from src.common.data_models.message_component_data_model import ImageComponent, MessageSequence, TextComponent
from src.llm_models.payload_content.message import RoleType
from src.maisaka.context_messages import _build_message_from_sequence


def test_image_only_message_keeps_placeholder_in_text_fallback() -> None:
    message_sequence = MessageSequence(
        [
            TextComponent("[时间]19:21:20\n[用户名]William730\n[用户群昵称]\n[msg_id]1385025976\n[发言内容]"),
            ImageComponent(binary_hash="hash", content=None, binary_data=None),
        ]
    )

    message = _build_message_from_sequence(
        RoleType.User,
        message_sequence,
        "[时间]19:21:20\n[用户名]William730\n[用户群昵称]\n[msg_id]1385025976\n[发言内容][图片]",
    )

    assert message is not None
    assert "[发言内容]" in message.get_text_content()
    assert "[图片]" in message.get_text_content()