public function testGetWordsArrayFromEmptyString()
 {
     $correct = array();
     $words = '';
     $wordsAy = $this->genUtil->getWordsArray($words);
     $this->assertEquals($correct, $wordsAy, 'Words is empty string.');
     $words = null;
     $wordsAy = $this->genUtil->getWordsArray($words);
     $this->assertEquals($correct, $wordsAy, 'Words is null.');
 }