public function testChildPageAccessors()
{
$slug = new Slug();
$slug->setUrl('/root');
$page = new Page();
$page->setCurrentSlug($slug);
$this->assertEmpty($page->getChildPages()->toArray());
$firstSlug = new Slug();
$firstSlug->setUrl('/first');
$firstPage = new Page();
$firstPage->setLevel(1);
$firstPage->setCurrentSlug($firstSlug);
$secondSlug = new Slug();
$secondSlug->setUrl('/second');
$secondPage = new Page();
$secondPage->setLevel(2);
$secondPage->setCurrentSlug($secondSlug);
$page->addChildPage($firstPage)->addChildPage($secondPage)->addChildPage($secondPage);
$this->assertEquals([$firstPage, $secondPage], array_values($page->getChildPages()->toArray()));
$this->assertEquals('/root/first', $firstPage->getCurrentSlugUrl());
$this->assertEquals('/root/second', $secondPage->getCurrentSlugUrl());
$page->removeChildPage($firstPage)->removeChildPage($firstPage);
$this->assertEquals([$secondPage], array_values($page->getChildPages()->toArray()));
$this->assertEquals('/first', $firstPage->getCurrentSlugUrl());
$this->assertEquals('/root/second', $secondPage->getCurrentSlugUrl());
}
