allow to use a custom converter

driver.go

@@ -39,7 +39,7 @@ func (d *mockDriver) Open(dsn string) (driver.Conn, error) {
 // and a mock to manage expectations.
 // Pings db so that all expectations could be
 // asserted.
-func New() (*sql.DB, Sqlmock, error) {
+func New(options ...func(*sqlmock) error) (*sql.DB, Sqlmock, error) {
 	pool.Lock()
 	dsn := fmt.Sprintf("sqlmock_db_%d", pool.counter)
 	pool.counter++
@@ -48,7 +48,7 @@ func New() (*sql.DB, Sqlmock, error) {
 	pool.conns[dsn] = smock
 	pool.Unlock()
 
-	return smock.open()
+	return smock.open(options)
 }
 
 // NewWithDSN creates sqlmock database connection
@@ -64,7 +64,7 @@ func New() (*sql.DB, Sqlmock, error) {
 //
 // It is not recommended to use this method, unless you
 // really need it and there is no other way around.
-func NewWithDSN(dsn string) (*sql.DB, Sqlmock, error) {
+func NewWithDSN(dsn string, options ...func(*sqlmock) error) (*sql.DB, Sqlmock, error) {
 	pool.Lock()
 	if _, ok := pool.conns[dsn]; ok {
 		pool.Unlock()
@@ -74,5 +74,14 @@ func NewWithDSN(dsn string) (*sql.DB, Sqlmock, error) {
 	pool.conns[dsn] = smock
 	pool.Unlock()
 
-	return smock.open()
+	return smock.open(options)
+}
+
+// WithValueConverter allows to create a sqlmock connection
+// with a custom ValueConverter to support drivers with special data types.
+func WithValueConverter(converter driver.ValueConverter) func(*sqlmock) error {
+	return func(s *sqlmock) error {
+		s.converter = converter
+		return nil
+	}
 }