Fix test

internal/statements/delete.go

@@ -14,7 +14,7 @@ import (
 	"xorm.io/xorm/schemas"
 )
 
-func (statement *Statement) writeDeleteOrder(w builder.Writer) error {
+func (statement *Statement) writeDeleteOrder(w *builder.BytesWriter) error {
 	if err := statement.writeOrderBys(w); err != nil {
 		return err
 	}

internal/statements/order_by.go

@@ -10,6 +10,12 @@ import (
 	"xorm.io/builder"
 )
 
+type orderBy struct {
+	orderStr  interface{}
+	orderArgs []interface{}
+	direction string // ASC, DESC or "", "" means raw orderStr
+}
+
 func (statement *Statement) HasOrderBy() bool {
 	return len(statement.orderBy) > 0
 }
@@ -19,27 +25,34 @@ func (statement *Statement) ResetOrderBy() {
 	statement.orderBy = []orderBy{}
 }
 
-func (statement *Statement) writeOrderBy(w builder.Writer, orderBy orderBy) error {
+func (statement *Statement) writeOrderBy(w *builder.BytesWriter, orderBy orderBy) error {
 	switch t := orderBy.orderStr.(type) {
 	case (*builder.Expression):
-		if _, err := fmt.Fprint(w, statement.ReplaceQuote(t.Content())); err != nil {
+		if _, err := fmt.Fprint(w.Builder, statement.dialect.Quoter().Replace(t.Content())); err != nil {
 			return err
 		}
 		w.Append(t.Args()...)
 		return nil
 	case string:
-		if _, err := fmt.Fprint(w, statement.dialect.Quoter().Quote(t)); err != nil {
+		if orderBy.direction == "" {
+			if _, err := fmt.Fprint(w.Builder, statement.dialect.Quoter().Replace(t)); err != nil {
+				return err
+			}
+			w.Append(orderBy.orderArgs...)
+			return nil
+		}
+		if err := statement.dialect.Quoter().QuoteTo(w.Builder, t); err != nil {
 			return err
 		}
-		w.Append(orderBy.orderArgs...)
-		return nil
+		_, err := fmt.Fprint(w, " ", orderBy.direction)
+		return err
 	default:
 		return ErrUnSupportedSQLType
 	}
 }
 
 // WriteOrderBy write order by to writer
-func (statement *Statement) writeOrderBys(w builder.Writer) error {
+func (statement *Statement) writeOrderBys(w *builder.BytesWriter) error {
 	if len(statement.orderBy) == 0 {
 		return nil
 	}
@@ -62,14 +75,14 @@ func (statement *Statement) writeOrderBys(w builder.Writer) error {
 
 // OrderBy generate "Order By order" statement
 func (statement *Statement) OrderBy(order interface{}, args ...interface{}) *Statement {
-	statement.orderBy = append(statement.orderBy, orderBy{order, args})
+	statement.orderBy = append(statement.orderBy, orderBy{order, args, ""})
 	return statement
 }
 
 // Desc generate `ORDER BY xx DESC`
 func (statement *Statement) Desc(colNames ...string) *Statement {
 	for _, colName := range colNames {
-		statement.orderBy = append(statement.orderBy, orderBy{colName + " DESC", nil})
+		statement.orderBy = append(statement.orderBy, orderBy{colName, nil, "DESC"})
 	}
 	return statement
 }
@@ -77,7 +90,7 @@ func (statement *Statement) Desc(colNames ...string) *Statement {
 // Asc provide asc order by query condition, the input parameters are columns.
 func (statement *Statement) Asc(colNames ...string) *Statement {
 	for _, colName := range colNames {
-		statement.orderBy = append(statement.orderBy, orderBy{colName + " ASC", nil})
+		statement.orderBy = append(statement.orderBy, orderBy{colName, nil, "ASC"})
 	}
 	return statement
 }

internal/statements/statement.go

@@ -41,11 +41,6 @@ type join struct {
 	args      []interface{}
 }
 
-type orderBy struct {
-	orderStr  interface{}
-	orderArgs []interface{}
-}
-
 // Statement save all the sql info for executing SQL
 type Statement struct {
 	RefTable        *schemas.Table