public static void GetExpiredEntries_WhenCacheExhausted_ReturnsLeastRecentlyUsedValue()
{
var policy = new LruCachePolicy <string>();
var cacheEntry1 = new Mock <ICacheEntry <string> >();
cacheEntry1.Setup(k => k.CreationTime).Returns(new DateTime(2017, 1, 1));
cacheEntry1.Setup(k => k.LastAccessed).Returns(new DateTime(2017, 2, 1));
cacheEntry1.Setup(k => k.Size).Returns(5);
cacheEntry1.Setup(k => k.Key).Returns("test1");
var cacheEntry2 = new Mock <ICacheEntry <string> >();
cacheEntry2.Setup(k => k.CreationTime).Returns(new DateTime(2017, 1, 2));
cacheEntry2.Setup(k => k.LastAccessed).Returns(new DateTime(2017, 2, 2));
cacheEntry2.Setup(k => k.Size).Returns(5);
cacheEntry2.Setup(k => k.Key).Returns("test2");
var cacheEntry3 = new Mock <ICacheEntry <string> >();
cacheEntry3.Setup(k => k.CreationTime).Returns(new DateTime(2017, 1, 3));
cacheEntry3.Setup(k => k.LastAccessed).Returns(new DateTime(2017, 2, 3));
cacheEntry3.Setup(k => k.Size).Returns(5);
cacheEntry3.Setup(k => k.Key).Returns("test3");
var expired = policy.GetExpiredEntries(new[] { cacheEntry1.Object, cacheEntry2.Object, cacheEntry3.Object }, 12).ToList();
var expiredKey = expired.Single().Key;
Assert.AreEqual(cacheEntry1.Object.Key, expiredKey);
}
private static void Main()
{
var cacheDir = new DirectoryInfo(@"C:\Users\sjp\Downloads\tmp\cache");
var cachePolicy = new LruCachePolicy <string>();
const ulong maxSize = 1024L * 1024L * 1024L * 1024L; // 1GB
using (var diskCache = new DiskCache <string>(cacheDir, cachePolicy, maxSize))
{
diskCache.EntryAdded += (_, e) => Console.WriteLine($"Added: { e.Key }, { e.Size }");
using (var flacStream = File.OpenRead(@"C:\Users\sjp\Downloads\05. End Of Days.flac"))
diskCache.SetValue("flacFile", flacStream);
var containsTest = diskCache.ContainsKey("flacFile");
if (containsTest)
{
using (var outStr = diskCache.GetValue("flacFile"))
using (var tmpFile = File.OpenWrite(@"C:\Users\sjp\Downloads\tmp.flac"))
outStr.CopyTo(tmpFile);
}
Console.WriteLine("Press any key to exit...");
Console.ReadKey(true);
}
}
public static void GetExpiredEntries_WhenCacheExhausted_ReturnsNonEmptyCollection()
{
var policy = new LruCachePolicy <string>();
var cacheEntry1 = new Mock <ICacheEntry <string> >();
cacheEntry1.Setup(k => k.CreationTime).Returns(new DateTime(2017, 1, 1));
cacheEntry1.Setup(k => k.LastAccessed).Returns(new DateTime(2017, 2, 1));
cacheEntry1.Setup(k => k.Size).Returns(5);
cacheEntry1.Setup(k => k.Key).Returns("test1");
var cacheEntry2 = new Mock <ICacheEntry <string> >();
cacheEntry2.Setup(k => k.CreationTime).Returns(new DateTime(2017, 1, 2));
cacheEntry1.Setup(k => k.LastAccessed).Returns(new DateTime(2017, 2, 2));
cacheEntry2.Setup(k => k.Size).Returns(5);
cacheEntry2.Setup(k => k.Key).Returns("test2");
var cacheEntry3 = new Mock <ICacheEntry <string> >();
cacheEntry3.Setup(k => k.CreationTime).Returns(new DateTime(2017, 1, 3));
cacheEntry1.Setup(k => k.LastAccessed).Returns(new DateTime(2017, 2, 3));
cacheEntry3.Setup(k => k.Size).Returns(5);
cacheEntry3.Setup(k => k.Key).Returns("test3");
var expired = policy.GetExpiredEntries(new[] { cacheEntry1.Object, cacheEntry2.Object, cacheEntry3.Object }, 12).ToList();
Assert.AreEqual(1, expired.Count);
}
public static void GetExpiredEntries_WhenOnlyValueExceedsSize_ReturnsValue()
{
var policy = new LruCachePolicy <string>();
var cacheEntry = new Mock <ICacheEntry <string> >();
cacheEntry.Setup(k => k.CreationTime).Returns(DateTime.Now);
cacheEntry.Setup(k => k.Size).Returns(101);
cacheEntry.Setup(k => k.Key).Returns("test");
var expired = policy.GetExpiredEntries(new[] { cacheEntry.Object }, 100).ToList();
Assert.AreEqual(1, expired.Count);
}
public static void GetExpiredEntries_WhenCacheNotExhausted_ReturnsEmptySet()
{
var policy = new LruCachePolicy <string>();
var cacheEntry = new Mock <ICacheEntry <string> >();
cacheEntry.Setup(k => k.CreationTime).Returns(DateTime.Now);
cacheEntry.Setup(k => k.Size).Returns(1);
cacheEntry.Setup(k => k.Key).Returns("test");
var expired = policy.GetExpiredEntries(new[] { cacheEntry.Object }, 100).ToList();
Assert.AreEqual(0, expired.Count);
}
public static void GetExpiredEntries_GivenZeroSize_ThrowsArgOutOfRangeException()
{
var policy = new LruCachePolicy <string>();
Assert.Throws <ArgumentOutOfRangeException>(() => policy.GetExpiredEntries(Enumerable.Empty <ICacheEntry <string> >(), 0));
}
public static void GetExpiredEntries_GivenNullEntries_ThrowsArgNullException()
{
var policy = new LruCachePolicy <string>();
Assert.Throws <ArgumentNullException>(() => policy.GetExpiredEntries(null, 1));
}
