tests adjusted

Author: RobinBuschmann

example/app.ts

@@ -10,7 +10,7 @@ import Book from "./models/Book";
 /* tslint:disable:no-console */
 /* tslint:disable:no-unused-new */
 
-new Sequelize({
+const s = new Sequelize({
   validateOnly: true,
   modelPaths: [__dirname + '/models/validation-only']
 });