Ouzo\Utilities\Iterator\FluentIterator::from PHP Метод

    public static function from($iterator)
    {
        return new self($iterator);
    }

 /**
  * @test
  */
 public function shouldNotCallMapFunctionOnSkippedElements()
 {
     //given
     $iterator = new \ArrayIterator(array(1, 2, 3));
     $mapper = Mock::create();
     Mock::when($mapper)->map(Mock::anyArgList())->thenAnswer(function (MethodCall $methodCall) {
         return Arrays::first($methodCall->arguments);
     });
     //when
     $result = FluentIterator::from($iterator)->map(function ($elem) use($mapper) {
         return $mapper->map($elem);
     })->skip(1)->limit(1);
     //then
     $this->assertEquals(array(2), array_values($result->toArray()));
     Mock::verify($mapper)->neverReceived()->map(1);
     Mock::verify($mapper)->neverReceived()->map(3);
 }