public void IsExpiredTest()
{
string key = "key";
object value = "value";
var cachePolicy = new CachePolicy { AbsoluteExpiration = DateTimeOffset.Now.AddDays(1) };
var cacheItem = new CacheItem(key, value, cachePolicy);
bool hasExpiration = cacheItem.CanExpire();
Assert.AreEqual(true, hasExpiration);
bool isExpired = cacheItem.IsExpired();
Assert.AreEqual(false, isExpired);
TimeSpan expiration = TimeSpan.FromSeconds(2);
cachePolicy = new CachePolicy { SlidingExpiration = expiration };
cacheItem = new CacheItem(key, value, cachePolicy);
hasExpiration = cacheItem.CanExpire();
Assert.AreEqual(true, hasExpiration);
isExpired = cacheItem.IsExpired();
Assert.AreEqual(false, isExpired);
Thread.Sleep(expiration);
isExpired = cacheItem.IsExpired();
Assert.AreEqual(true, isExpired);
cachePolicy = new CachePolicy { AbsoluteExpiration = DateTimeOffset.Now.Add(expiration) };
cacheItem = new CacheItem(key, value, cachePolicy);
hasExpiration = cacheItem.CanExpire();
Assert.AreEqual(true, hasExpiration);
isExpired = cacheItem.IsExpired();
Assert.AreEqual(false, isExpired);
Thread.Sleep(expiration);
isExpired = cacheItem.IsExpired();
Assert.AreEqual(true, isExpired);
}
public void UpdateUsageTest()
{
string key = "key";
object value = "value";
TimeSpan expiration = TimeSpan.FromSeconds(2);
var cachePolicy = new CachePolicy { SlidingExpiration = expiration };
var cacheItem = new CacheItem(key, value, cachePolicy);
bool hasExpiration = cacheItem.CanExpire();
Assert.AreEqual(true, hasExpiration);
bool isExpired = cacheItem.IsExpired();
Assert.AreEqual(false, isExpired);
Thread.Sleep(TimeSpan.FromSeconds(1));
cacheItem.UpdateUsage();
isExpired = cacheItem.IsExpired();
Assert.AreEqual(false, isExpired);
Thread.Sleep(expiration);
isExpired = cacheItem.IsExpired();
Assert.AreEqual(true, isExpired);
cacheItem.UpdateUsage();
isExpired = cacheItem.IsExpired();
Assert.AreEqual(false, isExpired);
}
public void RaiseExpiredCallbackTest()
{
string key = "key";
object value = "value";
TimeSpan expiration = TimeSpan.FromSeconds(2);
bool expireCalled = false;
var cachePolicy = new CachePolicy
{
SlidingExpiration = expiration,
ExpiredCallback = e => { expireCalled = true; }
};
var cacheItem = new CacheItem(key, value, cachePolicy);
bool hasExpiration = cacheItem.CanExpire();
Assert.AreEqual(true, hasExpiration);
bool isExpired = cacheItem.IsExpired();
Assert.AreEqual(false, isExpired);
Thread.Sleep(expiration);
isExpired = cacheItem.IsExpired();
Assert.AreEqual(true, isExpired);
cacheItem.RaiseExpiredCallback();
Thread.Sleep(expiration);
Assert.AreEqual(true, expireCalled);
}