/**
* Returns first node name if nodes is not empty
*
* @param GroupNodeDefinition $node
*
* @return null|string
*/
public static function getFirstNodeName(GroupNodeDefinition $node)
{
if (!$node->isEmpty()) {
$firstNode = $node->first();
return $firstNode->getName();
}
return null;
}
public function testFirst()
{
// empty node
$node = new GroupNodeDefinition(self::TEST_NAME);
$this->assertFalse($node->first());
// not empty node
$node = self::getTestGroup();
$this->assertEquals('node1', $node->first()->getName());
}
