service.go

@@ -289,6 +289,7 @@ func (s *Service) AvailableLanguages() []string {
 	for i, tag := range s.availableLangs {
 		langs[i] = tag.String()
 	}
+	slices.Sort(langs)
 	return langs
 }
 

service_test.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"dappco.re/go/core"
+	"slices"
 )
 
 type messageBaseFallbackLoader struct{}
@@ -77,6 +78,17 @@ func TestNewService(t *testing.T) {
 	}
 }
 
+func TestServiceAvailableLanguagesSorted(t *testing.T) {
+	svc, err := NewWithLoader(messageBaseFallbackLoader{})
+	if err != nil {
+		t.Fatalf("NewWithLoader() failed: %v", err)
+	}
+
+	if got, want := svc.AvailableLanguages(), []string{"en", "en-GB", "fr"}; !slices.Equal(got, want) {
+		t.Fatalf("AvailableLanguages() = %v, want %v", got, want)
+	}
+}
+
 func TestServiceT(t *testing.T) {
 	svc, err := New()
 	if err != nil {