upgrade

vendor/graphp/algorithms/tests/ShortestPath/DijkstraTest.php

@@ -0,0 +1,32 @@
+<?php
+
+use Fhaculty\Graph\Graph;
+use Fhaculty\Graph\Vertex;
+use Graphp\Algorithms\ShortestPath\Dijkstra;
+
+class DijkstraTest extends BaseShortestPathTest
+{
+    protected function createAlg(Vertex $vertex)
+    {
+        return new Dijkstra($vertex);
+    }
+
+    /**
+     * @expectedException UnexpectedValueException
+     */
+    public function testGraphParallelNegative()
+    {
+        // 1 -[10]-> 2
+        // |         ^
+        // \--[-1]---/
+        $graph = new Graph();
+        $v1 = $graph->createVertex(1);
+        $v2 = $graph->createVertex(2);
+        $v1->createEdgeTo($v2)->setWeight(10);
+        $v1->createEdgeTo($v2)->setWeight(-1);
+
+        $alg = $this->createAlg($v1);
+
+        $alg->getEdges();
+    }
+}