// TestAddDuplicateDriver ensures that adding a duplicate driver does not
// overwrite an existing one.
func TestAddDuplicateDriver(t *testing.T) {
supportedDrivers := database.SupportedDrivers()
if len(supportedDrivers) == 0 {
t.Errorf("no backends to test")
return
}
dbType := supportedDrivers[0]
// bogusCreateDB is a function which acts as a bogus create and open
// driver function and intentionally returns a failure that can be
// detected if the interface allows a duplicate driver to overwrite an
// existing one.
bogusCreateDB := func(args ...interface{}) (database.DB, error) {
return nil, fmt.Errorf("duplicate driver allowed for database "+
"type [%v]", dbType)
}
// Create a driver that tries to replace an existing one. Set its
// create and open functions to a function that causes a test failure if
// they are invoked.
driver := database.Driver{
DbType: dbType,
Create: bogusCreateDB,
Open: bogusCreateDB,
}
testName := "duplicate driver registration"
err := database.RegisterDriver(driver)
if !checkDbError(t, testName, err, database.ErrDbTypeRegistered) {
return
}
}
import (
"errors"
"fmt"
"os"
"path/filepath"
"github.com/btcsuite/btcd/chaincfg"
database "github.com/btcsuite/btcd/database2"
_ "github.com/btcsuite/btcd/database2/ffldb"
"github.com/btcsuite/btcd/wire"
"github.com/btcsuite/btcutil"
)
var (
btcdHomeDir = btcutil.AppDataDir("btcd", false)
knownDbTypes = database.SupportedDrivers()
activeNetParams = &chaincfg.MainNetParams
// Default global config.
cfg = &config{
DataDir: filepath.Join(btcdHomeDir, "data"),
DbType: "ffldb",
}
)
// config defines the global configuration options.
type config struct {
DataDir string `short:"b" long:"datadir" description:"Location of the btcd data directory"`
DbType string `long:"dbtype" description:"Database backend to use for the Block Chain"`
TestNet3 bool `long:"testnet" description:"Use the test network"`
RegressionTest bool `long:"regtest" description:"Use the regression test network"`