public void ItemAddedPreviousToFailedAddIsRemovedCompletelyIfSecondAddFails()
{
TestConfigurationContext context = new TestConfigurationContext();
using (IsolatedStorageBackingStore backingStore = new IsolatedStorageBackingStore("foo"))
{
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", new CachingConfigurationView(context));
Cache cache = new Cache(backingStore, scavengingPolicy);
cache.Initialize(this);
cache.Add("my", new SerializableClass());
try
{
cache.Add("my", new NonSerializableClass());
Assert.Fail("Should have thrown exception internally to Cache.Add");
}
catch (Exception)
{
Assert.IsFalse(cache.Contains("my"));
Assert.AreEqual(0, backingStore.Count);
Hashtable isolatedStorageContents = backingStore.Load();
Assert.AreEqual(0, isolatedStorageContents.Count);
}
}
}
public void WillScavenge()
{
CacheItem item1 = new CacheItem("key1", "value1", CacheItemPriority.NotRemovable, null);
CacheItem item2 = new CacheItem("key2", "value2", CacheItemPriority.High, null);
CacheItem item3 = new CacheItem("key3", "value3", CacheItemPriority.Normal, null);
CacheItem item4 = new CacheItem("key4", "value4", CacheItemPriority.Low, null);
AddCacheItem("key1", item1);
AddCacheItem("key2", item2);
AddCacheItem("key3", item3);
AddCacheItem("key4", item4);
TestConfigurationContext context = new TestConfigurationContext();
CachingConfigurationView view = new CachingConfigurationView(context);
view.GetCacheManagerSettings().CacheManagers["test"].MaximumElementsInCacheBeforeScavenging = 1;
view.GetCacheManagerSettings().CacheManagers["test"].NumberToRemoveWhenScavenging = 2;
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", view);
ScavengerTask scavenger = new ScavengerTask("test", view, scavengingPolicy, this);
scavenger.DoScavenging();
Assert.AreEqual("key4key3", scavengedKeys);
}
public void WillRemoveMultipleEligibleForScavenging()
{
TestConfigurationContext context = new TestConfigurationContext();
CachingConfigurationView view = new CachingConfigurationView(context);
view.GetCacheManagerSettings().CacheManagers["test"].MaximumElementsInCacheBeforeScavenging = 2;
view.GetCacheManagerSettings().CacheManagers["test"].NumberToRemoveWhenScavenging = 3;
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", view);
ScavengerTask scavenger = new ScavengerTask("test", view, scavengingPolicy, this);
CacheItem itemToRemove = new CacheItem("key1", "value", CacheItemPriority.High, null);
CacheItem itemToRemain = new CacheItem("key2", "value", CacheItemPriority.Low, null);
CacheItem itemToRemoveAlso = new CacheItem("key3", "value", CacheItemPriority.Normal, null);
itemToRemove.MakeEligibleForScavenging();
itemToRemain.MakeEligibleForScavenging();
itemToRemoveAlso.MakeEligibleForScavenging();
AddCacheItem("key1", itemToRemove);
AddCacheItem("key2", itemToRemain);
AddCacheItem("key3", itemToRemoveAlso);
scavenger.DoScavenging();
Assert.AreEqual("key2key3key1", scavengedKeys);
}
public void CanScavengeInBackground()
{
CacheItem item1 = new CacheItem("key1", "value1", CacheItemPriority.Low, null);
CacheItem item2 = new CacheItem("key2", "value2", CacheItemPriority.Normal, null);
CacheItem item3 = new CacheItem("key3", "value3", CacheItemPriority.High, null);
AddCacheItem("key1", item1);
AddCacheItem("key2", item2);
AddCacheItem("key3", item3);
TestConfigurationContext context = new TestConfigurationContext();
CachingConfigurationView view = new CachingConfigurationView(context);
view.GetCacheManagerSettings().CacheManagers["test"].MaximumElementsInCacheBeforeScavenging = 2;
view.GetCacheManagerSettings().CacheManagers["test"].NumberToRemoveWhenScavenging = 1;
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", view);
ScavengerTask scavenger = new ScavengerTask("test", view, scavengingPolicy, this);
BackgroundScheduler scheduler = new BackgroundScheduler(null, scavenger);
scheduler.Start();
Thread.Sleep(500);
scheduler.StartScavenging();
Thread.Sleep(250);
scheduler.Stop();
Thread.Sleep(250);
Assert.AreEqual("key1", scavengedKeys);
}
public void CanScavengeInBackground()
{
CacheItem item1 = new CacheItem("key1", "value1", CacheItemPriority.Low, null);
CacheItem item2 = new CacheItem("key2", "value2", CacheItemPriority.Normal, null);
CacheItem item3 = new CacheItem("key3", "value3", CacheItemPriority.High, null);
AddCacheItem("key1", item1);
AddCacheItem("key2", item2);
AddCacheItem("key3", item3);
TestConfigurationContext context = new TestConfigurationContext();
CachingConfigurationView view = new CachingConfigurationView(context);
view.GetCacheManagerSettings().CacheManagers["test"].MaximumElementsInCacheBeforeScavenging = 2;
view.GetCacheManagerSettings().CacheManagers["test"].NumberToRemoveWhenScavenging = 1;
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", view);
ScavengerTask scavenger = new ScavengerTask("test", view, scavengingPolicy, this);
BackgroundScheduler scheduler = new BackgroundScheduler(null, scavenger);
scheduler.Start();
Thread.Sleep(500);
scheduler.StartScavenging();
Thread.Sleep(250);
scheduler.Stop();
Thread.Sleep(250);
Assert.AreEqual("key1", scavengedKeys);
}
public void WillNotDieIfNotEnoughItemsToScavenge()
{
TestConfigurationContext context = new TestConfigurationContext();
CachingConfigurationView view = new CachingConfigurationView(context);
view.GetCacheManagerSettings().CacheManagers["test"].MaximumElementsInCacheBeforeScavenging = 2;
view.GetCacheManagerSettings().CacheManagers["test"].NumberToRemoveWhenScavenging = 4;
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", view);
ScavengerTask scavenger = new ScavengerTask("test", view, scavengingPolicy, this);
CacheItem itemToRemove = new CacheItem("key1", "value", CacheItemPriority.High, null);
CacheItem itemToRemain = new CacheItem("key2", "value", CacheItemPriority.Low, null);
CacheItem itemToRemoveAlso = new CacheItem("key3", "value", CacheItemPriority.Normal, null);
itemToRemove.MakeEligibleForScavenging();
itemToRemain.MakeEligibleForScavenging();
itemToRemoveAlso.MakeEligibleForScavenging();
AddCacheItem("key1", itemToRemove);
AddCacheItem("key2", itemToRemain);
AddCacheItem("key3", itemToRemoveAlso);
scavenger.DoScavenging();
Assert.AreEqual("key2key3key1", scavengedKeys);
}
public void ItemAddedPreviousToFailedAddIsRemovedCompletelyIfSecondAddFails()
{
TestConfigurationContext context = new TestConfigurationContext();
using (IsolatedStorageBackingStore backingStore = new IsolatedStorageBackingStore("foo"))
{
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", new CachingConfigurationView(context));
Cache cache = new Cache(backingStore, scavengingPolicy);
cache.Initialize(this);
cache.Add("my", new SerializableClass());
try
{
cache.Add("my", new NonSerializableClass());
Assert.Fail("Should have thrown exception internally to Cache.Add");
}
catch (Exception)
{
Assert.IsFalse(cache.Contains("my"));
Assert.AreEqual(0, backingStore.Count);
Hashtable isolatedStorageContents = backingStore.Load();
Assert.AreEqual(0, isolatedStorageContents.Count);
}
}
}
public void WillRemoveSingleItemFromCache()
{
TestConfigurationContext context = new TestConfigurationContext();
CachingConfigurationView view = new CachingConfigurationView(context);
view.GetCacheManagerSettings().CacheManagers["test"].MaximumElementsInCacheBeforeScavenging = 0;
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", view);
ScavengerTask scavenger = new ScavengerTask("test", view, scavengingPolicy, this);
CacheItem itemToRemove = new CacheItem("key", "value", CacheItemPriority.Low, null);
itemToRemove.MakeEligibleForScavenging();
AddCacheItem("key", itemToRemove);
scavenger.DoScavenging();
Assert.AreEqual("key", scavengedKeys);
}
public void ExceptionThrownDuringAddResultsInObjectBeingRemovedFromCacheCompletely()
{
TestConfigurationContext context = new TestConfigurationContext();
MockBackingStore backingStore = new MockBackingStore();
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", new CachingConfigurationView(context));
Cache cache = new Cache(backingStore, scavengingPolicy);
cache.Initialize(this);
try
{
cache.Add("foo", "bar");
Assert.Fail("Should have thrown exception thrown internally to Cache.Add");
}
catch (Exception)
{
Assert.IsFalse(cache.Contains("foo"));
Assert.AreEqual(1, backingStore.removalCount);
}
}
public void ExceptionThrownDuringAddResultsInObjectBeingRemovedFromCacheCompletely()
{
TestConfigurationContext context = new TestConfigurationContext();
MockBackingStore backingStore = new MockBackingStore();
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", new CachingConfigurationView(context));
Cache cache = new Cache(backingStore, scavengingPolicy);
cache.Initialize(this);
try
{
cache.Add("foo", "bar");
Assert.Fail("Should have thrown exception thrown internally to Cache.Add");
}
catch (Exception)
{
Assert.IsFalse(cache.Contains("foo"));
Assert.AreEqual(1, backingStore.removalCount);
}
}
public void ExceptionThrownDuringAddIntoIsolatedStorageAllowsItemToBeReaddedLater()
{
TestConfigurationContext context = new TestConfigurationContext();
using (IsolatedStorageBackingStore backingStore = new IsolatedStorageBackingStore("foo"))
{
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", new CachingConfigurationView(context));
Cache cache = new Cache(backingStore, scavengingPolicy);
cache.Initialize(this);
try
{
cache.Add("my", new NonSerializableClass());
Assert.Fail("Should have thrown exception internally to Cache.Add");
}
catch (Exception)
{
cache.Add("my", new SerializableClass());
Assert.IsTrue(cache.Contains("my"));
}
}
}
public void ExceptionThrownDuringAddIntoIsolatedStorageAllowsItemToBeReaddedLater()
{
TestConfigurationContext context = new TestConfigurationContext();
using (IsolatedStorageBackingStore backingStore = new IsolatedStorageBackingStore("foo"))
{
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", new CachingConfigurationView(context));
Cache cache = new Cache(backingStore, scavengingPolicy);
cache.Initialize(this);
try
{
cache.Add("my", new NonSerializableClass());
Assert.Fail("Should have thrown exception internally to Cache.Add");
}
catch (Exception)
{
cache.Add("my", new SerializableClass());
Assert.IsTrue(cache.Contains("my"));
}
}
}
public void WillScavenge()
{
CacheItem item1 = new CacheItem("key1", "value1", CacheItemPriority.NotRemovable, null);
CacheItem item2 = new CacheItem("key2", "value2", CacheItemPriority.High, null);
CacheItem item3 = new CacheItem("key3", "value3", CacheItemPriority.Normal, null);
CacheItem item4 = new CacheItem("key4", "value4", CacheItemPriority.Low, null);
AddCacheItem("key1", item1);
AddCacheItem("key2", item2);
AddCacheItem("key3", item3);
AddCacheItem("key4", item4);
TestConfigurationContext context = new TestConfigurationContext();
CachingConfigurationView view = new CachingConfigurationView(context);
view.GetCacheManagerSettings().CacheManagers["test"].MaximumElementsInCacheBeforeScavenging = 1;
view.GetCacheManagerSettings().CacheManagers["test"].NumberToRemoveWhenScavenging = 2;
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", view);
ScavengerTask scavenger = new ScavengerTask("test", view, scavengingPolicy, this);
scavenger.DoScavenging();
Assert.AreEqual("key4key3", scavengedKeys);
}
public void WillRemoveSingleItemFromCache()
{
TestConfigurationContext context = new TestConfigurationContext();
CachingConfigurationView view = new CachingConfigurationView(context);
view.GetCacheManagerSettings().CacheManagers["test"].MaximumElementsInCacheBeforeScavenging = 0;
CacheCapacityScavengingPolicy scavengingPolicy = new CacheCapacityScavengingPolicy("test", view);
ScavengerTask scavenger = new ScavengerTask("test", view, scavengingPolicy, this);
CacheItem itemToRemove = new CacheItem("key", "value", CacheItemPriority.Low, null);
itemToRemove.MakeEligibleForScavenging();
AddCacheItem("key", itemToRemove);
scavenger.DoScavenging();
Assert.AreEqual("key", scavengedKeys);
}
