Fhaculty\Graph\Tests\Set\VerticesTest::testDuplicates PHP Method

    public function testDuplicates()
    {
        $graph = new Graph();
        $v1 = $graph->createVertex(1);
        $vertices = $this->createVertices(array($v1, $v1, $v1));
        $this->assertInstanceOf('Fhaculty\\Graph\\Set\\Vertices', $vertices);
        $this->assertCount(3, $vertices);
        $this->assertTrue($vertices->hasDuplicates());
        $verticesDistinct = $vertices->getVerticesDistinct();
        $this->assertInstanceOf('Fhaculty\\Graph\\Set\\Vertices', $verticesDistinct);
        $this->assertCount(1, $verticesDistinct);
        $this->assertFalse($verticesDistinct->hasDuplicates());
        $this->assertSame($verticesDistinct, $verticesDistinct->getVerticesDistinct());
    }