Merge pull request #7 from morikuni/fix-json

Fix json

mlang.go

@@ -88,7 +88,7 @@ func (d Dict[M]) LogValue() slog.Value {
 
 // MarshalJSON implements json.Marshaler.
 func (d Dict[M]) MarshalJSON() ([]byte, error) {
-	return []byte(d.String()), nil
+	return []byte(`"` + d.String() + `"`), nil
 }
 
 func (d Dict[M]) String() string {

mlang_test.go

@@ -1,6 +1,7 @@
 package mlang_test
 
 import (
+	"encoding/json"
 	"fmt"
 	"testing"
 
@@ -58,6 +59,22 @@ func TestSetDefaultLanguage(t *testing.T) {
 	equal(t, hello("Alice").MustGet(language.Japanese), "Hello, Alice!")
 }
 
+func TestDict_MarshalJSON(t *testing.T) {
+	hello := func(name string) mlang.Message {
+		return mlang.Dict[string]{
+			language.English: fmt.Sprintf("Hello, %s!", name),
+			language.French:  fmt.Sprintf("Bonjour, %s!", name),
+		}
+	}
+
+	mlang.SetDefaultLanguage(language.English)
+	bs, err := json.Marshal(hello("Alice"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	equal(t, string(bs), `"Hello, Alice!"`)
+}
+
 func equal(t *testing.T, got, want any) {
 	t.Helper()
 	if got != want {