import pytest
from app.memory.store import MemoryManager


class FakeEmbeddings:
    """最小 Embeddings 桩（O-14 终裁 2026-11-08 09:1x）。

    MemoryManager.__init__(embeddings) 已将 embeddings 改为必传
    （向量版记忆，langchain_chroma.Chroma 替换已废弃 langchain.memory）。
    本桩实现 langchain Embeddings 兼容接口，返回固定 4 维向量，
    仅用于单测构造 MemoryManager，不触发真实嵌入。
    """

    def embed_documents(self, texts):
        return [[0.0, 0.1, 0.2, 0.3] for _ in texts]

    def embed_query(self, text):
        return [0.0, 0.1, 0.2, 0.3]


@pytest.mark.asyncio
async def test_memory_manager_init():
    mgr = MemoryManager(embeddings=FakeEmbeddings())
    assert mgr is not None
    assert mgr.memory_vectorstore is not None


@pytest.mark.asyncio
async def test_working_memory():
    mgr = MemoryManager(embeddings=FakeEmbeddings())
    mem = mgr.get_working_memory()
    assert mem is not None
    assert mem.memory_key == "history"


@pytest.mark.asyncio
async def test_longterm_memory():
    mgr = MemoryManager(embeddings=FakeEmbeddings())
    mem = mgr.get_longterm_memory(user_id=1)
    assert mem is not None
    assert mem.memory_key == "long_term_memory"