public void AddMoreItems_MaxCountReach()
{
var lruCollection = new LRUCollection <CacheEntry>(5);
// add 6 items to collection
for (int i = 0; i < 6; i++)
{
lruCollection.Add(CacheEntry.New(i.ToString(), i.ToString(), TimeSpan.FromSeconds(100)));
}
// check count of collection
Assert.True(lruCollection.Count() == 5);
// check item one must have been remove
Assert.Null(lruCollection.Get(new CacheEntryIdentifier("0")));
// the fifth item must be present
Assert.NotNull(lruCollection.Get(new CacheEntryIdentifier("5")));
}
public void ClearingCollection_AllItemsMustBeRemoved()
{
var lruCollection = new LRUCollection <CacheEntry>(5);
var entry = CacheEntry.New("1", "1", TimeSpan.FromSeconds(100));
lruCollection.Add(entry);
lruCollection.Clear();
Assert.True(lruCollection.Count() == 0);
Assert.Null(lruCollection.Get(new CacheEntryIdentifier("1")));
}
public void AddedItemsWithSameKeyButDifferentCasing_NewItemMustBeReplaced()
{
var lruCollection = new LRUCollection <CacheEntry>(5);
var entryOne = CacheEntry.New("key", "1.1", TimeSpan.FromSeconds(100));
var entryTwo = CacheEntry.New("KEY", "1.2", TimeSpan.FromSeconds(100));
lruCollection.Add(entryOne);
lruCollection.Add(entryTwo);
Assert.Equal(1, lruCollection.Count());
Assert.Equal(lruCollection.Get(new CacheEntryIdentifier("key")).Value, entryTwo.Value);
}
public void RemovingItem_ItemNoLongerExists()
{
var lruCollection = new LRUCollection <CacheEntry>(5);
var entry = CacheEntry.New("1", "1", TimeSpan.FromSeconds(100));
lruCollection.Add(entry);
lruCollection.Remove(new CacheEntryIdentifier("1"));
Assert.True(lruCollection.Count() == 0);
Assert.Null(lruCollection.Get(new CacheEntryIdentifier("1")));
}
public void GetItem_MustMoveToStart()
{
var lruCollection = new LRUCollection <CacheEntry>(5);
// add 5 items to collection
for (int i = 0; i < 5; i++)
{
lruCollection.Add(CacheEntry.New(i.ToString(), i.ToString(), TimeSpan.FromSeconds(100)));
}
// accessing 0,2,4
lruCollection.Get(new CacheEntryIdentifier("0"));
lruCollection.Get(new CacheEntryIdentifier("2"));
lruCollection.Get(new CacheEntryIdentifier("4"));
// adding 2 new items
lruCollection.Add(CacheEntry.New("5", "5", TimeSpan.FromSeconds(100)));
lruCollection.Add(CacheEntry.New("6", "7", TimeSpan.FromSeconds(100)));
// now the items 1,3 must be replaced
Assert.Null(lruCollection.Get(new CacheEntryIdentifier("1")));
Assert.Null(lruCollection.Get(new CacheEntryIdentifier("3")));
}
