[+] add multi row support, closes #54

rows.go

@@ -225,7 +225,7 @@ func (r *Rows) RowError(row int, err error) *Rows {
 // return the same instance to perform subsequent actions.
 // Note that the number of values must match the number
 // of columns
-func (r *Rows) AddRow(values ...interface{}) *Rows {
+func (r *Rows) AddRow(values ...any) *Rows {
 	if len(values) != len(r.defs) {
 		panic("Expected number of values to match number of columns")
 	}
@@ -236,6 +236,15 @@ func (r *Rows) AddRow(values ...interface{}) *Rows {
 	return r
 }
 
+// AddRows adds multiple rows composed from any slice and
+// returns the same instance to perform subsequent actions.
+func (r *Rows) AddRows(values ...[]any) *Rows {
+	for _, value := range values {
+		r.AddRow(value...)
+	}
+	return r
+}
+
 // AddCommandTag will add a command tag to the result set
 func (r *Rows) AddCommandTag(tag pgconn.CommandTag) *Rows {
 	r.commandTag = tag

rows_test.go

@@ -52,12 +52,94 @@ func TestExplicitTypeCasting(t *testing.T) {
 	}
 }
 
+func TestAddRows(t *testing.T) {
+	t.Parallel()
+	mock, err := NewConn()
+	if err != nil {
+		fmt.Println("failed to open sqlmock database:", err)
+	}
+	defer mock.Close(context.Background())
+
+	values := [][]any{
+		{
+			1, "John",
+		},
+		{
+			2, "Jane",
+		},
+		{
+			3, "Peter",
+		},
+		{
+			4, "Emily",
+		},
+	}
+
+	rows := NewRows([]string{"id", "name"}).AddRows(values...)
+	mock.ExpectQuery("SELECT").WillReturnRows(rows).RowsWillBeClosed()
+
+	rs, _ := mock.Query(context.Background(), "SELECT")
+	defer rs.Close()
+
+	for rs.Next() {
+		var id int
+		var name string
+		_ = rs.Scan(&id, &name)
+		fmt.Println("scanned id:", id, "and name:", name)
+	}
+
+	if rs.Err() != nil {
+		fmt.Println("got rows error:", rs.Err())
+	}
+	// Output: scanned id: 1 and title: John
+	// scanned id: 2 and title: Jane
+	// scanned id: 3 and title: Peter
+	// scanned id: 4 and title: Emily
+}
+
+func ExampleRows_AddRows() {
+	mock, err := NewConn()
+	if err != nil {
+		fmt.Println("failed to open sqlmock database:", err)
+	}
+	defer mock.Close(context.Background())
+
+	values := [][]any{
+		{
+			1, "one",
+		},
+		{
+			2, "two",
+		},
+	}
+
+	rows := NewRows([]string{"id", "title"}).AddRows(values...)
+
+	mock.ExpectQuery("SELECT").WillReturnRows(rows)
+
+	rs, _ := mock.Query(context.Background(), "SELECT")
+	defer rs.Close()
+
+	for rs.Next() {
+		var id int
+		var title string
+		_ = rs.Scan(&id, &title)
+		fmt.Println("scanned id:", id, "and title:", title)
+	}
+
+	if rs.Err() != nil {
+		fmt.Println("got rows error:", rs.Err())
+	}
+	// Output: scanned id: 1 and title: one
+	// scanned id: 2 and title: two
+}
+
 func ExampleRows() {
 	mock, err := NewConn()
 	if err != nil {
 		fmt.Println("failed to open pgxmock database:", err)
 	}
-	// defer mock.Close(context.Background())
+	defer mock.Close(context.Background())
 
 	rows := NewRows([]string{"id", "title"}).
 		AddRow(1, "one").