public function testHasCodeAndNomAndPays()
 {
     $pays = new Pays('France');
     $region = new Region($pays, 11, 'Île-de-France');
     $this->assertEquals(11, $region->getCode());
     $this->assertEquals('Île-de-France', $region->getNom());
     $this->assertEquals($pays, $region->getPays());
 }