public void ShouldUpdateLRUWhenGetValue()
{
var cacheSize = 3;
var cache = new FoneDynamicsCache(cacheSize);
var key1 = "1";
var value1 = "cumbia1";
var key2 = "2";
var value2 = "cumbia2";
var key4 = "4";
var value4 = "cumbia4";
cache.AddOrUpdate(key1, value1);
cache.AddOrUpdate("2", "cumbia2");
cache.AddOrUpdate("3", "cumbia3");
object resultValue = "";
cache.TryGetValue("1", out resultValue); //here it has to update key 1, so "2" should be the new LFU
cache.AddOrUpdate(key4, value4);
cache.TryGetValue(key1, out resultValue);
//check that "1" is still present in cache
Assert.AreEqual(value1, resultValue, "LRU was not updated correctly and key1 was deleted.");
//check that "2" is no longer in cache
object resultValueTwo = "";
cache.TryGetValue(key2, out resultValueTwo);
Assert.AreNotEqual(value2, resultValueTwo, "key2 was not deleted and it is equal to value2");
Assert.AreEqual(null, resultValueTwo, "key2 was not deleted and is not null");
CacheTestsHelper.AssertCacheLimit(cacheSize, cache);
}
public void ShouldReturnNullWhenTryingToGetFromEmptyCache()
{
var cacheSize = 3;
var cache = new FoneDynamicsCache(cacheSize);
object foo = new List <string>();
cache.TryGetValue("foo", out foo);
Assert.AreEqual(null, foo, "foo value is not null");
CacheTestsHelper.AssertCacheLimit(cacheSize, cache);
}
public void ShouldAdd4KeysGet1KeyAndRemoveLRU()
{
var cacheSize = 3;
var cache = new FoneDynamicsCache(cacheSize);
var keyToTest = "2";
var valueToTest = "cumbia2";
cache.AddOrUpdate("1", "cumbia1");
cache.AddOrUpdate(keyToTest, valueToTest);
cache.AddOrUpdate("3", "cumbia3");
cache.AddOrUpdate("4", "cumbia4");
object resultValue = "";
if (cache.TryGetValue(keyToTest, out resultValue))
{
Assert.AreEqual(valueToTest, resultValue);
}
CacheTestsHelper.AssertCacheLimit(cacheSize, cache);
}