Adding JSON format validation API tests

examples/formats/json/go/func.go

@@ -7,6 +7,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"strconv"
 )
 
 type Person struct {
@@ -34,7 +35,6 @@ func main() {
 		}
 		person := Person{}
 		stderr.Encode(in.Body)
-		stderr.Encode(fmt.Sprintf(in.Body))
 		if len(in.Body) != 0 {
 			if err := json.NewDecoder(bytes.NewReader([]byte(in.Body))).Decode(&person); err != nil {
 				log.Fatalf("Unable to decode Person object data: %s", err.Error())
@@ -51,9 +51,13 @@ func main() {
 			log.Fatalf("Unable to marshal JSON response body: %s", err.Error())
 			fmt.Fprintf(os.Stderr, err.Error())
 		}
+		h := http.Header{}
+		h.Set("Content-Type", "application/json")
+		h.Set("Content-Length", strconv.Itoa(len(b)))
 		out := &JSON{
 			StatusCode: http.StatusOK,
 			Body:       string(b),
+			Headers:    h,
 		}
 		stderr.Encode(out)
 		if err := stdout.Encode(out); err != nil {