351     static lv_subject_t subject_pointer;  in test_observer_label_text_normal()  local
352     lv_subject_init_pointer(&subject_pointer, "HELLO");  in test_observer_label_text_normal()
353     lv_label_bind_text(obj, &subject_pointer, NULL);  in test_observer_label_text_normal()
356     lv_subject_set_pointer(&subject_pointer, "WORLD");  in test_observer_label_text_normal()
360     lv_obj_remove_from_subject(obj, &subject_pointer);  in test_observer_label_text_normal()
361     lv_subject_copy_string(&subject_pointer, "NOTHING");  in test_observer_label_text_normal()
407     static lv_subject_t subject_pointer;  in test_observer_label_text_formatted()  local
408     lv_subject_init_pointer(&subject_pointer, "HELLO");  in test_observer_label_text_formatted()
409     lv_label_bind_text(obj, &subject_pointer, "pointer: %s");  in test_observer_label_text_formatted()
412     lv_subject_set_pointer(&subject_pointer, "WORLD");  in test_observer_label_text_formatted()
416     lv_obj_remove_from_subject(obj, &subject_pointer);  in test_observer_label_text_formatted()
417     lv_subject_copy_string(&subject_pointer, "NOTHING");  in test_observer_label_text_formatted()