use correct slice type (#21)

* use correct slice type

* add test

Author: it4rb

cache/cache_test.go

@@ -1,10 +1,11 @@
 package cache_test
 
 import (
-	"github.com/KyberNetwork/kutils/cache"
-	"github.com/stretchr/testify/require"
 	"testing"
 	"time"
+
+	"github.com/KyberNetwork/kutils/cache"
+	"github.com/stretchr/testify/require"
 )
 
 func TestCache(t *testing.T) {
@@ -70,6 +71,18 @@ func TestCache(t *testing.T) {
 			require.NoError(t, err)
 			require.Equal(t, input, result)
 		})
+		t.Run("Slice Types", func(t *testing.T) {
+			sCache := cache.NewCache(ct.config)
+			key := "sliceTest"
+			input := []*example{{Name: "pointer", Age: 25, Value: 100}}
+			err := sCache.Set(key, input, time.Minute)
+			require.NoError(t, err)
+
+			var result []*example
+			err = sCache.Get(key, &result)
+			require.NoError(t, err)
+			require.Equal(t, input, result)
+		})
 
 		t.Run("Non-existent Key", func(t *testing.T) {
 			sCache := cache.NewCache(ct.config)

cache/ristretto_cache.go

@@ -118,7 +118,7 @@ func alignTypes(target, value reflect.Value) reflect.Value {
 
 			// Handle slices within maps
 			if v.Kind() == reflect.Slice {
-				sliceType := reflect.TypeOf([]int{}) // Create the correct slice type
+				sliceType := value.Type() // Create the correct slice type
 				newSlice := reflect.MakeSlice(sliceType, v.Len(), v.Cap())
 
 				for i := 0; i < v.Len(); i++ {
@@ -138,7 +138,7 @@ func alignTypes(target, value reflect.Value) reflect.Value {
 
 	// Handle slice type conversion
 	if target.Kind() == reflect.Slice && value.Kind() == reflect.Slice {
-		sliceType := reflect.TypeOf([]int{})
+		sliceType := value.Type()
 		newSlice := reflect.MakeSlice(sliceType, value.Len(), value.Cap())
 		for i := 0; i < value.Len(); i++ {
 			elem := value.Index(i)