public function testDifferent()
 {
     $directed = new Order\Directed('diff', 'erent');
     $this->assertEquals(['diff', 'erent'], $directed->getOrder());
 }
 public function testOrderDirected()
 {
     $items = [self::getRandomString(), self::getRandomString()];
     $order = new Order\Directed($items[0], $items[1]);
     $this->assertEquals($items, $order->getOrder());
     $this->assertNotEquals($items, array_reverse($order->getOrder()));
 }