from types import SimpleNamespace


def test_karma_ranking_prefers_full_telegram_nickname(app_modules):
    identity = app_modules.load("wbb.services.member_identity")

    label = identity.user_display_name(
        SimpleNamespace(
            id=42,
            username="xiaoming",
            first_name="小明",
            last_name="同学",
        )
    )

    assert label == "小明 同学"