"""大周天演化候选 prompt 构建纯函数测试。"""

from app.modules.big_cycle.prompts import (
    EvaluationSnapshot,
    build_evolution_extraction_messages,
)


def _snapshot() -> EvaluationSnapshot:
    return EvaluationSnapshot(
        character_id="character_x",
        memory_count=25,
        recent_memories=[("喜欢简洁回答", "用户偏好简洁"), ("来自北京", "用户所在地")],
        personality_summary="身份：魂镜；表达风格：温和",
        world_entity_count=3,
        conclusion="近期互动偏技术话题，表达可更简洁",
    )


def test_messages_return_system_user_pair() -> None:
    system, user = build_evolution_extraction_messages(_snapshot())
    assert isinstance(system, str) and isinstance(user, str)
    assert system and user


def test_system_describes_contract_fields() -> None:
    system, _ = build_evolution_extraction_messages(_snapshot())
    for token in (
        "type",
        "level",
        "scope",
        "proposal",
        "delta",
        "auto_apply_allowed",
    ):
        assert token in system


def test_system_lists_evolution_types() -> None:
    system, _ = build_evolution_extraction_messages(_snapshot())
    for t in ("personality", "procedural", "tool_strategy", "memory"):
        assert t in system


def test_system_states_level_semantics() -> None:
    system, _ = build_evolution_extraction_messages(_snapshot())
    assert "L4" in system


def test_user_includes_snapshot_signals() -> None:
    _, user = build_evolution_extraction_messages(_snapshot())
    assert "喜欢简洁回答" in user
    assert "身份：魂镜" in user
    assert "25" in user


def test_user_handles_empty_personality() -> None:
    snap = _snapshot()
    snap.personality_summary = ""
    _, user = build_evolution_extraction_messages(snap)
    assert isinstance(user, str)
    assert len(user) > 0