Files
quantconnect--lean/Tests/Indicators/TargetDownsideDeviationTests.cs
2026-07-13 13:02:50 +08:00

68 lines
2.3 KiB
C#

/*
* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using NUnit.Framework;
using QuantConnect.Indicators;
namespace QuantConnect.Tests.Indicators
{
[TestFixture]
public class TargetDownsideDeviationTests : CommonIndicatorTests<IndicatorDataPoint>
{
[Test]
public void AlwaysZeroWitNonNegativeNumbers()
{
var tdd = new TargetDownsideDeviation(3);
var reference = DateTime.MinValue;
for (var i = 0; i < 100; i++)
{
tdd.Update(reference.AddDays(i), i);
Assert.AreEqual(0m, tdd.Current.Value);
}
}
[Test]
public void ResetsProperlyTargetDownsideDeviation()
{
var tdd = new TargetDownsideDeviation(3);
tdd.Update(DateTime.Today, 1m);
tdd.Update(DateTime.Today.AddSeconds(1), 5m);
tdd.Update(DateTime.Today.AddSeconds(2), 1m);
tdd.Update(DateTime.Today.AddSeconds(2), 4m);
Assert.IsTrue(tdd.IsReady);
tdd.Reset();
TestHelper.AssertIndicatorIsInDefaultState(tdd);
}
protected override IndicatorBase<IndicatorDataPoint> CreateIndicator()
{
// Even if the indicator is ready, there may be zero values
ValueCanBeZero = true;
return new TargetDownsideDeviation(3);
}
protected override string TestFileName => "spy_tdd.csv";
protected override string TestColumnName => "tdd";
protected override Action<IndicatorBase<IndicatorDataPoint>, double> Assertion =>
(indicator, expected) =>
Assert.AreEqual(expected, (double)indicator.Current.Value, 1e-6);
}
}