Improve error reporting and fix pin/set_test.go

License: MIT
Signed-off-by: Mildred Ki'Lya <mildred-pub.git@mildred.fr>

coding.go

@@ -27,7 +27,7 @@ func (n *Node) unmarshal(encoded []byte) error {
 		n.Links[i] = &Link{Name: l.GetName(), Size: l.GetTsize()}
 		h, err := mh.Cast(l.GetHash())
 		if err != nil {
-			return fmt.Errorf("Link hash is not valid multihash. %v", err)
+			return fmt.Errorf("Link hash #%d is not valid multihash. %v", i, err)
 		}
 		n.Links[i].Hash = h
 	}

merkledag.go

@@ -79,10 +79,14 @@ func (n *dagService) Get(ctx context.Context, k key.Key) (*Node, error) {
 		if err == bserv.ErrNotFound {
 			return nil, ErrNotFound
 		}
-		return nil, err
+		return nil, fmt.Errorf("Failed to get block for %s: %v", k.B58String(), err)
 	}
 
-	return DecodeProtobuf(b.Data)
+	res, err := DecodeProtobuf(b.Data)
+	if err != nil {
+		return nil, fmt.Errorf("Failed to decode Protocol Buffers: %v", err)
+	}
+	return res, nil
 }
 
 func (n *dagService) Remove(nd *Node) error {