added new in memory cache.

NzbDrone.Common.Test/CacheTests/CachedManagerFixture.cs

@@ -0,0 +1,33 @@
+using System;
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Common.Cache;
+
+namespace NzbDrone.Common.Test.CacheTests
+{
+    [TestFixture]
+    public class CachedManagerFixture
+    {
+        [Test]
+        public void should_return_proper_type_of_cache()
+        {
+            var result = CacheManger.GetCache<DateTime>(typeof(string));
+
+            result.Should().BeOfType<Cached<DateTime>>();
+        }
+
+
+        [Test]
+        public void multiple_calls_should_get_the_same_cache()
+        {
+            var result1 = CacheManger.GetCache<DateTime>(typeof(string));
+            var result2 = CacheManger.GetCache<DateTime>(typeof(string));
+
+            result1.Should().BeSameAs(result2);
+        }
+
+
+
+
+    }
+}