public function testRemoval()
{
$category = new Category();
$category->setName('Default category')->setSlug('default')->setEnabled(true);
$child = new Category();
$child->setName('Child category')->setSlug('child')->setEnabled(true)->setParent($category);
$category->addChild($child);
$kernel = static::getKernel();
/** @var EntityManager $em */
$em = $kernel->getContainer()->get('doctrine')->getManager();
$em->persist($category);
$em->persist($child);
$em->flush();
$category = $em->getRepository(get_class($category))->find($category->getId());
$children = $category->getChildren();
$first = $children[0];
$this->assertEquals($child->getId(), $first->getId());
$category->removeChild($child);
$child->setParent(null);
$em->remove($category);
$em->flush();
$child = $em->getRepository(get_class($child))->find($child->getId());
$this->assertNull($child->getParent());
}
