public function testAddNewRootItem()
{
$research = new Research();
$this->assertEquals(null, $research->itemTree);
$aRootItem = $research->getNewItem("A Root Item");
$this->assertEquals(1, $aRootItem->id);
$research->addAsRootItem($aRootItem);
$this->assertEquals(1, $research->itemTree->id);
$aNewRootItem = $research->getNewItem("A New Root Item");
$this->assertEquals(2, $aNewRootItem->id);
$research->addAsRootItem($aNewRootItem);
$this->assertEquals(2, $research->itemTree->id);
$this->assertEquals(1, count($research->itemTree->items));
}