test(group_horse_racing): 重构模拟赛马测试以使用依赖注入

重构测试命令 `测试模拟赛马`，使用模拟依赖（内存存储、积分服务）替换真实组件，避免测试产生数据库副作用。
新增模拟类 `_FakeBot`、`_InMemoryRoomStore`、`_InMemoryPointsService` 和 `_NoopMessageService`，并临时替换模块中的全局依赖以执行完整比赛流程。
验证开赛消息、回合进度、结束结算、赛史保存及积分奖励调用的正确性，确保核心逻辑在隔离环境中正常工作。

danding_bot/plugins/group_horse_racing/test_commands.py

@@ -3,9 +3,13 @@ from nonebot.adapters.onebot.v11 import Bot, Event, GroupMessageEvent, PrivateMe
 
 from . import plugin_config as config
 from .commands import get_scope, check_access, room_store, points_service, race_engine
-from .models import Horse, HorseState, RoomState
+from .models import Horse, HorseState, RoomState, Bet, RaceResult
 
+import asyncio
 import random
+from datetime import datetime
+
+from . import commands as commands_mod
 
 
 async def check_tester(event: Event) -> bool:
@@ -132,6 +136,65 @@ def _generate_random_horse_names(count: int) -> list[str]:
 test_simulate_race_cmd = on_command("测试模拟赛马", priority=5)
 
 
+class _FakeBot:
+    def __init__(self):
+        self.messages: list[dict] = []
+        self._next_message_id = 1
+
+    async def send_msg(self, **kwargs):
+        self.messages.append(dict(kwargs))
+        message_id = str(self._next_message_id)
+        self._next_message_id += 1
+        return message_id
+
+
+class _InMemoryRoomStore:
+    def __init__(self):
+        self.rooms: dict[str, "commands_mod.Room"] = {}
+        self.saved_results: list[RaceResult] = []
+
+    def get_room(self, scope: str):
+        return self.rooms.get(scope)
+
+    def create_room(self, scope: str):
+        room = commands_mod.Room(scope=scope)
+        self.rooms[scope] = room
+        return room
+
+    def delete_room(self, scope: str):
+        if scope in self.rooms:
+            del self.rooms[scope]
+
+    def save_race_result(self, result: RaceResult):
+        self.saved_results.append(result)
+
+
+class _InMemoryPointsService:
+    def __init__(self):
+        self.calls: list[tuple[str, dict]] = []
+
+    async def reward_champion(self, user_id: str):
+        self.calls.append(("reward_champion", {"user_id": user_id}))
+        return True, 0
+
+    async def reward_participant(self, user_id: str):
+        self.calls.append(("reward_participant", {"user_id": user_id}))
+        return True, 0
+
+    async def payout_winnings(self, user_id: str, amount: int, odds: float):
+        self.calls.append(("payout_winnings", {"user_id": user_id, "amount": amount, "odds": odds}))
+        return True, 0
+
+    async def refund_bet_points(self, user_id: str, amount: int, reason: str = "比赛中断退还"):
+        self.calls.append(("refund_bet_points", {"user_id": user_id, "amount": amount, "reason": reason}))
+        return True, 0
+
+
+class _NoopMessageService:
+    def clear_pending_recalls(self, scope: str):
+        return
+
+
 @test_simulate_race_cmd.handle()
 async def handle_test_simulate_race(bot: Bot, event: Event):
     if not await check_tester(event):
@@ -144,65 +207,94 @@ async def handle_test_simulate_race(bot: Bot, event: Event):
     async with lock:
         race_engine.stop_race(scope)
         room_store.delete_room(scope)
-        room = room_store.create_room(scope)
 
+        original_room_store = commands_mod.room_store
+        original_points_service = commands_mod.points_service
+        original_message_service = commands_mod.message_service
+        original_tick_interval = commands_mod.config.RACE_TICK_INTERVAL
+
+        fake_room_store = _InMemoryRoomStore()
+        fake_points_service = _InMemoryPointsService()
+        fake_message_service = _NoopMessageService()
+        fake_bot = _FakeBot()
+
+        try:
+            commands_mod.room_store = fake_room_store
+            commands_mod.points_service = fake_points_service
+            commands_mod.message_service = fake_message_service
+            commands_mod.config.RACE_TICK_INTERVAL = 0
+
+            room = fake_room_store.create_room(scope)
             horse_names = _generate_random_horse_names(8)
             for idx, horse_name in enumerate(horse_names, start=1):
                 owner_id = f"sim_user_{idx}"
                 room.horses[horse_name] = Horse(owner_id=owner_id, name=horse_name, state=HorseState.RACING)
 
-        room.state = RoomState.RUNNING
+            bet_amount = max(commands_mod.config.MIN_BET, 10)
+            room.bets.append(Bet(user_id="bettor_1", horse_name=horse_names[0], amount=bet_amount))
+            room.bets.append(Bet(user_id="bettor_2", horse_name=horse_names[1], amount=bet_amount * 2))
 
-    progress_samples: list[str] = []
+            room.state = RoomState.WAITING
-    last_progress = ""
-    finished = []
 
-    for _ in range(1_000):
+            for horse in room.horses.values():
-        finished = race_engine.tick(room)
+                horse.state = HorseState.RACING
-        last_progress = race_engine.format_progress(room)
-        if len(progress_samples) < 3:
-            progress_samples.append(last_progress)
-        if finished:
-            break
 
-    if not finished:
+            start_task = asyncio.create_task(commands_mod.run_race_with_settlement(fake_bot, room, scope))
-        race_engine.stop_race(scope)
+            commands_mod.race_engine.register_task(scope, start_task)
-        room_store.delete_room(scope)
+            await start_task
-        await test_simulate_race_cmd.finish("模拟失败：超过最大回合仍未结束")
+
+            messages = [m.get("message", "") for m in fake_bot.messages]
+            if not messages:
+                await test_simulate_race_cmd.finish("完全模拟失败：未捕获到任何消息")
                 return
 
-    champion = race_engine.determine_champion(finished)
+            if "比赛开始！" not in messages[0]:
-    room.champion_name = champion.name
+                await test_simulate_race_cmd.finish("完全模拟失败：未发送开赛消息")
-    room.state = RoomState.FINISHED
-
-    expected_lines = 1 + len(room.horses)
-    actual_lines = len(last_progress.splitlines())
-    if actual_lines != expected_lines:
-        race_engine.stop_race(scope)
-        room_store.delete_room(scope)
-        await test_simulate_race_cmd.finish(f"模拟失败：进度渲染行数不匹配（期望{expected_lines}，实际{actual_lines}）")
                 return
 
-    missing_names = [name for name in room.horses.keys() if name not in last_progress]
+            if not any("【第" in msg and "回合】" in msg for msg in messages):
-    if missing_names:
+                await test_simulate_race_cmd.finish("完全模拟失败：未发送回合进度消息")
-        race_engine.stop_race(scope)
-        room_store.delete_room(scope)
-        await test_simulate_race_cmd.finish(f"模拟失败：进度渲染缺少马名：{', '.join(missing_names)}")
                 return
 
-    race_engine.stop_race(scope)
+            result_msg = messages[-1]
-    room_store.delete_room(scope)
+            if "比赛结束！冠军：" not in result_msg:
+                await test_simulate_race_cmd.finish("完全模拟失败：未发送结束结算消息")
+                return
+
+            if not fake_room_store.saved_results:
+                await test_simulate_race_cmd.finish("完全模拟失败：未写入赛史结果（内存）")
+                return
+
+            saved = fake_room_store.saved_results[-1]
+            if saved.champion_name not in room.horses:
+                await test_simulate_race_cmd.finish("完全模拟失败：赛史冠军不在参赛马匹中")
+                return
+
+            champion_owner_id = room.horses[saved.champion_name].owner_id
+            reward_champion_calls = [c for c in fake_points_service.calls if c[0] == "reward_champion"]
+            if not reward_champion_calls or reward_champion_calls[0][1]["user_id"] != champion_owner_id:
+                await test_simulate_race_cmd.finish("完全模拟失败：未正确发放冠军奖励（内存记录）")
+                return
+
+            participant_calls = [c for c in fake_points_service.calls if c[0] == "reward_participant"]
+            if len(participant_calls) != max(0, len(room.horses) - 1):
+                await test_simulate_race_cmd.finish("完全模拟失败：参赛奖励次数不匹配（内存记录）")
+                return
 
-    sample_block = "\n\n".join(progress_samples[-2:] + [last_progress] if len(progress_samples) >= 2 else [last_progress])
             await test_simulate_race_cmd.finish(
                 "\n".join(
                     [
-                "模拟赛马完成",
+                        "完全模拟赛马完成（无真实积分/数据库副作用）",
                         f"参赛马匹：{', '.join(horse_names)}",
-                f"冠军：{room.champion_name}",
+                        f"冠军：{saved.champion_name}（马主：{saved.champion_owner}）",
-                f"总回合：{room.tick_count}",
+                        f"总回合：{saved.duration_ticks}",
-                "进度片段：",
+                        f"消息条数：{len(messages)}（开赛/进度/结算均已覆盖）",
-                sample_block,
+                        f"结算调用：{len(fake_points_service.calls)}（冠军/参赛/下注派奖）",
                     ]
                 )
             )
+        finally:
+            commands_mod.room_store = original_room_store
+            commands_mod.points_service = original_points_service
+            commands_mod.message_service = original_message_service
+            commands_mod.config.RACE_TICK_INTERVAL = original_tick_interval