Refactor TBar struct for improved equality comparison and string representation; update Benchmark program structure for better organization; modify Averages project file to include specific source files; add Directory.Build.props for common project settings; implement comprehensive tests for Ema, Sma, and Wma indicators; create mock classes for TradingPlatform.BusinessLayer to facilitate testing; enhance Quantower test project configuration for better test management.

quantower/SmaIndicator.Tests.cs

@@ -0,0 +1,136 @@
+using Xunit;
+using TradingPlatform.BusinessLayer;
+
+namespace QuanTAlib.Tests;
+
+public class SmaIndicatorTests
+{
+    [Fact]
+    public void SmaIndicator_Constructor_SetsDefaults()
+    {
+        var indicator = new SmaIndicator();
+
+        Assert.Equal(10, indicator.Period);
+        Assert.Equal(SourceType.Close, indicator.Source);
+        Assert.True(indicator.ShowColdValues);
+        Assert.Equal("SMA - Simple Moving Average", indicator.Name);
+        Assert.False(indicator.SeparateWindow);
+        Assert.True(indicator.OnBackGround);
+    }
+
+    [Fact]
+    public void SmaIndicator_MinHistoryDepths_EqualsPeriod()
+    {
+        var indicator = new SmaIndicator { Period = 20 };
+
+        Assert.Equal(20, indicator.MinHistoryDepths);
+        Assert.Equal(20, ((IWatchlistIndicator)indicator).MinHistoryDepths);
+    }
+
+    [Fact]
+    public void SmaIndicator_ShortName_IncludesPeriodAndSource()
+    {
+        var indicator = new SmaIndicator { Period = 15 };
+
+        Assert.Contains("SMA", indicator.ShortName);
+        Assert.Contains("15", indicator.ShortName);
+    }
+
+    [Fact]
+    public void SmaIndicator_SourceCodeLink_IsValid()
+    {
+        var indicator = new SmaIndicator();
+
+        Assert.Contains("github.com", indicator.SourceCodeLink);
+        Assert.Contains("Sma.Quantower.cs", indicator.SourceCodeLink);
+    }
+
+    [Fact]
+    public void SmaIndicator_Initialize_CreatesInternalSma()
+    {
+        var indicator = new SmaIndicator { Period = 10 };
+
+        // Initialize should not throw
+        indicator.Initialize();
+
+        // After init, line series should exist
+        Assert.Single(indicator.LinesSeries);
+    }
+
+    [Fact]
+    public void SmaIndicator_ProcessUpdate_HistoricalBar_ComputesValue()
+    {
+        var indicator = new SmaIndicator { Period = 3 };
+        indicator.Initialize();
+
+        // Add historical data
+        var now = DateTime.UtcNow;
+        indicator.HistoricalData.AddBar(now, 100, 105, 95, 102);
+
+        // Process update
+        var args = new UpdateArgs(UpdateReason.HistoricalBar);
+        indicator.ProcessUpdate(args);
+
+        // Line series should have a value
+        Assert.Equal(1, indicator.LinesSeries[0].Count);
+        Assert.True(double.IsFinite(indicator.LinesSeries[0].GetValue(0)));
+    }
+
+    [Fact]
+    public void SmaIndicator_MultipleUpdates_ProducesCorrectSmaSequence()
+    {
+        var indicator = new SmaIndicator { Period = 3 };
+        indicator.Initialize();
+
+        var now = DateTime.UtcNow;
+        double[] closes = { 100, 102, 104, 103, 105 };
+
+        foreach (var close in closes)
+        {
+            indicator.HistoricalData.AddBar(now, close, close + 2, close - 2, close);
+            indicator.ProcessUpdate(new UpdateArgs(UpdateReason.HistoricalBar));
+            now = now.AddMinutes(1);
+        }
+
+        // All values should be finite
+        for (int i = 0; i < closes.Length; i++)
+        {
+            Assert.True(double.IsFinite(indicator.LinesSeries[0].GetValue(closes.Length - 1 - i)));
+        }
+
+        // Last SMA(3) should be average of last 3 values: (103 + 105 + 104) / 3 ≈ 104
+        // Actually: (104 + 103 + 105) / 3 = 104
+        double lastSma = indicator.LinesSeries[0].GetValue(0);
+        Assert.True(lastSma >= 103 && lastSma <= 105);
+    }
+
+    [Fact]
+    public void SmaIndicator_DifferentSourceTypes_Work()
+    {
+        var sources = new[] { SourceType.Open, SourceType.High, SourceType.Low, SourceType.Close, SourceType.HL2, SourceType.HLC3 };
+
+        foreach (var source in sources)
+        {
+            var indicator = new SmaIndicator { Period = 3, Source = source };
+            indicator.Initialize();
+
+            var now = DateTime.UtcNow;
+            indicator.HistoricalData.AddBar(now, 100, 110, 90, 105);
+            indicator.ProcessUpdate(new UpdateArgs(UpdateReason.HistoricalBar));
+
+            Assert.True(double.IsFinite(indicator.LinesSeries[0].GetValue(0)),
+                $"Source {source} should produce finite value");
+        }
+    }
+
+    [Fact]
+    public void SmaIndicator_Period_CanBeChanged()
+    {
+        var indicator = new SmaIndicator { Period = 5 };
+        Assert.Equal(5, indicator.Period);
+
+        indicator.Period = 20;
+        Assert.Equal(20, indicator.Period);
+        Assert.Equal(20, indicator.MinHistoryDepths);
+    }
+}