QuantEngineByItz/src/dotnet/QuantEngine.Core.Tests/SellPriceSanityCheckerTests.cs

using Xunit;
using QuantEngine.Core.Domain;

namespace QuantEngine.Core.Tests
{
    public class SellPriceSanityCheckerTests
    {
        [Fact]
        public void CheckSellPriceSanity_ValidPrice_Passes()
        {
            var res = SellPriceSanityChecker.CheckSellPriceSanity(
                sellLimitPrice: 100000,
                stopLossPrice: 95000,
                prevClose: 100000,
                ticker: "005930"
            );

            Assert.Equal("PASS", res.SellPriceSanityStatus);
            Assert.True(res.HtsAllowed);
            Assert.False(res.ShadowLedger);
            Assert.Empty(res.SellPriceSanityIssues);
        }

        [Fact]
        public void CheckSellPriceSanity_PriceInversion_Fails()
        {
            // sell < stop -> inversion
            var res = SellPriceSanityChecker.CheckSellPriceSanity(
                sellLimitPrice: 90000,
                stopLossPrice: 95000,
                prevClose: 100000,
                ticker: "005930"
            );

            Assert.Equal("INVALID_PRICE_INVERSION", res.SellPriceSanityStatus);
            Assert.False(res.HtsAllowed);
            Assert.True(res.ShadowLedger);
            Assert.Contains("INVALID_PRICE_INVERSION", res.SellPriceSanityIssues[0]);
        }

        [Fact]
        public void CheckSellPriceSanity_UnrealisticPrice_Fails()
        {
            // sell > prevClose * 1.30 -> unrealistic
            var res = SellPriceSanityChecker.CheckSellPriceSanity(
                sellLimitPrice: 140000,
                stopLossPrice: 95000,
                prevClose: 100000,
                ticker: "005930"
            );

            Assert.Equal("INVALID_UNREALISTIC_PRICE", res.SellPriceSanityStatus);
            Assert.False(res.HtsAllowed);
            Assert.True(res.ShadowLedger);
            Assert.Contains("INVALID_UNREALISTIC_PRICE", res.SellPriceSanityIssues[0]);
        }

        [Fact]
        public void CheckSellPriceSanity_InvalidTick_Fails()
        {
            // 100005 % 100 != 0 (10만 원대 호가단위 100) -> invalid tick
            var res = SellPriceSanityChecker.CheckSellPriceSanity(
                sellLimitPrice: 100005,
                stopLossPrice: 95000,
                prevClose: 100000,
                ticker: "005930"
            );

            Assert.Equal("INVALID_TICK", res.SellPriceSanityStatus);
            Assert.False(res.HtsAllowed);
            Assert.True(res.ShadowLedger);
            Assert.Contains("INVALID_TICK", res.SellPriceSanityIssues[0]);
        }
    }
}