New: Rebuilt Completed/Failed download handling from scratch

src/NzbDrone.Common.Test/TPLTests/DebouncerFixture.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Threading;
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Common.TPL;
+
+namespace NzbDrone.Common.Test.TPLTests
+{
+    [TestFixture]
+    public class DebouncerFixture
+    {
+        public class Counter
+        {
+            public int Count { get; private set; }
+
+            public void Hit()
+            {
+                Count++;
+            }
+        }
+
+
+        [Test]
+        public void should_hold_the_call_for_debounce_duration()
+        {
+            var counter = new Counter();
+            var debounceFunction = new Debouncer(counter.Hit, TimeSpan.FromMilliseconds(50));
+
+            debounceFunction.Execute();
+            debounceFunction.Execute();
+            debounceFunction.Execute();
+
+            counter.Count.Should().Be(0);
+
+
+            Thread.Sleep(100);
+
+            counter.Count.Should().Be(1);
+
+        }
+
+        [Test]
+        public void should_throttle_cals()
+        {
+            var counter = new Counter();
+            var debounceFunction = new Debouncer(counter.Hit, TimeSpan.FromMilliseconds(50));
+
+            debounceFunction.Execute();
+            debounceFunction.Execute();
+            debounceFunction.Execute();
+
+            counter.Count.Should().Be(0);
+
+
+            Thread.Sleep(200);
+
+            debounceFunction.Execute();
+            debounceFunction.Execute();
+            debounceFunction.Execute();
+
+            Thread.Sleep(200);
+
+            counter.Count.Should().Be(2);
+
+        }
+
+
+    }
+}