public function testSet_thumbtitle()
{
$this->object_mono->set_thumbtitle(true);
$this->assertTrue($this->object_mono->get_thumbtitle());
$this->object_mono->set_thumbtitle('fr');
$this->assertEquals('fr', $this->object_mono->get_thumbtitle());
$this->object_mono->set_thumbtitle(false);
$this->assertFalse($this->object_mono->get_thumbtitle());
}