Improved test for variant serializer
Improved test for variant serializer

Em-AK/openfoodnetwork,lin-d-hop/openfoodnetwork,mkllnk/openfoodnetwork,Matt-Yorkley/openfoodnetwork,openfoodfoundation/openfoodnetwork,KateDavis/openfoodnetwork,Matt-Yorkley/openfoodnetwork,lin-d-hop/openfoodnetwork,oeoeaio/openfoodnetwork,oeoeaio/openfoodnetwork,oeoeaio/openfoodnetwork,Matt-Yorkley/openfoodnetwork,Em-AK/openfoodnetwork,Em-AK/openfoodnetwork,mkllnk/openfoodnetwork,openfoodfoundation/openfoodnetwork,openfoodfoundation/openfoodnetwork,KateDavis/openfoodnetwork,lin-d-hop/openfoodnetwork,mkllnk/openfoodnetwork,oeoeaio/openfoodnetwork,Matt-Yorkley/openfoodnetwork,lin-d-hop/openfoodnetwork,KateDavis/openfoodnetwork,mkllnk/openfoodnetwork,Em-AK/openfoodnetwork,openfoodfoundation/openfoodnetwork,KateDavis/openfoodnetwork