Remaining time estimate

Core.Tests/Utility/TimeInProgressEstimaterTests.cs

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+using System;
+using System.Linq;
+using LeafWeb.Core.Entities;
+using LeafWeb.Core.Utility;
+using Moq;
+using NUnit.Framework;
+
+namespace LeafWeb.Core.Tests.Utility
+{
+	[TestFixture]
+	public class TimeInProgressEstimaterTests
+	{
+		[Test]
+		public void EstimateTest()
+		{
+			Func<int, int> scaleFunc = i => i*i;
+
+			var obervations = 
+				from i in Enumerable.Range(1, 10)
+				let time = scaleFunc(i)
+				select Mock.Of<ILeafInput>(li =>
+					li.InputFiles.Count == i &&
+					li.TimeInProgress == TimeSpan.FromMinutes(time));
+			
+			var estimater = new TimeInProgressEstimater(obervations.ToArray());
+
+			Action<int> est = i =>
+			{
+				var query = Mock.Of<ILeafInput>(li => li.InputFiles.Count == i);
+				var estimate = estimater.EstimateTimeInProgress(query);
+				Console.WriteLine($"{i} => {estimate}.  {TimeSpan.FromMinutes(scaleFunc(i))}");
+			};
+
+			for (var i = 1; i < 30; i++)
+				est(i);
+		}
+	}
+}