mock sync function

src/instance.js

@@ -319,4 +319,15 @@ fakeModelInstance.prototype.toJSON = fakeModelInstance.prototype.toJson = functi
 	return this.get();
 };
 
+/**
+ * This has no effect on the Instance
+ * 
+ * @instance
+ * @return {Promise<Instance>} will always resolve with the current instance
+ **/
+fakeModelInstance.prototype.sync = function () {
+	return bluebird.resolve(this);
+};
+
+
 module.exports = fakeModelInstance;

src/sequelize.js

@@ -410,4 +410,15 @@ Sequelize.prototype.authenticate = function() {
 	});
 };
 
+/**
+ * Always returns a resolved promise
+ *
+ * @return {Promise} will always resolve as a successful sync
+ */
+Sequelize.prototype.sync = function() {
+	return new bluebird(function (resolve) {
+		return resolve();
+	});
+};
+
 module.exports = Sequelize;