Add (failing) test with 100% coverage for Algorithm\Parallel

Author: clue

tests/ParallelTest.php

@@ -0,0 +1,97 @@
+<?php
+
+use Fhaculty\Graph\Algorithm\Parallel as AlgorithmParallel;
+use Fhaculty\Graph\Graph;
+
+class ParallelTest extends TestCase
+{
+    public function testGraphEmpty()
+    {
+        $graph = new Graph();
+
+        $alg = new AlgorithmParallel($graph);
+
+        $this->assertFalse($alg->hasEdgeParallel());
+    }
+
+    public function testDirectedCycleIsNotConsideredParallel()
+    {
+        // 1 -> 2
+        // 2 -> 1
+        $graph = new Graph();
+        $v1 = $graph->createVertex(1);
+        $v2 = $graph->createVertex(2);
+        $e1 = $v1->createEdgeTo($v2);
+        $e2 = $v2->createEdgeTo($v1);
+
+        $alg = new AlgorithmParallel($graph);
+
+        $this->assertFalse($alg->hasEdgeParallel());
+        $this->assertEquals(array(), $alg->getEdgesParallelEdge($e1));
+        $this->assertEquals(array(), $alg->getEdgesParallelEdge($e2));
+    }
+
+    public function testDirectedParallelEdge()
+    {
+        // 1 -> 2
+        // 1 -> 2
+        $graph = new Graph();
+        $v1 = $graph->createVertex(1);
+        $v2 = $graph->createVertex(2);
+        $e1 = $v1->createEdgeTo($v2);
+        $e2 = $v1->createEdgeTo($v2);
+
+        $alg = new AlgorithmParallel($graph);
+
+        $this->assertTrue($alg->hasEdgeParallel());
+        $this->assertEquals(array($e2), $alg->getEdgesParallelEdge($e1));
+        $this->assertEquals(array($e1), $alg->getEdgesParallelEdge($e2));
+    }
+
+    public function testMixedParallelEdge()
+    {
+        // 1 -> 2
+        // 1 -- 2
+        $graph = new Graph();
+        $v1 = $graph->createVertex(1);
+        $v2 = $graph->createVertex(2);
+        $e1 = $v1->createEdgeTo($v2);
+        $e2 = $v1->createEdge($v2);
+
+        $alg = new AlgorithmParallel($graph);
+
+        $this->assertTrue($alg->hasEdgeParallel());
+        $this->assertEquals(array($e2), $alg->getEdgesParallelEdge($e1));
+        $this->assertEquals(array($e1), $alg->getEdgesParallelEdge($e2));
+    }
+
+    public function testMixedParallelEdgesMultiple()
+    {
+        // 1 -> 2
+        // 1 -> 2
+        // 1 -- 2
+        // 1 -- 2
+        // 2 -> 1
+        // 2 -> 1
+        $graph = new Graph();
+        $v1 = $graph->createVertex(1);
+        $v2 = $graph->createVertex(2);
+        $e1 = $v1->createEdgeTo($v2);
+        $e2 = $v1->createEdgeTo($v2);
+        $e3 = $v1->createEdge($v2);
+        $e4 = $v1->createEdge($v2);
+        $e5 = $v2->createEdgeTo($v1);
+        $e6 = $v2->createEdgeTo($v1);
+
+        $alg = new AlgorithmParallel($graph);
+
+        $this->assertTrue($alg->hasEdgeParallel());
+        $this->assertEquals(array($e2, $e3, $e4), $alg->getEdgesParallelEdge($e1));
+        $this->assertEquals(array($e1, $e3, $e4), $alg->getEdgesParallelEdge($e2));
+        $this->assertEquals(array($e1, $e2, $e4, $e5, $e6), $alg->getEdgesParallelEdge($e3));
+        $this->assertEquals(array($e1, $e2, $e3, $e5, $e6), $alg->getEdgesParallelEdge($e4));
+        $this->assertEquals(array($e3, $e4, $e6), $alg->getEdgesParallelEdge($e5));
+        $this->assertEquals(array($e3, $e4, $e5), $alg->getEdgesParallelEdge($e6));
+    }
+
+}