if err != nil {
		t.Error(err)
	}

	// method with hooks
	err = DB.Transaction(func(tx1 *gorm.DB) error {
		// callMethod do
		tx2 := tx1.Find(&User{}).Session(&gorm.Session{NewDB: true})
		// trx in hooks
		return tx2.Transaction(func(tx3 *gorm.DB) error {
			return tx3.Where("user_id", user.ID).Delete(&Account{}).Error
		})
	})

	if err != nil {
		t.Error(err)
	}

		rw.Write([]byte("Hello"))
	})).ts

	cases := []struct {
		trailer Header
		wantErr string
	}{
		{Header{"Trx": {"x\r\nX-Another-One"}}, `invalid trailer field value for "Trx"`},
		{Header{"\r\nTrx": {"X-Another-One"}}, `invalid trailer field name "\r\nTrx"`},
	}

	for i, tt := range cases {
		testName := fmt.Sprintf("%s%d", mode, i)