const tblType = "BASE TABLE"
	const tblComment = "foobar comment"

	type City struct {
		gorm.Model
		Name string `gorm:"unique"`
	}

	DB.Migrator().DropTable(&City{})

	if err := DB.Set("gorm:table_options",
		fmt.Sprintf("ENGINE InnoDB COMMENT '%s'", tblComment)).AutoMigrate(&City{}); err != nil {
		t.Fatalf("failed to migrate cities tables, got error: %v", err)
	}