Actualización

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

@@ -0,0 +1,39 @@
+<?php
+
+use Fhaculty\Graph\Graph;
+use Fhaculty\Graph\Vertex;
+use Graphp\Algorithms\ShortestPath\BreadthFirst;
+
+class BreadthFirstTest extends BaseShortestPathTest
+{
+    protected function createAlg(Vertex $vertex)
+    {
+        return new BreadthFirst($vertex);
+    }
+
+    public function testGraphParallelNegative()
+    {
+        // 1 -[10]-> 2
+        // |         ^
+        // \--[-1]---/
+        $graph = new Graph();
+        $v1 = $graph->createVertex(1);
+        $v2 = $graph->createVertex(2);
+        $e1 = $v1->createEdgeTo($v2)->setWeight(10);
+        $v1->createEdgeTo($v2)->setWeight(-1);
+
+        $alg = $this->createAlg($v1);
+
+        $this->assertEquals(1, $alg->getDistance($v2));
+        $this->assertEquals(array(2 => 1), $alg->getDistanceMap());
+        $this->assertEquals(array($e1), $alg->getEdges()->getVector());
+        $this->assertEquals(array($e1), $alg->getEdgesTo($v2)->getVector());
+        $this->assertEquals(array(2 => $v2), $alg->getVertices()->getMap());
+        $this->assertEquals(array(2), $alg->getVertices()->getIds());
+    }
+
+    protected function getExpectedWeight($edges)
+    {
+        return \count($edges);
+    }
+}