PHPspec Arraycollection

        
        $collection->getIterator()->willReturn($iterator);
        $iterator->rewind()->willReturn(null);
        $valueCount = 1;
        $iterator->valid()->will(
            function () use (&$valueCount) {
                return $valueCount-- > 0;
            }
        );
        $iterator->current()->willReturn($value);
        $iterator->next()->willReturn(null);