if delta < 0 {
		rx = 0
		errStr = "network disconnection issues detected"
	}

	globalNetPerfRX.Reset()
	return madmin.NetperfNodeResult{Endpoint: "", TX: r.n / uint64(duration.Seconds()), RX: uint64(rx / delta.Seconds()), Error: errStr}
}

func siteNetperf(ctx context.Context, duration time.Duration) madmin.SiteNetPerfNodeResult {
	r := &netperfReader{eof: make(chan struct{})}

		t.Errorf("Failed, result.DeletedAt: %v is not same as expected.DeletedAt: %v", result.DeletedAt, expected.DeletedAt)
	}
}

func TestDeletedAtOneOr(t *testing.T) {
	actualSQL := DB.ToSQL(func(tx *gorm.DB) *gorm.DB {
		return tx.Or("id = ?", 1).Find(&User{})
	})

	if !regexp.MustCompile(` WHERE id = 1 AND .users.\..deleted_at. IS NULL`).MatchString(actualSQL) {
		t.Fatalf("invalid sql generated, got %v", actualSQL)
	}
}

	connStats := globalConnStats.toServerConnStats()

	// Network Sent/Received Bytes (internode)
	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(
			prometheus.BuildFQName(interNodeNamespace, "tx", "bytes_total"),
			"Total number of bytes sent to the other peer nodes by current MinIO server instance",
			nil, nil),
		prometheus.CounterValue,
		float64(connStats.internodeOutputBytes),
	)

	saveTokenOwner := func(owner *TokenOwner) (*TokenOwner, error) {
		var newOwner TokenOwner
		if err := DB.Transaction(func(tx *gorm.DB) error {
			if err := tx.Session(&gorm.Session{FullSaveAssociations: true}).Save(owner).Error; err != nil {
				return err
			}
			if err := tx.Preload("Token").First(&newOwner, owner.ID).Error; err != nil {
				return err
			}
			return nil
		}); err != nil {
			return nil, err

			}

			err = tx.Exec(createTableSQL, values...).Error
			return err
		}); err != nil {
			return err
		}
	}
	return nil
}

// DropTable drop table for values
func (m Migrator) DropTable(values ...interface{}) error {
	values = m.ReorderModels(values, false)
	for i := len(values) - 1; i >= 0; i-- {
		tx := m.DB.Session(&gorm.Session{})

func TestTableWithNamer(t *testing.T) {
	db, _ := gorm.Open(tests.DummyDialector{}, &gorm.Config{
		NamingStrategy: schema.NamingStrategy{
			TablePrefix: "t_",
		},
	})

	sql := db.ToSQL(func(tx *gorm.DB) *gorm.DB {
		return tx.Model(&UserWithTableNamer{}).Find(&UserWithTableNamer{})
	})

	if !regexp.MustCompile("SELECT \\* FROM `t_users`").MatchString(sql) {
		t.Errorf("Table with namer, got %v", sql)
	}
}

	}
	user := User{ID: 1, Name: "king"}
	tx := DB.Session(&gorm.Session{DryRun: true}).Save(&user)

	if err := tx.Error; err != nil {
		t.Fatalf("failed to update user,missing where condition,err=%+v", err)
	}

	if !regexp.MustCompile("WHERE .id. = [^ ]+$").MatchString(tx.Statement.SQL.String()) {
		t.Fatalf("invalid updating SQL, got %v", tx.Statement.SQL.String())
	}

	Tier             string `json:"tier"`
	TimeToResponseNS int64  `json:"timeToResponseNS"`
	OutputBytes      int64  `json:"tx,omitempty"`
	Error            string `json:"error,omitempty"`
}

func (op auditTierOp) String() string {
	// flattening the auditTierOp{} for audit
	return fmt.Sprintf("tier:%s,respNS:%d,tx:%d,err:%s", op.Tier, op.TimeToResponseNS, op.OutputBytes, op.Error)
}

	if err = tx.Save(&user1).Error; err != nil {
		t.Fatalf("No error should raise, but got %v", err)
	}

	if err = tx.First(&User{}, "name = ?", user1.Name).Error; err != nil {
		t.Fatalf("Should find saved record, but got %v", err)
	}

	if sqlTx, ok := tx.Statement.ConnPool.(gorm.TxCommitter); !ok || sqlTx == nil {
		t.Fatalf("Should return the underlying sql.Tx")
	}

	tx.Rollback()

	}

	var err error
	_ = DB.Migrator().DropTable(&RelationModel1{}, &RelationModel2{}, &RelationModel3{})

	tx := DB.Session(&gorm.Session{})
	tx.IgnoreRelationshipsWhenMigrating = true

	err = tx.AutoMigrate(&RelationModel3{})
	if err != nil {
		t.Errorf("AutoMigrate err:%v", err)
	}

	// RelationModel3 should be existed