From e222c441e55b6bba9a6afa824aabb424bac7cb80 Mon Sep 17 00:00:00 2001
From: Leonard Lyubich <leonard@nspcc.ru>
Date: Wed, 2 Sep 2020 14:46:43 +0300
Subject: [PATCH] [#132] v2/object: Implement stable unmarshaler on Object

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
---
 v2/object/marshal.go      | 16 ++++++++++++++++
 v2/object/marshal_test.go | 12 ++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/v2/object/marshal.go b/v2/object/marshal.go
index 79bd131..f19c54f 100644
--- a/v2/object/marshal.go
+++ b/v2/object/marshal.go
@@ -2,6 +2,7 @@ package object
 
 import (
 	"github.com/nspcc-dev/neofs-api-go/util/proto"
+	object "github.com/nspcc-dev/neofs-api-go/v2/object/grpc"
 )
 
 const (
@@ -440,6 +441,21 @@ func (o *Object) StableSize() (size int) {
 	return size
 }
 
+func (o *Object) StableUnmarshal(data []byte) error {
+	if o == nil {
+		return nil
+	}
+
+	objGRPC := new(object.Object)
+	if err := objGRPC.Unmarshal(data); err != nil {
+		return err
+	}
+
+	*o = *ObjectFromGRPCMessage(objGRPC)
+
+	return nil
+}
+
 func (r *GetRequestBody) StableMarshal(buf []byte) ([]byte, error) {
 	if r == nil {
 		return []byte{}, nil
diff --git a/v2/object/marshal_test.go b/v2/object/marshal_test.go
index 19ab6d5..04f3a39 100644
--- a/v2/object/marshal_test.go
+++ b/v2/object/marshal_test.go
@@ -688,3 +688,15 @@ func generateRangeHashResponseBody(n int) *object.GetRangeHashResponseBody {
 
 	return resp
 }
+
+func TestObject_StableUnmarshal(t *testing.T) {
+	obj := generateObject("some data")
+
+	data, err := obj.StableMarshal(nil)
+	require.NoError(t, err)
+
+	obj2 := new(object.Object)
+	require.NoError(t, obj2.StableUnmarshal(data))
+
+	require.Equal(t, obj, obj2)
+}