App\Models\Forum\Topic::issues PHP Method

    public function issues()
    {
        if ($this->isIssue() === false) {
            return [];
        }
        preg_match_all("/\\[({$this->issueTypes})\\]/i", $this->topic_title, $issues);
        return array_map('strtolower', $issues[1]);
    }

 public function testIssuesWithKeywordAsTitle()
 {
     $topic = new Topic();
     $topic->forum_id = config('osu.forum.help_forum_ids')[0];
     $topic->topic_title = 'invalid herp a derp';
     $this->assertEquals([], $topic->issues());
 }