public function testAdder()
{
$e = new ComplexColumnTypeEntity2();
$e->addTag('foo');
$this->assertEquals(array('foo'), $e->getTags());
$e->addTag(1234);
$this->assertEquals(array('foo', 1234), $e->getTags());
$e->addTag('foo');
$this->assertEquals(array('foo', 1234, 'foo'), $e->getTags());
$e->setTags(array(12, 34));
$e->addTag('foo');
$this->assertEquals(array(12, 34, 'foo'), $e->getTags());
}