using System.Reflection;
using YLErp.DBModels;

namespace YLErp.Modules.SwapModule
{
    [TestClass]
    public class InitUnwindTradingFeeTest
    {
        private static decimal InvokeCalcInitTradingFee(swap_position position, UnwindData unwindData)
        {
            var method = typeof(SwapDealService).GetMethod(
                "CalcInitTradingFee",
                BindingFlags.NonPublic | BindingFlags.Static);

            Assert.IsNotNull(method, "未找到 CalcInitTradingFee 私有静态方法");

            return (decimal)method.Invoke(null, new object[] { position, unwindData });
        }

        [TestMethod]
        public void 百分比模式_按平仓名义本金计算并四舍五入到两位()
        {
            var position = new swap_position
            {
                PosiFeeType = 0,
                PosiTradingFeeUnit = 0.1234m
            };
            var unwindData = new UnwindData
            {
                CloseNotionalValue = 1_000_000m,
                CloseQty = 8888m
            };

            var fee = InvokeCalcInitTradingFee(position, unwindData);

            Assert.AreEqual(1234.00m, fee);
        }

        [TestMethod]
        public void 单位数量模式_按平仓数量计算并四舍五入到两位()
        {
            var position = new swap_position
            {
                PosiFeeType = 1,
                PosiTradingFeeUnit = 1.235m
            };
            var unwindData = new UnwindData
            {
                CloseNotionalValue = 1_000_000m,
                CloseQty = 10m
            };

            var fee = InvokeCalcInitTradingFee(position, unwindData);

            Assert.AreEqual(12.35m, fee);
        }

        [TestMethod]
        public void 空入参_返回零()
        {
            Assert.AreEqual(0m, InvokeCalcInitTradingFee(null, new UnwindData()));
            Assert.AreEqual(0m, InvokeCalcInitTradingFee(new swap_position(), null));
        }
    }
}