Rebase

Tests/Basics/Abstract_Test.cs

@@ -0,0 +1,23 @@
+using Xunit;
+using System;
+using QuanTAlib;
+
+namespace Basics;
+public class Abstract_Test
+{
+    [Fact]
+    public void Single_Add_variations()
+    {
+        TSeries s = new() { 1,2,3,4,5 };
+		SMA_Series a = new(s, 3)
+		{
+			{ (DateTime.Today, 10), true }
+		};
+		Assert.Equal(s.Length, a.Length);
+        a.Add(true);
+        Assert.Equal(s.Length, a.Length);
+        a.Add();
+        Assert.Equal(s.Length+1, a.Length);
+		}
+
+}