Bollinger Bands® with validation tests

Tests/MovingAvg/BBANDS_Test.cs

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+using Xunit;
+using System;
+using QuanTAlib;
+
+namespace MovingAvg;
+public class BBANDS_Test
+{
+	[Fact]
+	public void Add_Test()
+	{
+		TSeries a = new() { 0, 1, 2, 3, 4, 5 };
+		BBANDS_Series c = new(a, 4,2.5);
+		Assert.Equal(6, c.Count);
+		a.Add(5);
+		Assert.Equal(a.Count, c.Count);
+		Assert.Equal(a.Count, c.Mid.Count);
+		Assert.Equal(a.Count, c.Upper.Count);
+		Assert.Equal(a.Count, c.Lower.Count);
+		Assert.Equal(a.Count, c.PercentB.Count);
+		Assert.Equal(a.Count, c.Zscore.Count);
+		Assert.Equal(a.Count, c.Bandwidth.Count);
+
+		a.Add(0, update: true);
+		Assert.Equal(a.Count, c.Count);
+		Assert.Equal(a.Count, c.Mid.Count);
+		Assert.Equal(a.Count, c.Upper.Count);
+		Assert.Equal(a.Count, c.Lower.Count);
+		Assert.Equal(a.Count, c.PercentB.Count);
+		Assert.Equal(a.Count, c.Zscore.Count);
+		Assert.Equal(a.Count, c.Bandwidth.Count);
+	}
+
+	[Fact]
+	public void Edge_Test()
+	{
+		TSeries a = new() { double.NaN, double.Epsilon, double.PositiveInfinity, double.MaxValue };
+		BBANDS_Series c = new(a, 4, 2.5);
+		Assert.Equal(a.Count, c.Count);
+		a.Add(double.NaN);
+		Assert.Equal(a.Count, c.Count);
+		Assert.Equal(a.Count, c.Mid.Count);
+		Assert.Equal(a.Count, c.Upper.Count);
+		Assert.Equal(a.Count, c.Lower.Count);
+		Assert.Equal(a.Count, c.PercentB.Count);
+		Assert.Equal(a.Count, c.Zscore.Count);
+		Assert.Equal(a.Count, c.Bandwidth.Count);
+		a.Add(double.PositiveInfinity);
+		Assert.Equal(a.Count, c.Count);
+		Assert.Equal(a.Count, c.Mid.Count);
+		Assert.Equal(a.Count, c.Upper.Count);
+		Assert.Equal(a.Count, c.Lower.Count);
+		Assert.Equal(a.Count, c.PercentB.Count);
+		Assert.Equal(a.Count, c.Zscore.Count);
+		Assert.Equal(a.Count, c.Bandwidth.Count);
+
+	}
+
+}