public void Get_ExpiredValue_SavesNewValueWithCorrectExpirationTime()
{
// this test extends just checking a new value is returned, it ensures the new value is stored in the dictionary for subsequent cached requests after initial expiration, this fixes a bug where the cache never stored the value after an initial expiration.
var itemLifeSpan = TimeSpan.FromMinutes(1);
var cache = new ExpiringCache <int, object>(k => null, itemLifeSpan);
var key = default(int);
var value = cache[key];
var expiredValue = cache.GetCurrentValue(key);
expiredValue.ExpiresAt = DateTime.Now.Add(-itemLifeSpan);
Expect(expiredValue.Equals(expiredValue));
Expect(expiredValue.IsExpired());
var beforeLoaded = DateTime.Now;
value = cache[key];
var afterLoaded = DateTime.Now;
var currentValue = cache.GetCurrentValue(key);
Expect(currentValue != expiredValue);
var lowerEnd = beforeLoaded.Add(itemLifeSpan);
var upperEnd = afterLoaded.Add(itemLifeSpan);
Expect(currentValue.ExpiresAt, Is.InRange(lowerEnd, upperEnd));
}
public void Get_ExpiredValue_SavesNewValueWithCorrectExpirationTime()
{
// this test extends just checking a new value is returned, it ensures the new value is stored in the dictionary for subsequent cached requests after initial expiration, this fixes a bug where the cache never stored the value after an initial expiration.
var itemLifeSpan = TimeSpan.FromMinutes(1);
var cache = new ExpiringCache<int, object>(k => null, itemLifeSpan);
var key = default(int);
var value = cache[key];
var expiredValue = cache.GetCurrentValue(key);
expiredValue.ExpiresAt = DateTime.Now.Add(-itemLifeSpan);
Expect(expiredValue.Equals(expiredValue));
Expect(expiredValue.IsExpired());
var beforeLoaded = DateTime.Now;
value = cache[key];
var afterLoaded = DateTime.Now;
var currentValue = cache.GetCurrentValue(key);
Expect(currentValue != expiredValue);
var lowerEnd = beforeLoaded.Add(itemLifeSpan);
var upperEnd = afterLoaded.Add(itemLifeSpan);
Expect(currentValue.ExpiresAt, Is.InRange(lowerEnd, upperEnd));
}