419 lines
13 KiB
Python
419 lines
13 KiB
Python
"""EpisodicMemory 单元测试 - 基于 pgvector + PostgreSQL 的任务经验记忆
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使用 mock session_factory 和真实 SQLAlchemy ORM 模型进行单元测试，
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不需要真实的 PostgreSQL/pgvector 环境。
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"""
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import uuid
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from contextlib import asynccontextmanager
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from datetime import datetime, timedelta, timezone
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from unittest.mock import AsyncMock, MagicMock
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import pytest
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from sqlalchemy import Column, DateTime, Float, String, delete as sql_delete, select
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from sqlalchemy.orm import DeclarativeBase
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from agentkit.memory.episodic import EpisodicMemory
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from agentkit.memory.base import MemoryItem
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# ── 真实 SQLAlchemy 模型（用于测试） ─────────────────────
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class Base(DeclarativeBase):
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pass
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class MockEpisodicModel(Base):
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"""模拟 EpisodicMemory ORM 模型，使用真实 SQLAlchemy 列定义"""
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__tablename__ = "test_episodic_memory"
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id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
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agent_name = Column(String, default="")
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task_type = Column(String, default="")
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input_summary = Column(String, default="")
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output_summary = Column(String, default="")
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outcome = Column(String, default="success")
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quality_score = Column(Float, default=0.5)
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reflection = Column(String, default="")
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embedding = Column(String, nullable=True)
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created_at = Column(DateTime, default=lambda: datetime.now(timezone.utc))
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# ── Mock 辅助工具 ────────────────────────────────────────
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def make_mock_entry(
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id: uuid.UUID | None = None,
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agent_name: str = "test_agent",
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task_type: str = "analysis",
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input_summary: str = "test input",
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output_summary: str = "test output",
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outcome: str = "success",
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quality_score: float = 0.8,
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reflection: str = "",
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created_at: datetime | None = None,
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):
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"""创建一个模拟的 ORM entry 对象（使用真实模型实例）"""
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entry = MockEpisodicModel(
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id=str(id or uuid.uuid4()),
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agent_name=agent_name,
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task_type=task_type,
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input_summary=input_summary,
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output_summary=output_summary,
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outcome=outcome,
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quality_score=quality_score,
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reflection=reflection,
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created_at=created_at or datetime.now(timezone.utc),
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)
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return entry
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def make_mock_session_factory(entries: list | None = None):
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"""创建一个 mock session_factory，返回包含指定 entries 的 session
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Args:
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entries: search 方法返回的 ORM entry 列表
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"""
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entries = entries or []
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mock_session = AsyncMock()
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mock_session.add = MagicMock()
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mock_session.commit = AsyncMock()
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mock_session.rollback = AsyncMock()
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# 模拟 execute 返回的 result 对象
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mock_result = MagicMock()
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mock_scalars = MagicMock()
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mock_scalars.all.return_value = entries
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mock_result.scalars.return_value = mock_scalars
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mock_session.execute = AsyncMock(return_value=mock_result)
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@asynccontextmanager
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async def factory():
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yield mock_session
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return factory, mock_session
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# ── EpisodicMemory 测试 ──────────────────────────────────
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class TestEpisodicMemoryStore:
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"""EpisodicMemory.store 测试"""
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async def test_store_writes_entry_with_correct_fields(self):
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"""store 写入包含正确字段的 entry"""
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factory, mock_session = make_mock_session_factory()
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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await mem.store(
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key="task:001",
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value="Analyzed financial data",
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metadata={
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"agent_name": "analyst_agent",
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"task_type": "financial_analysis",
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"output_summary": "Report generated",
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"outcome": "success",
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"quality_score": 0.9,
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"reflection": "Good analysis",
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},
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)
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mock_session.add.assert_called_once()
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mock_session.commit.assert_called_once()
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# 验证传入 add 的 entry 参数
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entry_arg = mock_session.add.call_args[0][0]
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assert isinstance(entry_arg, MockEpisodicModel)
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assert entry_arg.agent_name == "analyst_agent"
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assert entry_arg.task_type == "financial_analysis"
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assert entry_arg.input_summary == "Analyzed financial data"
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assert entry_arg.output_summary == "Report generated"
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assert entry_arg.outcome == "success"
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assert entry_arg.quality_score == 0.9
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assert entry_arg.reflection == "Good analysis"
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async def test_store_with_embedder_generates_embedding(self):
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"""store 时有 embedder 则生成 embedding"""
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factory, mock_session = make_mock_session_factory()
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mock_embedder = AsyncMock()
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mock_embedder.embed = AsyncMock(return_value=[0.1, 0.2, 0.3])
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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embedder=mock_embedder,
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)
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await mem.store("key1", "some value", {"agent_name": "test"})
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mock_embedder.embed.assert_called_once()
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call_args = mock_embedder.embed.call_args[0][0]
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assert "some value" in call_args
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# 验证 entry 的 embedding 被设置
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entry_arg = mock_session.add.call_args[0][0]
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assert entry_arg.embedding == [0.1, 0.2, 0.3]
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async def test_store_without_embedder_no_embedding(self):
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"""store 时无 embedder 则 embedding 为 None"""
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factory, mock_session = make_mock_session_factory()
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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embedder=None,
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)
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await mem.store("key1", "some value")
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entry_arg = mock_session.add.call_args[0][0]
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assert entry_arg.embedding is None
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async def test_store_rollback_on_error(self):
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"""store 失败时执行 rollback"""
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factory, mock_session = make_mock_session_factory()
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# 让 commit 抛出异常
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mock_session.commit = AsyncMock(side_effect=Exception("DB error"))
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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with pytest.raises(Exception, match="DB error"):
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await mem.store("key1", "value1")
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mock_session.rollback.assert_called_once()
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async def test_store_default_metadata_values(self):
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"""store 时 metadata 缺失字段使用默认值"""
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factory, mock_session = make_mock_session_factory()
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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await mem.store("key1", "value1")
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entry_arg = mock_session.add.call_args[0][0]
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assert entry_arg.agent_name == ""
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assert entry_arg.task_type == ""
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assert entry_arg.outcome == "success"
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assert entry_arg.quality_score == 0.5
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assert entry_arg.reflection == ""
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class TestEpisodicMemorySearch:
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"""EpisodicMemory.search 测试"""
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async def test_search_with_time_decay_recent_scores_higher(self):
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"""时间衰减：近期条目得分更高"""
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now = datetime.now(timezone.utc)
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recent_entry = make_mock_entry(
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quality_score=0.8,
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created_at=now - timedelta(hours=1),
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)
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old_entry = make_mock_entry(
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quality_score=0.8,
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created_at=now - timedelta(hours=100),
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)
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factory, _ = make_mock_session_factory([recent_entry, old_entry])
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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decay_rate=0.01,
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)
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results = await mem.search("test query")
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assert len(results) == 2
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# 近期条目应排在前面
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assert results[0].score > results[1].score
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async def test_search_with_quality_score_factor(self):
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"""quality_score 影响最终得分"""
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now = datetime.now(timezone.utc)
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high_quality = make_mock_entry(
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quality_score=0.9,
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created_at=now - timedelta(hours=1),
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)
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low_quality = make_mock_entry(
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quality_score=0.1,
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created_at=now - timedelta(hours=1),
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)
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factory, _ = make_mock_session_factory([high_quality, low_quality])
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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results = await mem.search("test query")
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assert len(results) == 2
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# 高质量条目应排在前面
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assert results[0].score > results[1].score
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async def test_search_empty_store_returns_empty(self):
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"""空存储 search 返回空列表"""
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factory, _ = make_mock_session_factory([])
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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results = await mem.search("anything")
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assert results == []
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async def test_search_applies_agent_name_filter(self):
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"""search 应用 agent_name 过滤"""
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factory, mock_session = make_mock_session_factory([])
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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await mem.search("test", filters={"agent_name": "specific_agent"})
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# 验证 execute 被调用（即查询被执行）
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mock_session.execute.assert_called_once()
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async def test_search_applies_task_type_filter(self):
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"""search 应用 task_type 过滤"""
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factory, mock_session = make_mock_session_factory([])
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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await mem.search("test", filters={"task_type": "analysis"})
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mock_session.execute.assert_called_once()
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async def test_search_applies_outcome_filter(self):
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"""search 应用 outcome 过滤"""
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factory, mock_session = make_mock_session_factory([])
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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await mem.search("test", filters={"outcome": "success"})
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mock_session.execute.assert_called_once()
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async def test_search_top_k_limits_results(self):
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"""search 的 top_k 限制返回数量"""
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now = datetime.now(timezone.utc)
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entries = [
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make_mock_entry(quality_score=0.5 + i * 0.05, created_at=now)
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for i in range(10)
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]
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factory, _ = make_mock_session_factory(entries)
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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results = await mem.search("test", top_k=3)
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assert len(results) <= 3
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async def test_search_returns_memory_items(self):
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"""search 返回 MemoryItem 列表"""
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now = datetime.now(timezone.utc)
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entry = make_mock_entry(
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agent_name="test_agent",
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task_type="analysis",
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input_summary="test input",
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output_summary="test output",
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outcome="success",
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quality_score=0.9,
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reflection="good",
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created_at=now,
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)
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factory, _ = make_mock_session_factory([entry])
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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results = await mem.search("test")
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assert len(results) == 1
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item = results[0]
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assert isinstance(item, MemoryItem)
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assert item.value["input_summary"] == "test input"
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assert item.value["output_summary"] == "test output"
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assert item.value["outcome"] == "success"
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assert item.metadata["agent_name"] == "test_agent"
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assert item.metadata["task_type"] == "analysis"
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class TestEpisodicMemoryDelete:
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"""EpisodicMemory.delete 测试"""
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async def test_delete_removes_entry_by_id(self):
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"""delete 按 ID 删除条目"""
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factory, mock_session = make_mock_session_factory()
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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test_id = str(uuid.uuid4())
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result = await mem.delete(test_id)
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assert result is True
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mock_session.execute.assert_called_once()
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mock_session.commit.assert_called_once()
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async def test_delete_returns_false_on_error(self):
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"""delete 失败时返回 False"""
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factory, mock_session = make_mock_session_factory()
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mock_session.execute = AsyncMock(side_effect=Exception("DB error"))
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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result = await mem.delete(str(uuid.uuid4()))
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assert result is False
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mock_session.rollback.assert_called_once()
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class TestEpisodicMemoryRetrieve:
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"""EpisodicMemory.retrieve 测试"""
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async def test_retrieve_always_returns_none(self):
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"""EpisodicMemory.retrieve 始终返回 None（按设计不支持 key 精确检索）"""
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factory, _ = make_mock_session_factory()
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mem = EpisodicMemory(
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session_factory=factory,
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episodic_model=MockEpisodicModel,
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)
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result = await mem.retrieve("any_key")
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assert result is None
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