Eric Wang
8717d9066c
- fields_registry: 24 business keys in acd/human1/human2 groups with
value_type, writable and SensitiveLevel metadata; strict bool/int
parsing (no bool('0') trap); INTERNAL_FIELD_KEYS protection list
- repository: SessionRepository protocol + InMemorySessionRepository
(idempotent delete; PostgreSQL swap-in is assignment 7)
- AccidentAppService: chat/set_info/get_info/delete_session share one
business state - chat injects latest repository fields into the graph
and writes back validated field diffs; set/get/delete make zero LLM
calls and zero helper conversations (includeInputInfo accepted but
unused); unknown get keys keep the '' JSON-empty-string contract,
unknown set keys are rejected by whitelist
- ChatInput.injected_fields neutral contract extension; LangGraphBackend
merges injected fields into graph input (set_info visible next chat)
- endpoints: thin layer - langgraph mode routes business state through
the app service (fastgpt mode keeps the legacy path); delete cleans
repository + graph checkpoint, idempotent
- tests: registry completeness (sfzmwh/sjwh/csbw included), app service
combos with LLM-call spy, HTTP acceptance flow (set -> get -> chat ->
groups -> delete -> no leak, idempotent re-delete)
- docs/assignment6-compat.md: behavior diff list vs FastGPT status quo
and the audit backlog (arbitrary set_info key usage, stream formUpdate
write-back, sensitive-field display boundary)
Verified: 200 unit tests (172 existing + 28 new)
193 lines
7.0 KiB
Python
193 lines
7.0 KiB
Python
"""作业 6：应用服务四接口组合测试。
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验收演示对应（计划作业 6）：
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创建会话 -> set_info 写车牌 -> get_info 读回 -> chat 使用车牌继续核实
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-> 分组读值 -> 删除 -> 再读与再次聊天均不泄漏旧数据。
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spy 断言：set_info / get_info / delete_session 全程零模型调用。
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"""
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import json
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import pytest
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from src.backends.chat import ChatResult, TextDelta, FormUpdate
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from src.services.app_service import AccidentAppService, SET_INFO_INVALID_KEY_MSG
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from src.services.repository import InMemorySessionRepository
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class SpyBackend:
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"""记录调用的 ChatBackend 替身；form_update 模拟图产出的字段差量。"""
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def __init__(self, form_update=None):
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self.calls = [] # complete 收到的 ChatInput
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self.stream_calls = []
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self._form_update = form_update or {}
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# 用调用次数当“模型调用”spy：真实 backend 每次 complete 至少一次 LLM
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self.llm_calls = 0
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async def complete(self, chat_input):
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self.calls.append(chat_input)
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self.llm_calls += 1
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return ChatResult(
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content="<state>1002</state>收到",
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status_code=None,
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form_update=dict(self._form_update),
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)
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async def stream(self, chat_input):
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self.stream_calls.append(chat_input)
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self.llm_calls += 1
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yield TextDelta("<state>1002</state>")
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if self._form_update:
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yield FormUpdate(dict(self._form_update))
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yield TextDelta("收到")
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def make_service(form_update=None):
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backend = SpyBackend(form_update=form_update)
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service = AccidentAppService(backend, InMemorySessionRepository())
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return service, backend
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# ---- set/get：白名单、分组、外部表示 ----
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def test_set_then_get_single_key_roundtrip():
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service, backend = make_service()
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code, msg = service.set_info("s1", "hphm1", "苏B12345")
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assert (code, msg) == ("200", "")
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assert json.loads(service.get_info("s1", "hphm1")) == "苏B12345"
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# set/get 零模型调用
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assert backend.llm_calls == 0
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def test_get_groups_match_existing_contract():
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service, _ = make_service()
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service.set_info("s1", "ywrysw", "0") # False
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service.set_info("s1", "jdcsl", "0") # int 0
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service.set_info("s1", "xm2", "张三")
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acd = json.loads(service.get_info("s1", "acdinfo"))
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assert acd["ywrysw"] == "0" # False -> "0"
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assert acd["jdcsl"] == "0" # int 0 -> "0"（内部类型不同）
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assert acd["sgyy"] == "" # 未知 -> 空串
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human2 = json.loads(service.get_info("s1", "acdhuman2"))
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assert human2["xm2"] == "张三"
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assert human2["sfzmwh2"] == "" # 全字段齐全，未填为空
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all_groups = json.loads(service.get_info("s1", "all"))
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assert set(all_groups) == {"acdinfo", "acdhuman1", "acdhuman2"}
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def test_get_unknown_key_returns_json_empty_string():
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"""兼容现状：未知 key 返回 JSON 空串 '""'。"""
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service, _ = make_service()
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service.set_info("s1", "hphm1", "苏B12345")
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assert service.get_info("s1", "no_such_key") == '""'
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assert service.get_info("ghost-session", "hphm1") == '""'
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def test_set_unknown_or_internal_key_rejected():
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service, backend = make_service()
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code, msg = service.set_info("s1", "no_such_key", "x")
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assert code == "500" and msg == SET_INFO_INVALID_KEY_MSG
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code, _ = service.set_info("s1", "stage_code", "1002")
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assert code == "500" # 内部字段保护
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assert service.get_info("s1", "hphm1") == '""' # 未被污染
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assert backend.llm_calls == 0
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def test_set_rejects_unparsable_value():
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service, _ = make_service()
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code, msg = service.set_info("s1", "ywrysw", "maybe")
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assert code == "500" and "无法解析" in msg
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# ---- chat：注入 + 写回 ----
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@pytest.mark.asyncio
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async def test_chat_sees_set_info_values_and_writes_back_patch():
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"""set_info 写入 -> chat 输入注入 -> 图差量写回 -> get_info 读到。"""
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service, backend = make_service(form_update={"ywrysw": False})
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service.set_info("s1", "hphm1", "苏B12345")
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service.set_info("s1", "xm2", "李四")
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result = await service.chat(
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_input("s1", "我是刚才报警的驾驶员")
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)
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assert result.content == "<state>1002</state>收到"
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# 图输入必须携带 repository 最新业务字段（车牌供核实使用）
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injected = backend.calls[0].injected_fields
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assert injected["person_fields"]["hphm1"] == "苏B12345"
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assert injected["person_fields"]["xm2"] == "李四"
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# 图产出的差量写回 repository，get_info 立即可读
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assert json.loads(service.get_info("s1", "acdinfo"))["ywrysw"] == "0"
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assert json.loads(service.get_info("s1", "hphm1")) == "苏B12345"
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@pytest.mark.asyncio
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async def test_chat_without_business_state_passes_no_injection():
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service, backend = make_service()
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await service.chat(_input("fresh-session", "你好"))
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assert backend.calls[0].injected_fields is None
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@pytest.mark.asyncio
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async def test_stream_injects_fields_and_passthrough_events():
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service, backend = make_service(form_update={"ywrysw": False})
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service.set_info("s1", "xm1", "王五")
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events = [
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event async for event in service.stream(_input("s1", "继续办理"))
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]
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kinds = [type(event).__name__ for event in events]
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assert kinds == ["TextDelta", "FormUpdate", "TextDelta"]
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assert backend.stream_calls[0].injected_fields["person_fields"]["xm1"] == "王五"
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# ---- delete：清理 + 幂等 ----
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@pytest.mark.asyncio
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async def test_delete_clears_business_state_and_is_idempotent():
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drops = []
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async def drop_checkpoint(session_id):
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drops.append(session_id)
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service, backend = make_service()
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service.set_info("s1", "hphm1", "苏B12345")
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await service.chat(_input("s1", "你好"))
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await service.delete_session("s1", drop_checkpoint=drop_checkpoint)
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assert drops == ["s1"]
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# 再读为空、再聊天不注入旧数据
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assert service.get_info("s1", "hphm1") == '""'
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await service.chat(_input("s1", "还在吗"))
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assert backend.calls[-1].injected_fields is None
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# 重复删除固定行为：成功返回；checkpoint 清理会再次触发，
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# 但缺失时静默容忍（幂等语义由 drop_checkpoint 内部保证）
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await service.delete_session("s1", drop_checkpoint=drop_checkpoint)
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assert drops == ["s1", "s1"]
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assert backend.llm_calls == 2 # 两次 chat 各一次；set/get/delete 零调用
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@pytest.mark.asyncio
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async def test_delete_tolerates_missing_checkpoint():
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async def missing(_session_id):
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raise RuntimeError("no such thread")
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service, _ = make_service()
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service.set_info("s1", "xm1", "王五")
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# checkpoint 不存在视为删除成功的一部分，不向上抛
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await service.delete_session("s1", drop_checkpoint=missing)
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assert service.get_info("s1", "xm1") == '""'
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def _input(session_id, text):
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from src.backends.chat import ChatInput
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return ChatInput(session_id=session_id, text=text, client_mode="direct")
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