logger.LogIf(ctx, fmt.Errorf("tier-journal: failed open read-only journal for processing %s", err))
		return
	}
	defer ro.Close()
	mr := msgpNewReader(ro)
	defer readMsgpReaderPoolPut(mr)

	done := false
	for {
		var entry jentry
		err := entry.DecodeMsg(mr)
		if errors.Is(err, io.EOF) {
			done = true
			break
		}
		if err != nil {

	for _, item := range readOldToNewCases {
		bs, err := item.je.MarshalMsg(nil)
		if err != nil {
			t.Fatal(err)
		}
		b.Write(bs)
	}

	mr := msgp.NewReader(&b)
	for i, item := range readOldToNewCases {
		var je jentry
		err := je.DecodeMsg(mr)
		if err != nil {
			t.Fatal(err)
		}
		if je != item.exp {
			t.Errorf("Case %d: Expected: %v Got: %v", i, item.exp, je)
		}
	}
}

	OtherToy     Toy `gorm:"polymorphic:Owner;polymorphicValue:hamster_other"`
}

func TestNamedPolymorphic(t *testing.T) {
	DB.Migrator().DropTable(&Hamster{})
	DB.AutoMigrate(&Hamster{})

	hamster := Hamster{Name: "Mr. Hammond", PreferredToy: Toy{Name: "bike"}, OtherToy: Toy{Name: "treadmill"}}
	DB.Save(&hamster)

	hamster2 := Hamster{}
	DB.Preload("PreferredToy").Preload("OtherToy").Find(&hamster2, hamster.Id)