preloadMap := parsePreloadMap(db.Statement.Schema, preloads)

	// avoid random traversal of the map
	preloadNames := make([]string, 0, len(preloadMap))
	for key := range preloadMap {
		preloadNames = append(preloadNames, key)
	}
	sort.Strings(preloadNames)

	isJoined := func(name string) (joined bool, nestedJoins []string) {
		for _, join := range joins {

		t.Fatalf("expected err: %v got err: %v", gorm.ErrDuplicatedKey, err)
	}
}

func TestSupportedDialectorWithErrForeignKeyViolated(t *testing.T) {
	tidbSkip(t, "not support the foreign key feature")

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

	type Museum struct {
		gorm.Model
		Name   string `gorm:"unique"`
		CityID uint

	})
}

// Set store value with key into current db instance's context
func (db *DB) Set(key string, value interface{}) *DB {
	tx := db.getInstance()
	tx.Statement.Settings.Store(key, value)
	return tx
}

// Get get value with key from current db instance's context
func (db *DB) Get(key string) (interface{}, bool) {
	return db.Statement.Settings.Load(key)
}

	cases := []struct {
		values []interface{}
		key    string
	}{
		{[]interface{}{"a"}, "a"},
		{[]interface{}{1, 2, 3}, "1_2_3"},
		{[]interface{}{1, nil, 3}, "1_nil_3"},
		{[]interface{}{[]interface{}{1, 2, 3}}, "[1 2 3]"},
		{[]interface{}{[]interface{}{"1", "2", "3"}}, "[1 2 3]"},
		{[]interface{}{[]interface{}{"1", nil, "3"}}, "[1 <nil> 3]"},
	}
	for _, c := range cases {
		if key := ToStringKey(c.values...); key != c.key {

		for _, foreignKey := range relation.foreignKeys {
			if field := schema.LookUpField(foreignKey); field != nil {
				ownForeignFields = append(ownForeignFields, field)
			} else {
				schema.err = fmt.Errorf("invalid foreign key: %s", foreignKey)
				return
			}
		}
	}

	if len(relation.primaryKeys) > 0 {
		refForeignFields = []*Field{}
		for _, foreignKey := range relation.primaryKeys {

				)

				if rv.Kind() == reflect.Struct && !rvType.ConvertibleTo(TimeReflectType) {
					for i := 0; i < rvType.NumField(); i++ {
						for key, value := range ParseTagSetting(rvType.Field(i).Tag.Get("gorm"), ";") {
							if _, ok := field.TagSettings[key]; !ok {
								field.TagSettings[key] = value
							}
						}
					}

					for i := 0; i < rvType.NumField(); i++ {
						newFieldType := rvType.Field(i).Type

		}
		return nil, fmt.Errorf("%w: %s.%s", ErrUnsupportedDataType, modelType.PkgPath(), modelType.Name())
	}

	// Cache the Schema for performance,
	// Use the modelType or modelType + schemaTable (if it present) as cache key.
	var schemaCacheKey interface{}
	if specialTableName != "" {
		schemaCacheKey = fmt.Sprintf("%p-%s", modelType, specialTableName)
	} else {
		schemaCacheKey = modelType
	}

	}

	AssertAssociationCount(t, user2, "Languages", 0, "after clear")
}

func TestMany2ManyOmitAssociations(t *testing.T) {
	tidbSkip(t, "not support the foreign key feature")

	user := *GetUser("many2many_omit_associations", Config{Languages: 2})

	if err := DB.Omit("Languages.*").Create(&user).Error; err == nil {

		t.Errorf("No error should happen when querying with customized type for primary key, got err %v", err)
	}

	AssertEqual(t, p, p2)
}

func TestStringPrimaryKeyForNumericValueStartingWithZero(t *testing.T) {
	type AddressByZipCode struct {
		ZipCode string `gorm:"primary_key"`
		Address string
	}

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