}

var fdriver driver.Driver = &fakeDriver{}

func init() {
	Register("test", fdriver)
}

type Dummy struct {
	driver.Driver
}

func TestDrivers(t *testing.T) {
	unregisterAllDrivers()
	Register("test", fdriver)
	Register("invalid", Dummy{})
	all := Drivers()
	if len(all) < 2 || !slices.IsSorted(all) || !slices.Contains(all, "test") || !slices.Contains(all, "invalid") {

	if driver == nil {
		panic("sql: Register driver is nil")
	}
	if _, dup := drivers[name]; dup {
		panic("sql: Register called twice for driver " + name)
	}
	drivers[name] = driver
}

func unregisterAllDrivers() {
	driversMu.Lock()
	defer driversMu.Unlock()
	// For tests.
	drivers = make(map[string]driver.Driver)
}

// Drivers returns a sorted list of the names of the registered drivers.
func Drivers() []string {