public function assertQueriesCountByMethod($n, $class, $method, $message = '')
{
$this->readQueries();
$class = ltrim($class, '\\');
$message = $message ? $message : 'Failed asserting that ' . $n . ' queries were made by method [' . $class . '::' . $method . ']';
$statementIterator = new ClassMethodQueriesFilter(new \ArrayIterator($this->filteredQueries), $class, $method);
\PHPUnit_Framework_Assert::assertCount($n, iterator_to_array($statementIterator), $message);
}