Adding some testing around updating notes

internal/repository/notes.go

@@ -20,7 +20,7 @@ func (r *NoteRepository) CreateNote(content string) (models.Note, error) {
 		return models.Note{}, fmt.Errorf("content cannot be empty")
 	}
 	note := models.Note{
-		Content: content,
+		Content:    content,
 		LastUpdate: time.Now(),
 	}
 	return r.store.SaveNote(note)
@@ -33,3 +33,7 @@ func (r *NoteRepository) GetNote(id int) (models.Note, error) {
 func (r *NoteRepository) ListNotes() ([]models.Note, error) {
 	return r.store.GetAllNotes()
 }
+
+func (r *NoteRepository) UpdateNote(id int, content string) (models.Note, error) {
+	return models.Note{}, fmt.Errorf("not implemented")
+}