public function threeChildNodesOfTheRootNodeCanBeRetrievedInSameOrder()
{
$rootNode = $this->context->getRootNode();
$node1 = $rootNode->createNode('node1');
$node2 = $rootNode->createNode('node2');
$node3 = $rootNode->createNode('node3');
$this->assertTrue($rootNode->hasChildNodes(), 'child node check before persistAll()');
$childNodes = $rootNode->getChildNodes();
$this->assertSameOrder([$node1, $node2, $node3], $childNodes);
$this->persistenceManager->persistAll();
$this->assertTrue($rootNode->hasChildNodes(), 'child node check after persistAll()');
$childNodes = $rootNode->getChildNodes();
$this->assertSameOrder([$node1, $node2, $node3], $childNodes);
}