Flow\Helper\Cycler::random PHP Метод

    public function random($seed = null)
    {
        if (isset($seed)) {
            mt_srand($seed);
        }
        return $this->elements[mt_rand(0, $this->length - 1)];
    }

 public function test_cycle()
 {
     $elements = array(1, 2, 3);
     $cycler = new Helper\Cycler($elements);
     $this->assertTrue($cycler instanceof \IteratorAggregate);
     $this->assertEquals(1, $cycler->next());
     $this->assertEquals(2, $cycler->next());
     $this->assertEquals(3, $cycler->next());
     $this->assertTrue(in_array($cycler->random(), $elements));
 }