public function testAddHints()
{
$query = $this->getQuery();
$query->setHint(Query::HINT_CUSTOM_TREE_WALKERS, ['another_walker_class']);
$this->queryHintResolver->addHints($query, ['HINT_REFRESH', ['name' => Query::HINT_CUSTOM_TREE_WALKERS, 'value' => 'walker_class']]);
$this->assertEquals([Query::HINT_CUSTOM_TREE_WALKERS => ['another_walker_class', 'walker_class'], Query::HINT_REFRESH => true], $query->getHints());
}
