/**
* @expectedException UnexpectedValueException
*/
public function testFailCycle()
{
$graph = new Graph();
$graph->createVertex(1)->createEdgeTo($graph->createVertex(2));
$graph->getVertex(2)->createEdgeTo($graph->getVertex(1));
$alg = new TopologicalSort($graph);
$alg->getVertices();
}
/**
* Performs a topological sort
*
* @return \Fhaculty\Graph\Set\Vertices
*/
public function topologicalSort()
{
$sort = new TopologicalSort($this->graph);
return $sort->getVertices();
}
