public function testSuccessIsReturnedIfOutputIsCorrect()
{
$input = new Input('learnyouphp', ['program' => __DIR__ . '/../res/time-server/solution.php']);
$results = $this->exerciseDispatcher->verify($this->exercise, $input);
$this->assertCount(2, $results);
$success = iterator_to_array($results)[0];
$this->assertInstanceOf(Success::class, $success);
}