namespace YLErp.Modules.DataProviderModule
{
    [TestClass]
    public class EodCurrencyProviderTest
    {
        [TestMethod]
        public void TestGetCurrency()
        {
            using (var db = DbContextFactory.GetYLDbContext())
            {
                db.Database.ExecuteSqlRaw("delete from eod_currency_rate where ValueDate<='1971-01-01'");
                var rate = new eod_currency_rate
                {
                    ValueDate = new DateTime(1970, 12, 31),
                    BuyRate = 6.45,
                    ForeignCurrency = "USD",
                    LocalCurrency = "CNH",
                    OptDate = DateTime.Now,
                    OptId = 0,
                    OptName = "系统",
                    Rate = 6.45,
                    SellRate = 6.45
                };

                var rates = new eod_currency_rate[5];
                rates[0] = rate;

                for (var i = 1; i < 5; i++)
                {
                    var rate2 = rates[i - 1].Clone();
                    rate2.ValueDate = rate2.ValueDate.AddDays(-i * 2);
                    rate2.BuyRate = rate2.SellRate = rate2.Rate -= 0.1;
                    rates[i] = rate2;
                }

                db.eod_currency_rate.AddRange(rates);
                db.SaveChanges();
            }

            var provider = new EodCurrencyProvider(new DateTime(1970, 12, 31), false);
            var bl = provider.TryGetCurrencyRate("usd", "cnh", out var rr);
            Assert.IsTrue(bl);
            Assert.AreEqual(rr.Rate, 6.45);

            bl = provider.TryGetCurrencyRate("usd", "cny", out _);
            Assert.IsFalse(bl);

            provider = new EodCurrencyProvider(new DateTime(1970, 12, 24), true);
            bl = provider.TryGetCurrencyRate("usd", "cnh", out rr);
            Assert.IsTrue(bl);
            Assert.AreEqual(rr.Rate, 6.15);
        }
    }
}