secondary round-trip test

codec/dagjson/roundtripBytes_test.go

@@ -40,3 +40,35 @@ func TestRoundtripBytes(t *testing.T) {
 		Wish(t, nb.Build(), ShouldEqual, byteNode)
 	})
 }
+
+var encapsulatedNode = fluent.MustBuildMap(basicnode.Prototype__Map{}, 1, func(na fluent.MapAssembler) {
+	na.AssembleEntry("/").CreateMap(1, func(sa fluent.MapAssembler) {
+		sa.AssembleEntry("bytes").AssignBytes([]byte("deadbeef"))
+	})
+})
+var encapsulatedSerial = `{
+	"/": {
+		"bytes": {
+			"/": {
+				"bytes": "ZGVhZGJlZWY="
+			}
+		}
+	}
+}
+`
+
+func TestEncapsulatedBytes(t *testing.T) {
+	t.Run("encoding", func(t *testing.T) {
+		var buf bytes.Buffer
+		err := Encode(encapsulatedNode, &buf)
+		Require(t, err, ShouldEqual, nil)
+		Wish(t, buf.String(), ShouldEqual, encapsulatedSerial)
+	})
+	t.Run("decoding", func(t *testing.T) {
+		buf := strings.NewReader(encapsulatedSerial)
+		nb := basicnode.Prototype__Map{}.NewBuilder()
+		err := Decode(nb, buf)
+		Require(t, err, ShouldEqual, nil)
+		Wish(t, nb.Build(), ShouldEqual, encapsulatedNode)
+	})
+}