public function testAddChild()
{
Table9Peer::doDeleteAll();
$t1 = new Table9();
$t1->setTitle('t1');
$t1->makeRoot();
$t1->save();
$t2 = new Table9();
$t2->setTitle('t2');
$t1->addChild($t2);
$t2->save();
$t3 = new Table9();
$t3->setTitle('t3');
$t1->addChild($t3);
$t3->save();
$t4 = new Table9();
$t4->setTitle('t4');
$t2->addChild($t4);
$t4->save();
$expected = array('t1' => array(1, 8, 0), 't2' => array(4, 7, 1), 't3' => array(2, 3, 1), 't4' => array(5, 6, 2));
$this->assertEquals($expected, $this->dumpTree(), 'addChild() adds the child and saves it');
}
