diff --git a/sort/sort.go b/sort/sort.go
index a8b0b04..58a9046 100644
--- a/sort/sort.go
+++ b/sort/sort.go
@@ -1,6 +1,7 @@
 package sort
 
 import (
+	"fmt"
 	"sort"
 	"strings"
 )
@@ -59,6 +60,12 @@ func (s *mapSorter[T]) Values() []T {
 	return ret
 }
 
+func (s *mapSorter[T]) String() string {
+	return fmt.Sprintf("map[%s]", s.Join(" ", func(k string, v T) string {
+		return fmt.Sprintf("%s:%v", k, v)
+	}))
+}
+
 func keys[T any](m map[string]T) []string {
 	keys := make([]string, 0, len(m))
 	for k := range m {
diff --git a/sort/sort_test.go b/sort/sort_test.go
index 133f316..f5ceeae 100644
--- a/sort/sort_test.go
+++ b/sort/sort_test.go
@@ -23,6 +23,8 @@ func TestMapSortInt(t *testing.T) {
 	}
 
 	ret := SortByKey(m).Desc().Values()
+	t.Log(SortByKey(m).Desc())
+	t.Log(SortByKey(m).Asc())
 
 	t.Log(ret)
 }
@@ -33,6 +35,7 @@ func TestJoin(t *testing.T) {
 		"Abc": "abc",
 		"Efg": "efg",
 	}
+	t.Log(m)
 
 	j := SortByKey(m).Asc().Join("&", func(k string, v any) string {
 		return fmt.Sprintf("%s=%v", k, v)