update

backend/app/services/bitget_live_trading_service.py

@@ -55,7 +55,7 @@ class BitgetLiveTradingService:
         self.settings = get_settings()
         self.max_total_leverage: float = self.settings.bitget_max_total_leverage
         self.max_single_position: float = self.settings.bitget_max_single_position
-        self.circuit_breaker_drawdown: float = self.settings.hyperliquid_circuit_breaker_drawdown
+        self.circuit_breaker_drawdown: float = self.settings.account_max_drawdown
 
         self.trading_api = get_bitget_trading_api()
         if not self.trading_api:
@@ -289,12 +289,12 @@ class BitgetLiveTradingService:
                 type='market',
                 side=side,
                 amount=actual_amount,
-                params={
+                params=self.trading_api._with_account_mode_params({
                     'tdMode': 'cross',
                     'marginCoin': 'USDT',
                     'holdMode': 'oneWay',
                     **params
-                }
+                })
             )
 
             if not order:
@@ -355,7 +355,7 @@ class BitgetLiveTradingService:
                 side=side,
                 amount=actual_amount,
                 price=price,
-                params=params
+                params=self.trading_api._with_account_mode_params(params)
             )
 
             if not order:
@@ -625,9 +625,22 @@ class BitgetLiveTradingService:
         all_ok = all(r.get('success') for r in results)
         return {"success": all_ok, "results": results}
 
+    def _floor_amount(self, symbol: str, amount: float) -> float:
+        """根据交易对精度向下取整数量"""
+        try:
+            ccxt_symbol = self.trading_api._standardize_symbol(symbol)
+            market = self.trading_api.exchange.market(ccxt_symbol)
+            precision = market.get('precision', {}).get('amount')
+            if precision and precision > 0:
+                factor = 10 ** precision
+                return math.floor(amount * factor) / factor
+        except Exception:
+            pass
+        # fallback: 4 位小数
+        return math.floor(amount * 10000) / 10000
+
     def market_close_position(self, symbol: str) -> Dict[str, Any]:
         """按交易对市价平仓单个持仓"""
-        import math
 
         coin = symbol.replace('USDT', '').replace('/', '').upper()
         position = self.get_position_for_symbol(coin)
@@ -635,7 +648,7 @@ class BitgetLiveTradingService:
             return {"success": False, "coin": coin, "error": "未找到持仓"}
 
         is_long = position['size'] > 0
-        coin_amount = math.floor(abs(position['size']) * 10000) / 10000
+        coin_amount = self._floor_amount(coin + 'USDT', abs(position['size']))
         if coin_amount < 0.0001:
             logger.warning(f"{coin} 持仓过小 ({coin_amount})，跳过")
             return {"success": True, "coin": coin, "size": 0}
@@ -649,11 +662,11 @@ class BitgetLiveTradingService:
                 symbol=ccxt_symbol,
                 side=side,
                 amount=coin_amount,
-                params={
+                params=self.trading_api._with_account_mode_params({
                     'reduceOnly': True,
                     'tdMode': 'cross',
                     'marginCoin': 'USDT',
-                }
+                })
             )
             if order:
                 logger.info(f"✅ Bitget 单币种平仓成功: {coin} {side} {coin_amount}")

backend/app/services/bitget_trading_api_sdk.py

@@ -12,6 +12,7 @@ Bitget 实盘交易 API (基于 CCXT SDK)
 使用 CCXT 统一交易所接口，提供更稳定的 API 交互。
 """
 import ccxt
+import math
 from typing import Dict, List, Optional, Any
 from datetime import datetime
 from app.utils.logger import logger
@@ -23,6 +24,14 @@ class BitgetTradingAPI:
     DEFAULT_PRODUCT_TYPE = 'USDT-FUTURES'
     DEFAULT_MARGIN_COIN = 'USDT'
 
+    # 合约面值表（张 → 币数量），与 bitget_live_trading_service.CONTRACT_SIZES 保持同步
+    CONTRACT_SIZES: Dict[str, float] = {
+        'BTC': 0.01, 'ETH': 0.1, 'LTC': 0.1, 'BCH': 0.1, 'BNB': 0.1,
+        'SOL': 1.0, 'AVAX': 1.0, 'LINK': 1.0, 'UNI': 1.0, 'ATOM': 1.0,
+        'FIL': 1.0, 'DOT': 1.0, 'XRP': 10.0, 'DOGE': 100.0,
+        'MATIC': 10.0, 'POL': 10.0,
+    }
+
     @staticmethod
     def _pick_first_value(entry: Dict[str, Any], *keys: str, default: str = '0') -> str:
         """兼容 Bitget UTA 不同字段名，返回第一个非空值。"""
@@ -99,47 +108,8 @@ class BitgetTradingAPI:
             # CCXT 标准化交易对格式
             ccxt_symbol = self._standardize_symbol(symbol)
 
-            # 手动获取合约规格（不依赖 CCXT 的 contractSize）
+            # 获取合约面值
-            # Bitget 永续合约规格
+            contract_size = self._get_contract_size(symbol)
-            if 'BTC' in symbol:
-                contract_size = 0.01  # BTC 每张 0.01 BTC
-            elif 'ETH' in symbol:
-                contract_size = 0.1   # ETH 每张 0.1 ETH
-            elif 'SOL' in symbol:
-                contract_size = 1     # SOL 每张 1 SOL
-            elif 'BNB' in symbol:
-                contract_size = 0.1   # BNB 每张 0.1 BNB
-            elif 'XRP' in symbol:
-                contract_size = 10    # XRP 每张 10 XRP
-            elif 'DOGE' in symbol:
-                contract_size = 100   # DOGE 每张 100 DOGE
-            elif 'MATIC' in symbol or 'POL' in symbol:
-                contract_size = 10    # MATIC 每张 10 MATIC
-            elif 'AVAX' in symbol:
-                contract_size = 1     # AVAX 每张 1 AVAX
-            elif 'LINK' in symbol:
-                contract_size = 1     # LINK 每张 1 LINK
-            elif 'UNI' in symbol:
-                contract_size = 1     # UNI 每张 1 UNI
-            elif 'ATOM' in symbol:
-                contract_size = 1     # ATOM 每张 1 ATOM
-            elif 'LTC' in symbol:
-                contract_size = 0.1   # LTC 每张 0.1 LTC
-            elif 'BCH' in symbol:
-                contract_size = 0.1   # BCH 每张 0.1 BCH
-            elif 'FIL' in symbol:
-                contract_size = 1     # FIL 每张 1 FIL
-            elif 'DOT' in symbol:
-                contract_size = 1     # DOT 每张 1 DOT
-            else:
-                # 默认尝试从市场信息获取
-                try:
-                    market = self.exchange.market(ccxt_symbol)
-                    contract_size = market.get('contractSize', 1)
-                    logger.info(f"从市场信息获取合约规格: {contract_size}")
-                except Exception:
-                    contract_size = 1
-                    logger.warning(f"无法确定 {symbol} 的合约规格，使用默认值 1")
 
             # 计算实际下单数量（张数 × 合约规格）
             # Bitget 的 amount 参数是币的数量，不是张数
@@ -253,7 +223,7 @@ class BitgetTradingAPI:
     def close_position(self, symbol: str, side: str = None, size: float = None,
                       price: float = None) -> Optional[Dict]:
         """
-        平仓（双向持仓模式）
+        平仓（单向持仓模式）
 
         Args:
             symbol: 交易对
@@ -299,15 +269,15 @@ class BitgetTradingAPI:
                 side = 'sell' if pos_side == 'long' else 'buy'
 
             # 如果没有指定平仓数量，则全部平仓
-            # 注意：直接使用 BTC 数量，不再通过 place_order 转换
+            # 注意：直接使用币数量，不再通过 place_order 转换
             close_size_btc = size * self._get_contract_size(symbol) if size else current_size_btc
 
-            # 精度处理：向下取整到 0.0001 BTC（Bitget 最小精度）
+            # 精度处理：从市场信息动态获取精度
-            import math
+            close_size_btc = self._floor_amount(ccxt_symbol, close_size_btc)
-            close_size_btc = math.floor(close_size_btc * 10000) / 10000
 
-            if close_size_btc < 0.0001:
+            min_amount = self._get_min_amount(ccxt_symbol)
-                logger.warning(f"{symbol} 平仓数量 {close_size_btc} BTC 小于最小交易单位 0.0001 BTC")
+            if close_size_btc < min_amount:
+                logger.warning(f"{symbol} 平仓数量 {close_size_btc} 小于最小交易单位 {min_amount}")
                 return None
 
             logger.info(f"平仓: {symbol} 持仓方向={pos_side}, 平仓方向={side}, 数量={close_size_btc} BTC")
@@ -350,7 +320,9 @@ class BitgetTradingAPI:
     def set_trailing_stop(self, symbol: str, callback_rate: float = None,
                           activation_price: float = None) -> bool:
         """
-        设置移动止损
+        设置移动止损（UTA V3 兼容）
+
+        通过下一个 trailing_stop 类型的条件单来实现移动止损。
 
         Args:
             symbol: 交易对
@@ -370,26 +342,36 @@ class BitgetTradingAPI:
                 return False
 
             position = positions[0]
-            current_size = float(position.get('contracts', 0))
+            info = position.get('info', {})
+            available = float(info.get('available', 0))
 
-            if current_size == 0:
+            if available == 0:
                 logger.warning(f"{symbol} 持仓数量为 0")
                 return False
 
-            # 使用 CCXT 的私人 API 设置移动止损
+            pos_side = position.get('side', 'long')
-            # Bitget 需要通过私人API调用
+            close_side = 'sell' if pos_side == 'long' else 'buy'
-            params = {
+
-                'symbol': ccxt_symbol,
+            # 使用 CCXT 统一接口下 trailing stop 条件单
-                'trailingStopCallbackRate': callback_rate,
+            params = self._with_account_mode_params({
-            }
+                'tdMode': 'cross',
-            params = self._with_account_mode_params(params)
+                'marginCoin': 'USDT',
+                'reduceOnly': True,
+                'trailingPercent': callback_rate * 100 if callback_rate else None,  # CCXT 需要百分比
+            })
 
             if activation_price:
-                params['trailingStopActivationPrice'] = activation_price
+                params['activationPrice'] = activation_price
 
-            self.exchange.private_mix_post_modify_contract_trailing_stop(params)
+            order = self.exchange.create_order(
+                symbol=ccxt_symbol,
+                type='trailing_stop_market',
+                side=close_side,
+                amount=available,
+                params=params,
+            )
 
-            logger.info(f"✅ 设置移动止损成功: {symbol} callback={callback_rate}")
+            logger.info(f"✅ 设置移动止损成功: {symbol} callback={callback_rate}, order={order.get('id')}")
             return True
 
         except ccxt.BaseError as e:
@@ -460,13 +442,11 @@ class BitgetTradingAPI:
             # 使用独立的止损/止盈计划订单
             # 注意：这种方式需要在平仓时也取消这些计划订单
 
-            # CCXT 的 contracts 字段对于 Bitget 实际上已经是 BTC 数量
+            # CCXT 的 contracts 字段对于 Bitget 实际上已经是币数量
-            # 所以我们直接使用，不需要再乘以 contract_size
             btc_amount = abs(contracts)
 
-            # 精度处理
+            # 精度处理：使用动态精度
-            import math
+            btc_amount = self._floor_amount(ccxt_symbol, btc_amount)
-            btc_amount = math.floor(btc_amount * 10000) / 10000
 
             orders_created = []
 
@@ -899,46 +879,54 @@ class BitgetTradingAPI:
         """
         获取合约面值（每张合约对应的币数量）
 
+        优先从硬编码表获取，不存在则查询 CCXT 市场信息。
+
         Args:
             symbol: 交易对
 
         Returns:
             合约面值
         """
-        # Bitget 永续合约规格
+        # 提取纯币种名
-        if 'BTC' in symbol:
+        coin = symbol.replace('USDT', '').replace('/USDT:USDT', '').replace('/', '').upper()
-            return 0.01
+        if coin in self.CONTRACT_SIZES:
-        elif 'ETH' in symbol:
+            return self.CONTRACT_SIZES[coin]
-            return 0.1
+
-        elif 'SOL' in symbol:
+        # fallback: 从 CCXT market info 获取
-            return 1.0
+        try:
-        elif 'BNB' in symbol:
+            ccxt_symbol = self._standardize_symbol(symbol)
-            return 0.1
+            market = self.exchange.market(ccxt_symbol)
-        elif 'XRP' in symbol:
+            size = float(market.get('contractSize', 1) or 1)
-            return 10.0
+            logger.info(f"从市场信息获取合约面值: {coin} = {size}")
-        elif 'DOGE' in symbol:
+            return size
-            return 100.0
+        except Exception:
-        elif 'MATIC' in symbol or 'POL' in symbol:
+            logger.warning(f"无法获取 {coin} 合约面值，使用默认值 1")
-            return 10.0
-        elif 'AVAX' in symbol:
-            return 1.0
-        elif 'LINK' in symbol:
-            return 1.0
-        elif 'UNI' in symbol:
-            return 1.0
-        elif 'ATOM' in symbol:
-            return 1.0
-        elif 'LTC' in symbol:
-            return 0.1
-        elif 'BCH' in symbol:
-            return 0.1
-        elif 'FIL' in symbol:
-            return 1.0
-        elif 'DOT' in symbol:
-            return 1.0
-        else:
             return 1.0
 
+    def _floor_amount(self, ccxt_symbol: str, amount: float) -> float:
+        """根据交易对精度向下取整数量"""
+        try:
+            market = self.exchange.market(ccxt_symbol)
+            precision = market.get('precision', {}).get('amount')
+            if precision and precision > 0:
+                factor = 10 ** precision
+                return math.floor(amount * factor) / factor
+        except Exception:
+            pass
+        return math.floor(amount * 10000) / 10000
+
+    def _get_min_amount(self, ccxt_symbol: str) -> float:
+        """获取交易对最小下单数量"""
+        try:
+            market = self.exchange.market(ccxt_symbol)
+            limits = market.get('limits', {}).get('amount', {})
+            min_amount = limits.get('min')
+            if min_amount:
+                return float(min_amount)
+        except Exception:
+            pass
+        return 0.0001
+
     def test_connection(self) -> bool:
         """
         测试 API 连接
@@ -983,15 +971,8 @@ def get_bitget_trading_api() -> Optional[BitgetTradingAPI]:
     """
     global _trading_api
 
-    # 如果已有实例，检查它是否仍然有效
     if _trading_api:
-        try:
+        return _trading_api
-            # 尝试获取余额来验证连接是否仍然有效
-            _trading_api.get_balance()
-            return _trading_api
-        except Exception as e:
-            logger.warning(f"Bitget API 实例已失效（{e}），将重新创建")
-            _trading_api = None
 
     from app.config import get_settings
 
@@ -999,7 +980,7 @@ def get_bitget_trading_api() -> Optional[BitgetTradingAPI]:
 
     # 检查是否配置了 API Key
     if not settings.bitget_api_key or not settings.bitget_api_secret:
-        logger.warning("Bitget API Key 未配置，实盘交易功能不可用")
+        logger.warning("Bitget API Key 未配置<EFBFBD><EFBFBD>实盘交易功能不可用")
         return None
 
     # 创建实例

backend/tests/conftest.py

@@ -12,7 +12,8 @@ def _mock_settings():
     s = MagicMock()
     s.bitget_max_total_leverage = 10.0
     s.bitget_max_single_position = 1000.0
-    s.hyperliquid_circuit_breaker_drawdown = 0.10
+    s.account_max_drawdown = 0.25
+    s.hyperliquid_circuit_breaker_drawdown = 0.10  # 保留兼容性
     s.bitget_trading_enabled = False
     return s
 

backend/tests/test_bitget_balance.py

@@ -221,7 +221,7 @@ def test_uta_none_fields():
 
     balance = api.get_balance()
 
-    assert balance['USDT']['available'] == 'None'  # str(None) = 'None', float('None') → downstream handles
+    assert balance['USDT']['available'] == '0'  # _pick_first_value 对 None 返回默认值 '0'
 
 
 # ──────────────────────────────────────────────

backend/tests/test_bitget_live_trading_service.py

@@ -40,11 +40,13 @@ def make_service(settings_overrides=None):
     mock_exchange = MagicMock()
     mock_api.exchange = mock_exchange
     mock_api._standardize_symbol = lambda s: f"{s.replace('USDT', '')}/USDT:USDT"
+    mock_api._with_account_mode_params = lambda params=None: {**(params or {}), 'uta': True}
+    mock_api.use_unified_account = True
 
     mock_settings = MagicMock()
     mock_settings.bitget_max_total_leverage = 10.0
     mock_settings.bitget_max_single_position = 1000.0
-    mock_settings.hyperliquid_circuit_breaker_drawdown = 0.10
+    mock_settings.account_max_drawdown = 0.25
     if settings_overrides:
         for k, v in settings_overrides.items():
             setattr(mock_settings, k, v)
@@ -54,7 +56,7 @@ def make_service(settings_overrides=None):
     service.settings = mock_settings
     service.max_total_leverage = mock_settings.bitget_max_total_leverage
     service.max_single_position = mock_settings.bitget_max_single_position
-    service.circuit_breaker_drawdown = mock_settings.hyperliquid_circuit_breaker_drawdown
+    service.circuit_breaker_drawdown = mock_settings.account_max_drawdown
     service.trading_api = mock_api
     service.initial_balance = 10000.0
 
@@ -532,11 +534,11 @@ class TestCheckRiskLimits:
         assert result['allowed'] is True
 
     def test_circuit_breaker_triggered(self):
-        """账户余额从 10000 跌至 8900 → 回撤 11% > 10% → 熔断"""
+        """账户余额从 10000 跌至 7000 → 回撤 30% > 25% → 熔断"""
         service, mock_api = make_service()
         service.initial_balance = 10000.0
         mock_api.get_balance.return_value = {
-            'USDT': {'available': '8900.0', 'frozen': '0.0', 'locked': '0'}
+            'USDT': {'available': '7000.0', 'frozen': '0.0', 'locked': '0'}
         }
         mock_api.get_position.return_value = []
         result = service.check_risk_limits()
@@ -668,10 +670,11 @@ class TestGetBitgetLiveServiceFactory:
         mock_settings.bitget_trading_enabled = True
         mock_settings.bitget_max_total_leverage = 10.0
         mock_settings.bitget_max_single_position = 1000.0
-        mock_settings.hyperliquid_circuit_breaker_drawdown = 0.10
+        mock_settings.account_max_drawdown = 0.25
 
         mock_api = MagicMock()
         mock_api._standardize_symbol = lambda s: f"{s}/USDT:USDT"
+        mock_api._with_account_mode_params = lambda params=None: {**(params or {}), 'uta': True}
         mock_api.get_balance.return_value = {
             'USDT': {'available': '5000', 'frozen': '0', 'locked': '0'}
         }
@@ -877,3 +880,189 @@ class TestInitializeAccount:
         service._initialize_account()  # 不应抛出异常
 
         assert service.initial_balance is None
+
+
+# ==================== TestUTAParams ====================
+
+class TestUTAParams:
+    """验证所有下单/平仓方法都正确传递 UTA 参数（uta: True）"""
+
+    def test_place_market_order_passes_uta(self):
+        """place_market_order 必须传递 uta: True"""
+        service, mock_api = make_service()
+        mock_api.exchange.create_order.return_value = {'id': 'o1', 'status': 'closed'}
+        service.place_market_order('BTC', is_buy=True, size=1)
+
+        call_kwargs = mock_api.exchange.create_order.call_args[1]
+        params = call_kwargs.get('params', {})
+        assert params.get('uta') is True, f"place_market_order 缺少 uta 参数: {params}"
+
+    def test_place_market_order_uta_with_reduce_only(self):
+        """reduce_only 模式下也必须传递 uta: True"""
+        service, mock_api = make_service()
+        mock_api.exchange.create_order.return_value = {'id': 'o2', 'status': 'closed'}
+        service.place_market_order('ETH', is_buy=False, size=3, reduce_only=True)
+
+        call_kwargs = mock_api.exchange.create_order.call_args[1]
+        params = call_kwargs.get('params', {})
+        assert params.get('uta') is True
+        assert params.get('reduceOnly') is True
+
+    def test_place_limit_order_passes_uta(self):
+        """place_limit_order 必须传递 uta: True"""
+        service, mock_api = make_service()
+        mock_api.exchange.create_order.return_value = {'id': 'lim1', 'status': 'open'}
+        service.place_limit_order('BTC', is_buy=True, size=1, price=50000.0)
+
+        call_kwargs = mock_api.exchange.create_order.call_args[1]
+        params = call_kwargs.get('params', {})
+        assert params.get('uta') is True, f"place_limit_order 缺少 uta 参数: {params}"
+
+    def test_place_limit_order_uta_with_reduce_only(self):
+        """限价单 reduce_only 模式也必须传递 uta: True"""
+        service, mock_api = make_service()
+        mock_api.exchange.create_order.return_value = {'id': 'lim2', 'status': 'open'}
+        service.place_limit_order('SOL', is_buy=False, size=5, price=150.0, reduce_only=True)
+
+        call_kwargs = mock_api.exchange.create_order.call_args[1]
+        params = call_kwargs.get('params', {})
+        assert params.get('uta') is True
+        assert params.get('reduceOnly') is True
+
+    def test_market_close_position_passes_uta(self):
+        """market_close_position 必须传递 uta: True"""
+        service, mock_api = make_service()
+        # 构造持仓数据
+        mock_api.get_position.return_value = [{
+            'symbol': 'BTC/USDT:USDT',
+            'contracts': 2.0,
+            'side': 'long',
+            'entryPrice': 50000.0,
+            'unrealizedPnl': 0.0,
+            'leverage': 10,
+            'liquidationPrice': 45000.0,
+            'info': {'available': '0.02'},
+        }]
+        mock_api.exchange.create_market_order.return_value = {'id': 'close1', 'status': 'closed'}
+
+        service.market_close_position('BTC')
+
+        call_kwargs = mock_api.exchange.create_market_order.call_args[1]
+        params = call_kwargs.get('params', {})
+        assert params.get('uta') is True, f"market_close_position 缺少 uta 参数: {params}"
+        assert params.get('reduceOnly') is True
+
+    def test_place_market_order_preserves_cross_margin_params(self):
+        """确保 UTA 参数不覆盖其他必要参数"""
+        service, mock_api = make_service()
+        mock_api.exchange.create_order.return_value = {'id': 'o1', 'status': 'closed'}
+        service.place_market_order('BTC', is_buy=True, size=1)
+
+        call_kwargs = mock_api.exchange.create_order.call_args[1]
+        params = call_kwargs.get('params', {})
+        assert params.get('tdMode') == 'cross'
+        assert params.get('marginCoin') == 'USDT'
+        assert params.get('holdMode') == 'oneWay'
+        assert params.get('uta') is True
+
+
+# ==================== TestFloorAmount ====================
+
+class TestFloorAmount:
+    """测试动态精度向下取整"""
+
+    def test_floor_with_market_precision(self):
+        """从 market info 获取精度"""
+        service, mock_api = make_service()
+        mock_api.exchange.market.return_value = {
+            'precision': {'amount': 2}
+        }
+        result = service._floor_amount('BTCUSDT', 1.23456)
+        assert result == pytest.approx(1.23)
+
+    def test_floor_with_4_decimal_precision(self):
+        service, mock_api = make_service()
+        mock_api.exchange.market.return_value = {
+            'precision': {'amount': 4}
+        }
+        result = service._floor_amount('BTCUSDT', 0.12345)
+        assert result == pytest.approx(0.1234)
+
+    def test_floor_fallback_when_market_unavailable(self):
+        """market info 失败时回退到 4 位小数"""
+        service, mock_api = make_service()
+        mock_api.exchange.market.side_effect = Exception("not found")
+        result = service._floor_amount('UNKNOWN', 1.23456789)
+        assert result == pytest.approx(1.2345)
+
+    def test_floor_truncates_not_rounds(self):
+        """必须向下取整，不能四舍五入"""
+        service, mock_api = make_service()
+        mock_api.exchange.market.return_value = {
+            'precision': {'amount': 2}
+        }
+        result = service._floor_amount('BTCUSDT', 1.999)
+        assert result == pytest.approx(1.99)
+
+
+# ==================== TestSyncDefaultLeverage ====================
+
+class TestSyncDefaultLeverage:
+
+    def test_sync_multiple_symbols(self):
+        service, mock_api = make_service()
+        mock_api.set_leverage.return_value = True
+        service.settings.bitget_default_leverage = 5
+
+        result = service.sync_default_leverage(['BTCUSDT', 'ETHUSDT'], leverage=5)
+        assert result['success'] is True
+        assert result['leverage'] == 5
+        assert mock_api.set_leverage.call_count == 2
+
+    def test_sync_empty_symbols(self):
+        service, mock_api = make_service()
+        result = service.sync_default_leverage([])
+        assert result['success'] is True
+        assert result['results'] == {}
+
+    def test_sync_deduplicates_symbols(self):
+        service, mock_api = make_service()
+        mock_api.set_leverage.return_value = True
+        service.settings.bitget_default_leverage = 10
+
+        result = service.sync_default_leverage(['BTCUSDT', 'BTC', 'BTCUSDT'])
+        # BTC, BTCUSDT, BTCUSDT 去重后只有 BTC
+        assert mock_api.set_leverage.call_count == 1
+
+    def test_sync_partial_failure(self):
+        service, mock_api = make_service()
+        mock_api.set_leverage.side_effect = [True, False]
+        service.settings.bitget_default_leverage = 10
+
+        result = service.sync_default_leverage(['BTCUSDT', 'ETHUSDT'])
+        assert result['success'] is False
+
+
+# ==================== TestCancelOrder ====================
+
+class TestCancelOrder:
+
+    def test_cancel_success(self):
+        service, mock_api = make_service()
+        mock_api.cancel_order.return_value = True
+        result = service.cancel_order('BTC', 'ord123')
+        assert result['success'] is True
+        assert result['order_id'] == 'ord123'
+
+    def test_cancel_failure(self):
+        service, mock_api = make_service()
+        mock_api.cancel_order.return_value = False
+        result = service.cancel_order('BTC', 'ord456')
+        assert result['success'] is False
+
+    def test_cancel_exception(self):
+        service, mock_api = make_service()
+        mock_api.cancel_order.side_effect = Exception("order not found")
+        result = service.cancel_order('BTC', 'ord789')
+        assert result['success'] is False
+        assert 'order not found' in result['error']