public function testDeleteTree()
 {
     $this->initTreeWithScope();
     Table10Peer::deleteTree(1);
     $expected = array('t8' => array(1, 6, 0), 't9' => array(2, 3, 1), 't10' => array(4, 5, 1));
     $this->assertEquals($this->dumpTreeWithScope(2), $expected, 'deleteTree() does not delete anything out of the scope');
 }