public function testCacheDoesNotDisturbResultsWhenChangingParam()
{
$this->paginator->setCurrentPageNumber(1)->getCurrentItems();
$pageItems = $this->paginator->setItemCountPerPage(5)->getCurrentItems();
$expected = new \ArrayIterator(range(1, 5));
$this->assertEquals($expected, $pageItems);
$pageItems = $this->paginator->getItemsByPage(2);
$expected = new \ArrayIterator(range(6, 10));
$this->assertEquals($expected, $pageItems);
// change the inside Paginator scale
$pageItems = $this->paginator->setItemCountPerPage(8)->setCurrentPageNumber(3)->getCurrentItems();
$pageItems = $this->paginator->getPageItemCache();
$expected = new \ArrayIterator(range(17, 24));
$this->assertEquals($expected, $pageItems[3]);
// get back to already cached data
$this->paginator->setItemCountPerPage(5);
$pageItems = $this->paginator->getPageItemCache();
$expected = array(1 => new \ArrayIterator(range(1, 5)), 2 => new \ArrayIterator(range(6, 10)));
$this->assertEquals($expected[1], $pageItems[1]);
$this->assertEquals($expected[2], $pageItems[2]);
}