public function assertQueriesCountByFilter($n, $filter, $message = '')
{
$this->readQueries();
$message = $message ? $message : 'Failed asserting that ' . $n . ' queries were triggered by filter [' . $filter . ']';
$iterator = new FiltersQueriesFilter(new \ArrayIterator($this->filteredQueries), $filter);
\PHPUnit_Framework_Assert::assertCount($n, iterator_to_array($iterator), $message);
}