public void TestMethod3()
    {
        DbEntities db = new DbEntities();

        using (PermissionDataBase permissionDb = new PermissionDataBase(db)) {
            Permission toDelete = permissionDb.Get(3);      //Assuming id=3 exists
            permissionDb.Delete(toDelete);
            Permission deleted = permissionDb.Get(3);
            Assert.IsNull(deleted);
        }
    }