, config.username, config.password, {
+          logging: false,
+          dialect: 'sqlite',
+          storage: storage
+        })
+
+        Helpers = new (require("../config/helpers"))(sequelize)
+
         User = sequelize.define('User', {
         User = sequelize.define('User', {
           age: Sequelize.INTEGER,
           age: Sequelize.INTEGER,
           name: Sequelize.STRING,
           name: Sequelize.STRING,
@@ -14,8 +26,14 @@ describe('ModelFactory', function() {
         })
         })
         Helpers.sync()
         Helpers.sync()
       })
       })
+
       afterEach(function() {
       afterEach(function() {
         Helpers.dropAllTables()
         Helpers.dropAllTables()
+        if(storage == dbFile) {
+          Helpers.async(function(done) {
+            require("fs").unlink(__dirname + '/test.sqlite', done)
+          })
+        }
       })
       })
 
 
       describe('create', function() {
       describe('create', function() {
@@ -132,4 +150,6 @@ describe('ModelFactory', function() {
           })
           })
         })
         })
       })
       })
+    })
+  })
 })
 })