/**
* @magentoAppIsolation enabled
* @covers \Magento\Framework\View\Element\AbstractBlock::getChildNames
* @covers \Magento\Framework\View\Element\AbstractBlock::insert
*/
public function testGetChildNames()
{
// Without layout
$this->assertEquals([], $this->_block->getChildNames());
// With layout
$parent = $this->_createBlockWithLayout('parent', 'parent');
$block1 = $this->_createBlockWithLayout('block1');
$block2 = $this->_createBlockWithLayout('block2');
$block3 = $this->_createBlockWithLayout('block3');
$block4 = $this->_createBlockWithLayout('block4');
$parent->insert($block1);
// add one block
$parent->insert($block2, 'block1', false);
// add second to the 1st position
$parent->insert($block3, 'block1', false);
// add third to the 2nd position
$parent->insert($block4, 'block3', true);
// add fourth block to the 3rd position
$this->assertEquals(['block2', 'block3', 'block4', 'block1'], $parent->getChildNames());
}
