    public function testRandomBracketsInWellformedCode()
    {
        $this->assertProduces('[b][[][[i]heh[/i][/b]',
                              '<strong>[[][<em>heh</em></strong>');
    }
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.