Fixes for verif tests

encoding/encoding.go

@@ -171,11 +171,23 @@ func (j jsonCodec) OutputPayload() *OutputPayload {
 }
 
 func (j jsonCodec) Unmarshal(data []byte, input any) (err error) {
-	return json.Unmarshal(data, &input)
+	switch input.(type) {
+	case *Void:
+		// special case; don't try and unmarshal into Void
+		return nil
+	default:
+		return json.Unmarshal(data, input)
+	}
 }
 
 func (j jsonCodec) Marshal(output any) ([]byte, error) {
-	return json.Marshal(output)
+	switch output.(type) {
+	case Void:
+		// special case; send no data
+		return nil, nil
+	default:
+		return json.Marshal(output)
+	}
 }
 
 type protoCodec struct{}

example/utils.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"math/big"
 
@@ -24,7 +25,7 @@ var bigCounter = restate.
 			}
 
 			bytes, err := restate.GetAs[[]byte](ctx, "counter", restate.WithBinary)
-			if err != nil && err != restate.ErrKeyNotFound {
+			if err != nil && !errors.Is(err, restate.ErrKeyNotFound) {
 				return "", err
 			}
 			newCount := big.NewInt(0).Add(big.NewInt(0).SetBytes(bytes), delta)

go.mod

@@ -2,6 +2,8 @@ module github.com/restatedev/sdk-go
 
 go 1.21.0
 
+toolchain go1.21.12
+
 require (
 	github.com/golang-jwt/jwt/v5 v5.2.1
 	github.com/google/uuid v1.6.0

internal/state/call.go

@@ -47,7 +47,7 @@ func (d decodingResponseFuture) Response(output any) (err error) {
 	}
 
 	if err := d.options.Codec.Unmarshal(bytes, output); err != nil {
-		return errors.NewTerminalError(fmt.Errorf("failed to unmarshal Call response into O: %w", err))
+		return errors.NewTerminalError(fmt.Errorf("failed to unmarshal Call response into output: %w", err))
 	}
 
 	return nil