Relationships             Relationships
	CreateClauses             []clause.Interface
	QueryClauses              []clause.Interface
	UpdateClauses             []clause.Interface
	DeleteClauses             []clause.Interface
	BeforeCreate, AfterCreate bool
	BeforeUpdate, AfterUpdate bool
	BeforeDelete, AfterDelete bool
	BeforeSave, AfterSave     bool

		Vars:         []interface{}{sql.Named("name", "jinzhu")},
		Result:       "name1 = ? AND name2 = ?",
		ExpectedVars: []interface{}{"jinzhu", "jinzhu"},
	}, {
		SQL:          "name1 = @name AND name2 = @@name",
		Vars:         []interface{}{map[string]interface{}{"name": "jinzhu"}},
		Result:       "name1 = ? AND name2 = @@name",
		ExpectedVars: []interface{}{"jinzhu"},
	}, {

		Unscope:      true,
	}
}

func (association *Association) Find(out interface{}, conds ...interface{}) error {
	if association.Error == nil {
		association.Error = association.buildCondition().Find(out, conds...).Error
	}
	return association.Error
}

func (association *Association) Append(values ...interface{}) error {
	if association.Error == nil {
		switch association.Relationship.Type {

}

func TestToStringKey(t *testing.T) {
	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 {

		field.ValueOf = func(ctx context.Context, value reflect.Value) (interface{}, bool) {
			fieldValue := reflect.Indirect(value).Field(fieldIndex)
			return fieldValue.Interface(), fieldValue.IsZero()
		}
	default:
		field.ValueOf = func(ctx context.Context, v reflect.Value) (interface{}, bool) {
			v = reflect.Indirect(v)
			for _, fieldIdx := range field.StructField.Index {

)

func TestLocking(t *testing.T) {
	results := []struct {
		Clauses []clause.Interface
		Result  string
		Vars    []interface{}
	}{
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Locking{Strength: clause.LockingStrengthUpdate}},
			"SELECT * FROM `users` FOR UPDATE", nil,
		},
		{

	if db != nil {
		for _, plugin := range c.Plugins {
			if err := plugin.Initialize(db); err != nil {
				return err
			}
		}
	}
	return nil
}

// Option gorm option interface
type Option interface {
	Apply(*Config) error
	AfterInitialize(*DB) error
}

// DB GORM DB definition
type DB struct {
	*Config
	Error        error
	RowsAffected int64
	Statement    *Statement

	"testing"

	"gorm.io/gorm/clause"
)

func TestDelete(t *testing.T) {
	results := []struct {
		Clauses []clause.Interface
		Result  string
		Vars    []interface{}
	}{
		{
			[]clause.Interface{clause.Delete{}, clause.From{}},
			"DELETE FROM `users`", nil,
		},
		{
			[]clause.Interface{clause.Delete{Modifier: "LOW_PRIORITY"}, clause.From{}},
			"DELETE LOW_PRIORITY FROM `users`", nil,
		},
	}

		for _, name := range []string{"Name", "Constraint"} {
			if reflect.ValueOf(result).FieldByName(name).Interface() != reflect.ValueOf(v).FieldByName(name).Interface() {
				t.Errorf(
					"check %v %v should equal, expects %v, got %v",
					k, name, reflect.ValueOf(result).FieldByName(name).Interface(), reflect.ValueOf(v).FieldByName(name).Interface(),
				)
			}
		}
	}
}

func TestParseUniqueConstraints(t *testing.T) {

	}

	DB.Create(&users)

	var user User
	DB.First(&user, map[string]interface{}{"name": users[0].Name})
	CheckUser(t, user, users[0])

	user = User{}
	DB.Where(map[string]interface{}{"name": users[1].Name}).First(&user)
	CheckUser(t, user, users[1])

	var results []User
	DB.Where(map[string]interface{}{"name": users[2].Name}).Find(&results)
	if len(results) != 1 {