Saxonite 1.2.11.8

SacsCoreUnitTests/Standard/Base/Utils/ListUtil_Tester.cs

@@ -0,0 +1,77 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Reflection;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Sarand.Net.Standard.Base.Utils;
+
+namespace Sarand.UnitTests.Core.Base.Utils
+{
+	[TestClass]
+	public class ListUtil_Tester
+	{
+		//-------------------------------------------------------------------
+		// Data members.
+
+		//-------------------------------------------------------------------
+		// Is Empty.
+		//-------------------------------------------------------------------
+		[TestMethod]
+		public void ListUtil_IsEmpty_Test()
+		{
+			List<String> values = new List<string>();
+
+			Assert.AreEqual(true, ListUtil.IsEmpty(values));
+			Assert.AreEqual(true, values.IsEmpty());
+
+			for (int i = 0; i < 10; i++)
+				values.Add(i.ToString());
+
+			Assert.AreEqual(false, ListUtil.IsEmpty(values));
+			Assert.AreEqual(false, values.IsEmpty());
+
+			values.Clear();
+
+			Assert.AreEqual(true, ListUtil.IsEmpty(values));
+			Assert.AreEqual(true, values.IsEmpty());
+		}
+
+		//-------------------------------------------------------------------
+		// Randomise.
+		//-------------------------------------------------------------------
+		[TestMethod]
+		public void ListUtil_Randomise_Test()
+		{
+			// Assume that randomising a list of 100 values highly unlikely to result in same sequence!
+			int itemsInList = 100;
+			int testsToRun = 1000;
+
+			for (int testIdx = 0; testIdx < testsToRun; testIdx++)
+			{
+				// Initialise list with sequence.
+				List<String> values = new List<string>();
+				for (int i = 0; i < itemsInList; i++)
+					values.Add(i.ToString());
+
+				for (int i = 0; i < itemsInList; i++)
+					Assert.AreEqual(i.ToString(), values[i]);
+
+				values = values.Randomise();
+				//Debug.WriteLine($"{SysUtil.Fn} Values: {values.Concat(",")}");
+
+				bool originalSequence = true;
+				for (int i = 0; i < itemsInList; i++)
+				{
+					if (values[i] != i.ToString())
+					{
+						originalSequence = false;
+						break;
+					}
+				}
+				Assert.AreEqual(false, originalSequence);
+			}
+		}
+
+		//-------------------------------------------------------------------
+	}
+}

SacsStandardBase/Base/Utils/ListUtil.cs

@@ -24,7 +24,7 @@ namespace Sarand.Net.Standard.Base.Utils
 		/// <summary>Is the list empty</summary>
 		public static Boolean IsEmpty<T>(this IEnumerable<T> items)
 		{
-			return items.Count() == 0;
+			return !items.Any();
 		}
 
 		//-------------------------------------------------------------------