public void Size_3_Cache_Add_4_Get_Value_1_Should_Return_False()
{
MemoryCache <Key, Value> cache = new MemoryCache <Key, Value>(3, new KeyComparer());
cache.AddOrUpdate(new Key {
x = 1, y = 1
}, new Value {
a = 1, b = 1
});
cache.AddOrUpdate(new Key {
x = 2, y = 1
}, new Value {
a = 2, b = 1
});
cache.AddOrUpdate(new Key {
x = 3, y = 1
}, new Value {
a = 3, b = 1
});
cache.AddOrUpdate(new Key {
x = 4, y = 1
}, new Value {
a = 4, b = 1
});
Value value;
Assert.IsFalse(cache.TryGetValue(new Key {
x = 1, y = 1
}, out value));
}
public void Size_3_Cache_Add_3_Update_1_To_11_Get_Value_1_Should_Return_11()
{
MemoryCache <Key, Value> cache = new MemoryCache <Key, Value>(3, new KeyComparer());
cache.AddOrUpdate(new Key {
x = 1, y = 1
}, new Value {
a = 1, b = 1
});
cache.AddOrUpdate(new Key {
x = 2, y = 1
}, new Value {
a = 2, b = 1
});
cache.AddOrUpdate(new Key {
x = 3, y = 1
}, new Value {
a = 3, b = 1
});
cache.AddOrUpdate(new Key {
x = 1, y = 1
}, new Value {
a = 11, b = 1
});
Value value;
Assert.IsTrue(cache.TryGetValue(new Key {
x = 1, y = 1
}, out value));
Assert.AreEqual(11, value.a);
}
public void Size_2_Cache_Add_1_Update_Value_Cache_Size_Should_Be_1()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(2);
cache.AddOrUpdate(1, 1);
cache.AddOrUpdate(1, 2);
Assert.AreEqual(1, cache.CurrentSize);
}
public void MustGiveSizeOption()
{
var cache = new MemoryCache <int, string>(10);
var options = new CacheEntryOptions();
Assert.ThrowsException <ArgumentException>(() => cache.AddOrUpdate(10, "hello"));
Assert.ThrowsException <ArgumentException>(() => cache.AddOrUpdate(10, "hello", options));
}
public void Size_1_Cache_Add_2_Get_Value_1_Should_Return_False()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(1);
cache.AddOrUpdate(1, 1);
cache.AddOrUpdate(2, 2);
int value;
Assert.IsFalse(cache.TryGetValue(1, out value));
}
public void Size_1_Cache_Add_1_Update_Value_To_5_Value_Should_Be_5()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(1);
cache.AddOrUpdate(1, 1);
cache.AddOrUpdate(1, 5);
int value;
cache.TryGetValue(1, out value);
Assert.AreEqual(5, value);
}
public void Size_1_Cache_Add_2_Get_Value_2_Should_Return_2()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(1);
cache.AddOrUpdate(1, 1);
cache.AddOrUpdate(2, 2);
int value;
Assert.IsTrue(cache.TryGetValue(2, out value));
Assert.AreEqual(2, value);
}
public void Size_3_Cache_Add_4_Get_Value_4_Should_Return_True()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(3);
cache.AddOrUpdate(1, 1);
cache.AddOrUpdate(2, 2);
cache.AddOrUpdate(3, 3);
cache.AddOrUpdate(4, 4);
int value;
Assert.IsTrue(cache.TryGetValue(4, out value));
}
public void Size_3_Cache_Add_2_Update_1_To_11_Get_Value_1_Should_Return_11()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(3);
cache.AddOrUpdate(1, 1);
cache.AddOrUpdate(2, 2);
cache.AddOrUpdate(1, 11);
int value;
Assert.IsTrue(cache.TryGetValue(1, out value));
Assert.AreEqual(11, value);
}
public void Size_3_Cache_Add_4_Update_3_To_33_Get_Value_3_Should_Return_33()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(3);
cache.AddOrUpdate(1, 1);
cache.AddOrUpdate(2, 2);
cache.AddOrUpdate(3, 3);
cache.AddOrUpdate(4, 4);
cache.AddOrUpdate(3, 33);
int value;
Assert.IsTrue(cache.TryGetValue(3, out value));
Assert.AreEqual(33, value);
}
public void CanReplaceADuplicate()
{
var cache = new MemoryCache <string, string>();
cache.AddOrUpdate("abc", "def");
cache.AddOrUpdate("abc", "deef");
Assert.AreEqual(1, cache.Count);
Assert.AreEqual(0, cache.Size);
var result = cache.TryGetValue("abc", out var value);
Assert.IsTrue(result);
Assert.AreEqual("deef", value);
}
public void CanAddAnEntry()
{
var cache = new MemoryCache <string, string>();
cache.AddOrUpdate("abc", "def");
Assert.AreEqual(1, cache.Count);
}
public void Size_2_Cache_Add_2_Cache_Size_Should_Be_2()
{
MemoryCache <Key, Value> cache = new MemoryCache <Key, Value>(2, new KeyComparer());
cache.AddOrUpdate(new Key {
x = 1, y = 1
}, new Value {
a = 1, b = 1
});
cache.AddOrUpdate(new Key {
x = 2, y = 1
}, new Value {
a = 2, b = 2
});
Assert.AreEqual(2, cache.CurrentSize);
}
public void Cache_AddOrUpdate_SameKey_ShouldRenewLifetime()
{
int capacity = 5;
int itemsToInsert = 5;
int keyStart = 0;
int keyOfInterest = 1; // the specific key in the cache to test against
var memcache = new MemoryCache <int, SimpleTestClass>(capacity);
// Insert as many entries as needed
ParallelAddOrUpdateHelper <int, SimpleTestClass>(itemsToInsert, memcache, () => { return(keyStart++); }, () => { return(new SimpleTestClass()); });
// Assert that the first key added is _not_ the youngest item
// This is a poor test as who knows what order ParallelHelper inserted them.
var initalKeyAge = memcache.KeysByAge;
Assert.AreNotEqual(capacity - 1, Array.IndexOf(initalKeyAge, keyOfInterest));
// Update keyOfInterest to trigger a renew on lifetime
memcache.AddOrUpdate(keyOfInterest, new SimpleTestClass());
// Assert that the keyOfInterest is the youngest now
var updatedKeyAge = memcache.KeysByAge;
Assert.IsTrue((capacity - 2 <= Array.IndexOf(updatedKeyAge, keyOfInterest)));
}
public void Size_0_Cache_Add_1_Cache_Size_Should_Be_0()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(0);
cache.AddOrUpdate(1, 1);
Assert.AreEqual(0, cache.CurrentSize);
}
public void CacheKeepsMostRecentlyUsedItems()
{
var cache = new MemoryCache <int, string>(10);
for (int i = 0; i < 15; i++)
{
cache.AddOrUpdate(i, RandomUtils.GetInt32().ToString());
if (i == 8)
{
// Use first 3 items.
for (int k = 0; k < 3; ++k)
{
cache.TryGetValue(k, out string unused);
}
}
}
// Cache should have 0-2 & 8-14.
for (int i = 0; i < 15; i++)
{
bool success = cache.TryGetValue(i, out string unused);
if (i < 3 || i > 7)
{
Assert.True(success);
}
else
{
Assert.False(success);
}
}
Assert.Equal(10, cache.Count);
}
/// <summary>
/// This method was to used to track down an issue using Parallel.For in a test context.
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <param name="timesToRun"></param>
/// <param name="cache"></param>
/// <param name="keyFunction"></param>
/// <param name="objectToInsertFunction"></param>
/// <param name="postAction"></param>
private void DEBUG_ParallelAddOrUpdateHelperWithPostAction <TKey, TValue>(int timesToRun,
MemoryCache <TKey, TValue> cache,
Func <TKey> keyFunction,
Func <TValue> objectToInsertFunction,
Action <int> postAction
)
{
// using Parallel.For "amusingly" enough caused the cache to occasionally be in a bad state when asserting in some cases,
// discovered when trying to Assert that a cache miss _had_ happened, but the thread executing it wasn't reflective
// of the actual state of the cache.
// Technically the below code should be the same as the above, however there can be a state where the test will
// reach the stage to attempt a cache miss, and get in at a moment where the Parallel.For hasn't finished but released a lock,
// resulting in the AddOrUpdate's still running, while the test is completed.
// Using Task.WaitAll ensures that everything _is_ finished.
/*
* Parallel.For(0, timesToRun, i => {
* cache.AddOrUpdate(keyFunction(), objectToInsertFunction());
* postAction(i);
* });*/
var tasks = new List <Task>(timesToRun);
for (int i = 0; i < timesToRun; i++)
{
cache.AddOrUpdate(keyFunction(), objectToInsertFunction());
postAction(i); // Run an action, passing the current iteration to it
}
Task.WaitAll(tasks.ToArray());
}
public void CanAddAndUpdate()
{
var cache = new MemoryCache <string, string>();
var values = new List <Common.Caching.Abstract.KeyValuePair <string, string> >();
cache["key::10"] = "abc";
cache["key::50"] = "def";
cache["key::55"] = "duf";
Assert.AreEqual("abc", cache["key::10"]);
Assert.AreEqual("def", cache["key::50"]);
Assert.AreEqual("duf", cache["key::55"]);
for (var idx = 0; idx < 100; idx++)
{
var kvp = new Common.Caching.Abstract.KeyValuePair <string, string> {
Key = $"key::{idx}",
Value = $"value::{idx}"
};
values.Add(kvp);
}
cache.AddOrUpdate(values);
Assert.AreEqual("value::10", cache["key::10"]);
Assert.AreEqual("value::50", cache["key::50"]);
Assert.AreEqual("value::55", cache["key::55"]);
}
public void Cache_TryGetValue_SameKey_ShouldRenewLifetime()
{
int capacity = 5;
int itemsToInsert = 5;
int keyStart = 0;
int keyOfInterest = 1; // the specific key in the cache to test against
var memcache = new MemoryCache <int, SimpleTestClass>(capacity);
// Insert as many entries as needed
ParallelAddOrUpdateHelper <int, SimpleTestClass>(itemsToInsert, memcache, () => { return(keyStart++); }, () => { return(new SimpleTestClass()); });
// Assert that the first key added is _not_ the youngest item
// This is a poor test as who knows what order ParallelHelper inserted them.
var initalKeyAge = memcache.KeysByAge;
Assert.AreNotEqual(capacity - 1, Array.IndexOf(initalKeyAge, keyOfInterest));
// Update the keyOfInterest with a value we control
var newValue = new SimpleTestClass();
memcache.AddOrUpdate(keyOfInterest, newValue);
// Get keyOfInterest to renew its lifetime
memcache.TryGetValue(keyOfInterest, out SimpleTestClass cachedValue);
// Assert that getting the value updated its lifetime, and that the value did not change
var updatedKeyAge = memcache.KeysByAge;
Assert.AreEqual(capacity - 1, Array.IndexOf(updatedKeyAge, keyOfInterest));
Assert.AreEqual(newValue, cachedValue);
}
public void CanAddNullValue()
{
var cache = new MemoryCache <string, string>();
cache.AddOrUpdate("abc", null);
Assert.AreEqual(1, cache.Count);
Assert.AreEqual(0, cache.Size);
}
/// <summary>
/// Wrapper for Parallel.For
/// <para>
/// Calls AddOrUpdate on the given cache as many times as timesToRun, using the specified key and value generation functions.
/// </para>
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <param name="timesToRun"></param>
/// <param name="cache"></param>
/// <param name="keyFunction"></param>
/// <param name="objectToInsertFunction"></param>
private void ParallelAddOrUpdateHelper <TKey, TValue>(int timesToRun, MemoryCache <TKey, TValue> cache, Func <TKey> keyFunction, Func <TValue> objectToInsertFunction)
{
var tasks = new List <Task>(timesToRun);
for (int i = 0; i < timesToRun; i++)
{
cache.AddOrUpdate(keyFunction(), objectToInsertFunction());
}
Task.WaitAll(tasks.ToArray());
}
public DatabasePoolController()
{
cacheManager = new MemoryCache();
logger = new ApplicationInsightsLogger();
if (!cacheManager.Exist(DatabaseType.Used.GetEnumDescription()).Result)
{
cacheManager.AddOrUpdate(new List <string>(), DatabaseType.Used.GetEnumDescription());
}
if (!cacheManager.Exist(DatabaseType.Open.GetEnumDescription()).Result)
{
cacheManager.AddOrUpdate(new List <string>(), DatabaseType.Open.GetEnumDescription());
}
if (!cacheManager.Exist(DatabaseType.BeingCreated.GetEnumDescription()).Result)
{
cacheManager.AddOrUpdate(new List <string>(), DatabaseType.BeingCreated.GetEnumDescription());
}
dbOperations = new AzureDbOperations();
}
public void WillThrowOnOverflow()
{
var cache = new MemoryCache <string, string>(10);
var opts = new CacheEntryOptions {
Size = 15
};
Assert.ThrowsException <ArgumentOutOfRangeException>(() => cache.AddOrUpdate("abc", "def", opts));
Assert.AreEqual(0, cache.Count);
Assert.AreEqual(0, cache.Size);
}
public void CanUpdateSize()
{
var cache = new MemoryCache <string, string>(100);
var opts = new CacheEntryOptions {
Size = 10
};
cache.AddOrUpdate("abc", "def", opts);
Assert.AreEqual(1, cache.Count);
Assert.AreEqual(10, cache.Size);
}
public void Size_1_Cache_Add_1_Update_Value_To_5_Value_Should_Be_5()
{
MemoryCache <Key, Value> cache = new MemoryCache <Key, Value>(1, new KeyComparer());
cache.AddOrUpdate(new Key {
x = 1, y = 1
}, new Value {
a = 1, b = 1
});
cache.AddOrUpdate(new Key {
x = 1, y = 1
}, new Value {
a = 5, b = 1
});
Value value;
cache.TryGetValue(new Key {
x = 1, y = 1
}, out value);
Assert.AreEqual(5, value.a);
}
public void Size_1_Cache_Add_2_Get_Value_2_Should_Return_2()
{
MemoryCache <Key, Value> cache = new MemoryCache <Key, Value>(1, new KeyComparer());
cache.AddOrUpdate(new Key {
x = 1, y = 1
}, new Value {
a = 1, b = 1
});
cache.AddOrUpdate(new Key {
x = 2, y = 1
}, new Value {
a = 2, b = 1
});
Value value;
Assert.IsTrue(cache.TryGetValue(new Key {
x = 2, y = 1
}, out value));
Assert.AreEqual(2, value.a);
}
public void CacheDoesNotExceedMaxItemsLimit()
{
int maxItemsCount = 100;
var cache = new MemoryCache <int, string>(maxItemsCount);
for (int i = 0; i < maxItemsCount * 2; i++)
{
cache.AddOrUpdate(i, RandomUtils.GetInt32().ToString());
}
Assert.Equal(maxItemsCount, cache.Count);
}
public void Cache_AddOrUpdateOnce_And_TryGet_SimpleData()
{
int capacity = 1;
var testValue = new SimpleTestClass();
var memcache = new MemoryCache <int, SimpleTestClass>(capacity);
memcache.AddOrUpdate(1, testValue);
memcache.TryGetValue(1, out SimpleTestClass insertedValue);
Assert.AreEqual(testValue, insertedValue);
}
public void Size_3_Cache_Add_4_Update_3_To_33_Update_1_To_11_Add_5th_Get_Value_3_Add_6th_Get_5_Get_3_Update_1_To_11_Get_6_Should_Return_False()
{
MemoryCache <int, int> cache = new MemoryCache <int, int>(3);
cache.AddOrUpdate(1, 1);
cache.AddOrUpdate(2, 2);
cache.AddOrUpdate(3, 3);
cache.AddOrUpdate(4, 4);
cache.AddOrUpdate(3, 33);
cache.AddOrUpdate(1, 11);
cache.AddOrUpdate(5, 5);
int value;
cache.TryGetValue(3, out value);
cache.AddOrUpdate(6, 6);
cache.TryGetValue(5, out value);
cache.TryGetValue(3, out value);
cache.AddOrUpdate(1, 11);
Assert.IsFalse(cache.TryGetValue(6, out value));
}
public void CacheDoesNotExceedCapacity()
{
int capacity = 10;
int itemsToInsert = 100;
var memcache = new MemoryCache <int, SimpleTestClass>(capacity);
Parallel.For(0, itemsToInsert, i => {
var newEntry = new SimpleTestClass();
memcache.AddOrUpdate(i, newEntry);
});
Assert.AreEqual(10, memcache.CacheSize);
}
