public function testRawFields()
 {
     $user = new UserModel();
     $this->assertFalse($user->hasChanged('lastName'));
     $user->importData($this->_data);
     $this->assertTrue($user->hasChanged('lastName'));
     $user = new UserModel($this->_data);
     $this->assertFalse($user->hasChanged('lastName'));
     $user->setLastName('meloinvento');
     $this->assertTrue($user->hasChanged('lastName'));
 }