upgrade

vendor/graphp/algorithms/tests/DirectedTest.php

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+<?php
+
+use Fhaculty\Graph\Graph;
+use Graphp\Algorithms\Directed as AlgorithmDirected;
+
+class DirectedTest extends TestCase
+{
+    public function testGraphEmpty()
+    {
+        $graph = new Graph();
+
+        $alg = new AlgorithmDirected($graph);
+
+        $this->assertFalse($alg->hasDirected());
+        $this->assertFalse($alg->hasUndirected());
+        $this->assertFalse($alg->isMixed());
+    }
+
+    public function testGraphUndirected()
+    {
+        // 1 -- 2
+        $graph = new Graph();
+        $graph->createVertex(1)->createEdge($graph->createVertex(2));
+
+        $alg = new AlgorithmDirected($graph);
+
+        $this->assertFalse($alg->hasDirected());
+        $this->assertTrue($alg->hasUndirected());
+        $this->assertFalse($alg->isMixed());
+    }
+
+    public function testGraphDirected()
+    {
+        // 1 -> 2
+        $graph = new Graph();
+        $graph->createVertex(1)->createEdgeTo($graph->createVertex(2));
+
+        $alg = new AlgorithmDirected($graph);
+
+        $this->assertTrue($alg->hasDirected());
+        $this->assertFalse($alg->hasUndirected());
+        $this->assertFalse($alg->isMixed());
+    }
+
+    public function testGraphMixed()
+    {
+        // 1 -- 2 -> 3
+        $graph = new Graph();
+        $graph->createVertex(1)->createEdge($graph->createVertex(2));
+        $graph->getVertex(2)->createEdgeTo($graph->createVertex(3));
+
+        $alg = new AlgorithmDirected($graph);
+
+        $this->assertTrue($alg->hasDirected());
+        $this->assertTrue($alg->hasUndirected());
+        $this->assertTrue($alg->isMixed());
+    }
+}