ID   uint
			Name string
		}
		Level1 struct {
			ID      uint
			Name    string
			Level2s []Level2 `gorm:"many2many:level1_level2s"`
		}
	)

	DB.Migrator().DropTable("level1_level2s", &Level2{}, &Level1{})

	if err := DB.AutoMigrate(new(Level1), new(Level2)); err != nil {
		t.Error(err)
	}

	lvl := Level1{
		Name: "l1",
		Level2s: []Level2{