// 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
}
}
// isSupportedDbType returns whether or not the passed database type is
// currently supported.
func isSupportedDbType(dbType string) bool {
supportedDrivers := database.SupportedDrivers()
for _, driver := range supportedDrivers {
if dbType == driver {
return true
}
}
return false
}
defaultNonAggressive = false
defaultNoMiningStateSync = false
defaultAllowOldVotes = false
defaultMaxOrphanTransactions = 1000
defaultMaxOrphanTxSize = 5000
defaultSigCacheMaxSize = 100000
sampleConfigFilename = "sample-dcrd.conf"
defaultTxIndex = false
defaultNoExistsAddrIndex = false
)
var (
defaultHomeDir = dcrutil.AppDataDir("dcrd", false)
defaultConfigFile = filepath.Join(defaultHomeDir, defaultConfigFilename)
defaultDataDir = filepath.Join(defaultHomeDir, defaultDataDirname)
knownDbTypes = database.SupportedDrivers()
defaultRPCKeyFile = filepath.Join(defaultHomeDir, "rpc.key")
defaultRPCCertFile = filepath.Join(defaultHomeDir, "rpc.cert")
defaultLogDir = filepath.Join(defaultHomeDir, defaultLogDirname)
)
// runServiceCommand is only set to a real function on Windows. It is used
// to parse and execute service commands specified via the -s flag.
var runServiceCommand func(string) error
// minUint32 is a helper function to return the minimum of two uint32s.
// This avoids a math import and the need to cast to floats.
func minUint32(a, b uint32) uint32 {
if a < b {
return a
}