public function testMultipleSearch()
{
$tnt = new TNTSearch();
$tnt->loadConfig($this->config);
$indexer = $tnt->createIndex($this->indexName);
$indexer->disableOutput = true;
$indexer->query('SELECT id, title, article FROM articles;');
$indexer->run();
$tnt->selectIndex($this->indexName);
$res = $tnt->search('Othello');
$this->assertEmpty($res['ids']);
$this->assertEquals(12, $tnt->totalDocumentsInCollection());
$index = $tnt->getIndex();
$count = $index->countWordInWordList('Othello');
$this->assertTrue($count == 0, 'Word Othello should be 0');
$index->insert(['id' => '13', 'title' => 'Othello', 'article' => 'For she had eyes and chose me.']);
$count = $index->countWordInWordList('Othello');
$this->assertEquals(1, $count, 'Word Othello should be 1');
$this->assertEquals(13, $tnt->totalDocumentsInCollection());
$res = $tnt->search('Othello');
$this->assertEquals([13], $res['ids']);
}