[#66] transformer: Extend tests

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

object/transformer/transformer.go

@@ -81,10 +81,10 @@ func (s *payloadSizeLimiter) initialize() {
 		// initialize parent object once (after 1st object)
 		if ln == 1 {
 			s.parent = fromObject(s.current)
-			s.parentHashers = append(s.parentHashers[:0], s.currentHashers...)
-
-			// return source attributes
+			s.parent.ResetRelations()
+			s.parent.SetSignature(nil)
 			s.parent.SetAttributes(s.parAttrs...)
+			s.parentHashers = append(s.parentHashers[:0], s.currentHashers...)
 		}
 
 		// set previous object to the last previous identifier

object/transformer/transformer_test.go

@@ -55,15 +55,28 @@ func TestTransformer(t *testing.T) {
 			require.Equal(t, h[:], cs.Value())
 		}
 
+		require.True(t, tt.objects[i].VerifyIDSignature())
 		switch i {
 		case 0, 1:
 			require.EqualValues(t, maxSize, len(payload))
+			require.Nil(t, tt.objects[i].Parent())
 		case 2:
 			require.EqualValues(t, maxSize/2, len(payload))
+			parent := tt.objects[i].Parent()
+			require.NotNil(t, parent)
+			require.Nil(t, parent.SplitID())
+			require.True(t, parent.VerifyIDSignature())
 		case 3:
 			parID, ok := tt.objects[i].ParentID()
 			require.True(t, ok)
 			require.Equal(t, ids.ParentID, &parID)
+
+			children := tt.objects[i].Children()
+			for j := 0; j < i; j++ {
+				id, ok := tt.objects[j].ID()
+				require.True(t, ok)
+				require.Equal(t, id, children[j])
+			}
 		}
 	}
 	require.Equal(t, expectedPayload, actualPayload)