public function test_updating_metadata()
{
$mao = $this->registry->getMAO("product");
$id = MetadataId::generate();
$mao->save(new Metadata($id, "product", ["sku" => "DUMPLIE_SKU_1", "name" => "Super Product"]));
$metadata = $mao->findBy(["sku" => "DUMPLIE_SKU_1"]);
$metadata->name = "Super Product Deluxe";
$mao->save($metadata);
$metadata = $mao->findBy(["sku" => "DUMPLIE_SKU_1"]);
$this->assertEquals("Super Product Deluxe", $metadata->name);
}