public void WhenCacheIsEmptyAndCacheItemPolicyOverrideOnUpdateWithNullThenUseDefaultPolicy()
{
// arrange
var expectedResult = "expectedResult";
var cacheKey = "key";
var defaultTimeout = 1;
var defaultPolicy = new CacheItemPolicy
{
AbsoluteExpiration = DateTime.UtcNow.AddSeconds(defaultTimeout)
};
using (var cache = new SaintModeCache())
{
var startTests = new EventWaitHandle(false, EventResetMode.ManualReset);
// act
cache.GetOrCreate(cacheKey, (key, cancel) =>
{
cancel.CacheItemPolicy = null;
startTests.Set();
return(expectedResult);
}, defaultPolicy);
// assert
startTests.WaitOne();
Thread.Sleep(defaultTimeout * 1000);
Assert.That(cache.Expired(cacheKey), Is.True);
}
}
public void WhenActiveCacheItemThenIsNotExpired()
{
// arrange
var expectedResult = "expectedResult";
var cacheKey = "key";
using (var cache = new SaintModeCache())
{
var policy = new CacheItemPolicy {
AbsoluteExpiration = ObjectCache.InfiniteAbsoluteExpiration
};
cache.GetOrCreate(cacheKey, (key, cancel) => expectedResult, policy);
// act
var result = cache.Expired(cacheKey);
// assert
Assert.That(result, Is.False);
}
}
public void WhenStaleCacheItemExistsThenCacheItemIsExpired()
{
// arrange
var expectedResult = "expectedResult";
var cacheKey = "key";
using (var cache = new SaintModeCache())
{
var policy = new CacheItemPolicy {
AbsoluteExpiration = DateTime.UtcNow.AddMilliseconds(10)
};
cache.GetOrCreate(cacheKey, (key, cancel) => expectedResult, policy);
Thread.Sleep(20);
// act
var result = cache.Expired(cacheKey);
// assert
Assert.That(result, Is.True);
}
}