public static void GetExpiredEntries_WhenCacheTimesExpired_ReturnsNonEmptyCollection()
{
var policy = new SlidingTimespanCachePolicy <string>(TimeSpan.FromSeconds(30));
var cacheEntry1 = new Mock <ICacheEntry <string> >();
cacheEntry1.Setup(k => k.CreationTime).Returns(DateTime.Now - TimeSpan.FromMinutes(2));
cacheEntry1.Setup(k => k.LastAccessed).Returns(DateTime.Now - TimeSpan.FromMinutes(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(DateTime.Now);
cacheEntry2.Setup(k => k.LastAccessed).Returns(DateTime.Now);
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(DateTime.Now - TimeSpan.FromMinutes(2));
cacheEntry3.Setup(k => k.LastAccessed).Returns(DateTime.Now - TimeSpan.FromMinutes(1));
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 }, 20).ToList();
Assert.AreEqual(2, expired.Count);
}
public static void GetExpiredEntries_WhenOnlyValueExceedsTimePeriod_ReturnsValue()
{
var policy = new SlidingTimespanCachePolicy <string>(TimeSpan.FromMilliseconds(1));
var cacheEntry = new Mock <ICacheEntry <string> >();
cacheEntry.Setup(k => k.CreationTime).Returns(DateTime.Now - TimeSpan.FromSeconds(10));
cacheEntry.Setup(k => k.LastAccessed).Returns(DateTime.Now - TimeSpan.FromSeconds(10));
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(1, expired.Count);
}
public static void GetExpiredEntries_WhenCacheNotExhausted_ReturnsEmptySet()
{
var policy = new SlidingTimespanCachePolicy <string>(TimeSpan.FromSeconds(100));
var cacheEntry = new Mock <ICacheEntry <string> >();
cacheEntry.Setup(k => k.CreationTime).Returns(DateTime.Now);
cacheEntry.Setup(k => k.LastAccessed).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_WhenCacheTimespansExpired_ReturnsLeastRecentlyAccessedValue()
{
var policy = new SlidingTimespanCachePolicy <string>(TimeSpan.FromSeconds(30));
var cacheEntry1 = new Mock <ICacheEntry <string> >();
cacheEntry1.Setup(k => k.CreationTime).Returns(DateTime.Now - TimeSpan.FromMinutes(2));
cacheEntry1.Setup(k => k.LastAccessed).Returns(DateTime.Now - TimeSpan.FromMinutes(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(DateTime.Now);
cacheEntry2.Setup(k => k.LastAccessed).Returns(DateTime.Now);
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(DateTime.Now - TimeSpan.FromMinutes(2));
cacheEntry3.Setup(k => k.LastAccessed).Returns(DateTime.Now - TimeSpan.FromMinutes(1));
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 }, 20).ToList();
Assert.AreEqual(2, expired.Count);
var firstExpiredKey = expired[0].Key;
var lastExpiredKey = expired.Last().Key;
Assert.Multiple(() =>
{
Assert.AreEqual(cacheEntry1.Object.Key, firstExpiredKey);
Assert.AreEqual(cacheEntry3.Object.Key, lastExpiredKey);
});
}
public static void GetExpiredEntries_GivenZeroSize_ThrowsArgOutOfRangeException()
{
var policy = new SlidingTimespanCachePolicy <string>(TimeSpan.FromMilliseconds(1));
Assert.Throws <ArgumentOutOfRangeException>(() => policy.GetExpiredEntries(Enumerable.Empty <ICacheEntry <string> >(), 0));
}
public static void GetExpiredEntries_GivenNullEntries_ThrowsArgNullException()
{
var policy = new SlidingTimespanCachePolicy <string>(TimeSpan.FromMilliseconds(1));
Assert.Throws <ArgumentNullException>(() => policy.GetExpiredEntries(null, 1));
}