Fixed: Don't purge xem scene mapping cache when new series gets added.

src/NzbDrone.Common.Test/CacheTests/CachedDictionaryFixture.cs

@@ -0,0 +1,102 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Common.Cache;
+
+namespace NzbDrone.Common.Test.CacheTests
+{
+    [TestFixture]
+    public class CachedDictionaryFixture
+    {
+        private CachedDictionary<string> _cachedString;
+        private DictionaryWorker _worker;
+
+        [SetUp]
+        public void SetUp()
+        {
+            _worker = new DictionaryWorker();
+            _cachedString = new CachedDictionary<string>(_worker.GetDict, TimeSpan.FromMilliseconds(100));
+        }
+
+        [Test]
+        public void should_not_fetch_on_create()
+        {
+            _worker.HitCount.Should().Be(0);
+        }
+
+        [Test]
+        public void should_fetch_on_first_call()
+        {
+            var result = _cachedString.Get("Hi");
+
+            _worker.HitCount.Should().Be(1);
+
+            result.Should().Be("Value");
+        }
+
+        [Test]
+        public void should_fetch_once()
+        {
+            var result1 = _cachedString.Get("Hi");
+            var result2 = _cachedString.Get("HitCount");
+
+            _worker.HitCount.Should().Be(1);
+        }
+
+        [Test]
+        public void should_auto_refresh_after_lifetime()
+        {
+            var result1 = _cachedString.Get("Hi");
+
+            Thread.Sleep(200);
+
+            var result2 = _cachedString.Get("Hi");
+
+            _worker.HitCount.Should().Be(2);
+        }
+
+        [Test]
+        public void should_refresh_early_if_requested()
+        {
+            var result1 = _cachedString.Get("Hi");
+
+            Thread.Sleep(10);
+
+            _cachedString.RefreshIfExpired(TimeSpan.FromMilliseconds(1));
+
+            var result2 = _cachedString.Get("Hi");
+
+            _worker.HitCount.Should().Be(2);
+        }
+
+        [Test]
+        public void should_not_refresh_early_if_not_expired()
+        {
+            var result1 = _cachedString.Get("Hi");
+
+            _cachedString.RefreshIfExpired(TimeSpan.FromMilliseconds(50));
+
+            var result2 = _cachedString.Get("Hi");
+
+            _worker.HitCount.Should().Be(1);
+        }
+    }
+
+    public class DictionaryWorker
+    {
+        public int HitCount { get; private set; }
+
+        public Dictionary<string, string> GetDict()
+        {
+            HitCount++;
+
+            var result = new Dictionary<string, string>();
+            result["Hi"] = "Value";
+            result["HitCount"] = "Hit count is " + HitCount;
+
+            return result;
+        }
+    }
+}

src/NzbDrone.Common.Test/NzbDrone.Common.Test.csproj

@@ -66,6 +66,7 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="CacheTests\CachedDictionaryFixture.cs" />
     <Compile Include="CacheTests\CachedFixture.cs" />
     <Compile Include="CacheTests\CachedManagerFixture.cs" />
     <Compile Include="ConfigFileProviderTest.cs" />