--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Implab.Test/RunnableComponentTests.cs	Fri Apr 13 03:57:39 2018 +0300
@@ -0,0 +1,42 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Implab.Components;
+using Xunit;
+
+namespace Implab.Test
+{
+    class TimeLog : PollingComponent {
+        public TimeLog() : base(true) {
+        }
+
+        protected override Task Poll(CancellationToken ct) {
+            Console.WriteLine("Poll");
+            return Task.CompletedTask;
+        }
+    }
+
+    public class UnitTest1
+    {
+        [Fact]
+        public async Task Test1()
+        {
+
+            using(var  tl = new TimeLog()) {
+                tl.StateChanged += (self, args) => Console.WriteLine("{0}", args.State);
+                tl.Delay = 1000;
+                tl.Interval = 500;
+
+                
+                tl.Start(CancellationToken.None);
+                await tl.Completion;
+
+                await Task.Delay(2000);
+
+                tl.Stop(CancellationToken.None);
+                await tl.Completion;
+                await Task.Delay(3000);
+            }
+        }
+    }
+}