using Xunit;
using QuantEngine.Core.Domain;

namespace QuantEngine.Core.Tests
{
    public class KrxTickNormalizerTests
    {
        [Theory]
        [InlineData(1500, 1)]      // < 2000
        [InlineData(4500, 5)]      // < 5000
        [InlineData(15000, 10)]    // < 20000
        [InlineData(45000, 50)]    // < 50000
        [InlineData(150000, 100)]  // < 200000
        [InlineData(450000, 500)]  // < 500000
        [InlineData(1000000, 1000)]// >= 500000
        public void GetTickUnit_PriceRanges_ReturnExpectedTick(double price, int expectedTick)
        {
            int tick = KrxTickNormalizer.GetTickUnit(price);
            Assert.Equal(expectedTick, tick);
        }

        [Theory]
        [InlineData(1500.3, 1500)] // remainder = 0.3 < 0.5 -> round down
        [InlineData(1500.7, 1501)] // remainder = 0.7 >= 0.5 -> round up
        [InlineData(4502, 4500)]   // tick = 5, remainder = 2 < 2.5 -> round down
        [InlineData(4503, 4505)]   // tick = 5, remainder = 3 >= 2.5 -> round up
        public void NormalizeTick_VariousPrices_ReturnNormalizedPrice(double price, double expectedNormalized)
        {
            double res = KrxTickNormalizer.NormalizeTick(price);
            Assert.Equal(expectedNormalized, res);
        }
    }
}