public function testGettersAndSetters()
{
$this->object->set_label('coucou les chicos');
$this->assertEquals('coucou-les-chicos', $this->object->get_label());
$this->object->set_label('');
$this->assertEquals('untitled', $this->object->get_label());
$this->object->set_label('JE ANp ra&é"\\/,;:!§/.?%µ*ù$]@^\\[{#~234567890°+\'(-è_çà');
$this->assertEquals('JE-ANp-raeu234567890-e_ca', $this->object->get_label());
}