public function testSetSortMode()
{
$sphinx = new SphinxClient();
$sphinx->setSortMode(SphinxClient::SPH_SORT_RELEVANCE);
$this->assertSame($sphinx->sort, SphinxClient::SPH_SORT_RELEVANCE);
$sphinx = new SphinxClient();
$sphinx->setSortMode(SphinxClient::SPH_SORT_EXPR, '@count asc');
$this->assertSame($sphinx->sort, SphinxClient::SPH_SORT_EXPR);
$this->assertSame($sphinx->sortby, '@count asc');
}