Add Stochastic Oscillator implementation and validation tests

- Implemented Stochastic Oscillator (%K and %D) in Stoch.cs with streaming and batch processing capabilities. - Added validation tests for the Stochastic Oscillator in Stoch.Validation.Tests.cs, ensuring consistency with Skender.Stock.Indicators. - Created documentation for the Stochastic Oscillator in Stoch.md, detailing its mathematical formula, architecture, parameters, and common pitfalls. - Updated project file to include necessary numeric libraries for highest and lowest calculations.
2026-08-21 12:08:05 +00:00 · 2026-02-12 14:29:54 -08:00
parent 653aafacd8
commit 92709ef2ed
73 changed files with 14721 additions and 35 deletions
@@ -0,0 +1,105 @@
+using TradingPlatform.BusinessLayer;
+
+namespace QuanTAlib.Tests;
+
+public sealed class BbsIndicatorTests
+{
+    [Fact]
+    public void BbsIndicator_Constructor_SetsDefaults()
+    {
+        var indicator = new BbsIndicator();
+
+        Assert.Equal(20, indicator.BbPeriod);
+        Assert.Equal(2.0, indicator.BbMult);
+        Assert.Equal(20, indicator.KcPeriod);
+        Assert.Equal(1.5, indicator.KcMult);
+        Assert.True(indicator.ShowColdValues);
+        Assert.Equal("BBS - Bollinger Band Squeeze", indicator.Name);
+        Assert.True(indicator.SeparateWindow);
+        Assert.True(indicator.OnBackGround);
+    }
+
+    [Fact]
+    public void BbsIndicator_MinHistoryDepths_EqualsZero()
+    {
+        var indicator = new BbsIndicator { BbPeriod = 20 };
+
+        Assert.Equal(0, BbsIndicator.MinHistoryDepths);
+        IWatchlistIndicator watchlistIndicator = indicator;
+        Assert.Equal(0, watchlistIndicator.MinHistoryDepths);
+    }
+
+    [Fact]
+    public void BbsIndicator_ShortName_IncludesParameters()
+    {
+        var indicator = new BbsIndicator
+        {
+            BbPeriod = 15,
+            BbMult = 1.5,
+            KcPeriod = 10,
+            KcMult = 2.0
+        };
+        indicator.Initialize();
+
+        Assert.Contains("BBS", indicator.ShortName, StringComparison.Ordinal);
+        Assert.Contains("15", indicator.ShortName, StringComparison.Ordinal);
+        Assert.Contains("10", indicator.ShortName, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void BbsIndicator_SourceCodeLink_IsValid()
+    {
+        var indicator = new BbsIndicator();
+
+        Assert.Contains("github.com", indicator.SourceCodeLink, StringComparison.Ordinal);
+        Assert.Contains("Bbs.Quantower.cs", indicator.SourceCodeLink, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void BbsIndicator_Initialize_CreatesInternalBbs()
+    {
+        var indicator = new BbsIndicator
+        {
+            BbPeriod = 20,
+            KcPeriod = 20
+        };
+
+        indicator.Initialize();
+
+        // Should have bandwidth + squeeze dot series
+        Assert.Equal(2, indicator.LinesSeries.Count);
+    }
+
+    [Fact]
+    public void BbsIndicator_ProcessUpdate_HistoricalBar_ComputesValue()
+    {
+        var indicator = new BbsIndicator
+        {
+            BbPeriod = 5,
+            KcPeriod = 5
+        };
+        indicator.Initialize();
+
+        var now = DateTime.UtcNow;
+        for (int i = 0; i < 20; i++)
+        {
+            indicator.HistoricalData.AddBar(now.AddMinutes(i), 100 + i, 110 + i, 90 + i, 105 + i);
+
+            var args = new UpdateArgs(UpdateReason.HistoricalBar);
+            indicator.ProcessUpdate(args);
+        }
+
+        double bandwidth = indicator.LinesSeries[0].GetValue(0);
+        Assert.True(double.IsFinite(bandwidth));
+    }
+
+    [Fact]
+    public void BbsIndicator_TwoLineSeries_Exist()
+    {
+        var indicator = new BbsIndicator();
+        indicator.Initialize();
+
+        // Should have bandwidth + squeeze dot series
+        Assert.Equal(2, indicator.LinesSeries.Count);
+    }
+}