/**
* @test
*/
public function testGetConfigTreeBuilder()
{
$config = new Configuration();
/** @var \Symfony\Component\Config\Definition\ArrayNode $node */
$tree = $config->getConfigTreeBuilder()->buildTree();
//check root name
$this->assertEquals('twilio', $tree->getName());
//get child nodes and check them
/** @var \Symfony\Component\Config\Definition\ScalarNode[] $children */
$children = $tree->getChildren();
//check length
$this->assertEquals(4, count($children));
//check if all config values are available
$this->assertArrayHasKey('sid', $children);
$this->assertArrayHasKey('authToken', $children);
$this->assertArrayHasKey('version', $children);
$this->assertArrayHasKey('retryAttempts', $children);
}
