public function testCheckingTotalWordListCoverage()
 {
     $first = new WordList();
     $first->addWord('foo');
     $first->addWord('foo');
     $first->addWord('bar');
     $first->addWord('baz');
     $first->addWord('foo');
     $second = new WordList();
     $second->addWord('baz');
     $second->addWord('foo');
     $second->addWord('bar');
     $second->addWord('foo');
     $second->addWord('foo');
     $this->assertTrue($first->isCoveredByWordList($second));
 }