public void TestMongoDbCacheSetTwice()
{
var cache = new MongoDbCache(
"cache1",
new MongoDbCachePolicy
{
DatabaseName = "TestCacheDb",
});
cache.ClearAll();
int misses = 0;
Func <string> getter = () => { misses++; return(misses.ToString()); };
string result;
bool wasFound;
cache.Set("key", getter());
wasFound = cache.TryGet("key", out result);
Assert.AreEqual(true, wasFound);
Assert.AreEqual("1", result);
cache.Set("key", getter());
wasFound = cache.TryGet("key", out result);
Assert.AreEqual(true, wasFound);
Assert.AreEqual("2", result);
}
public void TestMongoDbCacheStruct()
{
var cache = new MongoDbCache(
"cache1",
new MongoDbCachePolicy
{
DatabaseName = "TestCacheDb",
});
cache.ClearAll();
int misses = 0;
Func <int> getter = () => { misses++; return(misses); };
int result;
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual(1, result);
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual(1, result);
}
public void TestMongoDbCacheObjectMutated()
{
var cache = new MongoDbCache(
"cache1",
new MongoDbCachePolicy
{
DatabaseName = "TestCacheDb",
});
cache.ClearAll();
List <string> value = new List <string> {
"1"
};
Func <IEnumerable <object> > getter = () => { return(value); };
IEnumerable <object> result;
result = cache.Get("key", getter);
LinqAssert.AreSame(new object[] { "1" }, result);
value.Add("2");
result = cache.Get("key", getter);
LinqAssert.AreSame(new object[] { "1" }, result);
}
public void TestMongoDbCacheTimeToLive_Constant()
{
var ttl = 3;
int misses = 0;
string result;
var stopwatch = new Stopwatch();
Func <string> getter = () => { misses++; return(misses.ToString()); };
var expireAt = DateTime.Now.AddSeconds(ttl);
stopwatch.Start();
var cache = new MongoDbCache(
"constant-expire",
new MongoDbCachePolicy
{
DatabaseName = "TestCacheDb",
AbsoluteExpiration = expireAt,
});
cache.ClearAll();
result = cache.Get("key", getter);
DateTime insertTime = DateTime.Now;
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
CacheTestTools.AssertValueDoesntChangeWithin(cache, "key", "1", getter, stopwatch, ttl);
// Should expire within TTL+60sec from insert
CacheTestTools.AssertValueDoesChangeWithin(cache, "key", "1", getter, stopwatch, 60.1);
result = cache.Get("key", getter);
Assert.AreNotEqual(1, misses);
Assert.AreNotEqual("1", result);
}
public void TestMongoDbCacheTimeToLive_Sliding()
{
var ttl = 3;
int misses = 0;
string result;
var stopwatch = new Stopwatch();
Func <string> getter = () => { misses++; return(misses.ToString()); };
var cache = new MongoDbCache(
"sliding-expire-cache",
new MongoDbCachePolicy
{
DatabaseName = "TestCacheDb",
SlidingExpiration = TimeSpan.FromSeconds(ttl),
});
cache.ClearAll();
stopwatch.Start();
result = cache.Get("key", getter);
DateTime insertTime = DateTime.Now;
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
CacheTestTools.AssertValueDoesntChangeWithin(cache, "key", "1", getter, stopwatch, ttl + 60);
// Should expire within TTL+60sec from last access
CacheTestTools.AssertValueDoesChangeAfter(cache, "key", "1", getter, stopwatch, ttl + 60.1);
result = cache.Get("key", getter);
Assert.AreNotEqual(1, misses);
Assert.AreNotEqual("1", result);
}
public void TestMongoDbCacheGetTwice()
{
var cache = new MongoDbCache(
"cache1",
new MongoDbCachePolicy
{
DatabaseName = "TestCacheDb",
});
cache.ClearAll();
int misses = 0;
Func <string> getter = () => { misses++; return(misses.ToString()); };
string result;
result = cache.Get("key", getter);
Assert.AreEqual("1", result);
result = cache.Get("key", getter);
Assert.AreEqual("1", result);
}
public void TestMongoDbCacheTwoCaches()
{
var cache1 = new MongoDbCache(
"cache1",
new MongoDbCachePolicy
{
DatabaseName = "TestCacheDb",
});
cache1.ClearAll();
var cache2 = new MongoDbCache(
"cache2",
new MongoDbCachePolicy
{
DatabaseName = "TestCacheDb",
});
cache2.ClearAll();
int misses1 = 0;
Func <string> getter1 = () => { misses1++; return(misses1.ToString()); };
int misses2 = 0;
Func <string> getter2 = () => { misses2++; return(misses2.ToString()); };
string result;
result = cache1.Get("key1", getter1);
Assert.AreEqual(1, misses1);
Assert.AreEqual("1", result);
result = cache1.Get("key2", getter1);
Assert.AreEqual(2, misses1);
Assert.AreEqual("2", result);
result = cache2.Get("key1", getter2);
Assert.AreEqual(1, misses2);
Assert.AreEqual("1", result);
result = cache2.Get("key2", getter2);
Assert.AreEqual(2, misses2);
Assert.AreEqual("2", result);
cache1.ClearAll();
result = cache1.Get("key1", getter1);
Assert.AreEqual(3, misses1);
Assert.AreEqual("3", result);
result = cache1.Get("key2", getter1);
Assert.AreEqual(4, misses1);
Assert.AreEqual("4", result);
result = cache2.Get("key1", getter2);
Assert.AreEqual(2, misses2);
Assert.AreEqual("1", result);
result = cache2.Get("key2", getter2);
Assert.AreEqual(2, misses2);
Assert.AreEqual("2", result);
}