package tests import ( "database/sql/driver" "fmt" ) type DummyString struct { value string } func NewDummyString(s string) DummyString { return DummyString{ value: s, } } func (d *DummyString) Scan(value interface{}) error { switch v := value.(type) { case string: d.value = v default: d.value = fmt.Sprintf("%v", value) } return nil } func (d DummyString) Value() (driver.Value, error) { return d.value, nil } func (d DummyString) String() string { return d.value }