public function testLowerCase()
{
$filter = new Filter\LowerCase();
$this->filterTest($filter, 'tESt', 'test');
$this->filterTest($filter, ['TEST1', 'tESt2'], ['test1', 'test2']);
// Tests multidimensional array filtering
$this->filterTest($filter, ['TEST1', ['tESt2', 'TeST']], ['test1', ['test2', 'test']]);
$this->filterArrayTest($filter);
}