public function test_restore()
{
$repo = App::make(BilletRepository::class);
$billet = factory(Billet::class)->create();
$repo->delete($billet->id);
$restore = $repo->restore($billet->id);
$get = $repo->get($billet->id);
$this->assertEquals(1, $restore);
$this->assertNull($get->deleted_at);
$this->assertInstanceOf(Billet::class, $get);
}