Ouzo\Utilities\Iterator\FluentIteratorTest::shouldNotCallMapFunctionOnSkippedElements PHP Метод

    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);
    }