public void TestNothingChanges()
{
var oldCache = new DataReaderPartition <TestEntity>();
var newCache = new DataReaderPartition <TestEntity>();
var newElement = new TestEntity
{
PartitionKey = "PK",
RowKey = "RK",
TimeStamp = "0"
};
oldCache.Update(newElement);
newCache.Update(newElement);
var updated = new List <TestEntity>();
var deleted = new List <TestEntity>();
oldCache.FindDifference(newCache,
itm => updated.Add(itm),
itm => deleted.Add(itm));
Assert.AreEqual(0, updated.Count);
Assert.AreEqual(0, deleted.Count);
}
private void InitPartition(string partitionKey, IReadOnlyList <T> items)
{
IReadOnlyList <T> updated;
IReadOnlyList <T> deleted;
_lock.EnterWriteLock();
try
{
var oldPartition = _cache.ContainsKey(partitionKey)
? _cache[partitionKey]
: null;
_cache[partitionKey] = new DataReaderPartition <T>();
foreach (var item in items)
{
if (!_cache.ContainsKey(item.PartitionKey))
{
_cache.Add(item.PartitionKey, new DataReaderPartition <T>());
}
var partition = _cache[item.PartitionKey];
partition.Update(item);
}
if (oldPartition == null)
{
NotifyChanged(_cache[partitionKey].GetRows().ToList());
return;
}
(updated, deleted) = oldPartition.FindDifference(_cache[partitionKey]);
}
finally
{
_lock.ExitWriteLock();
}
if (updated != null)
{
NotifyChanged(updated);
}
if (deleted != null)
{
NotifyDeleted(deleted);
}
}
public void TestComplexUpdateDeleteChanges()
{
var oldCache = new DataReaderPartition <TestEntity>();
var newCache = new DataReaderPartition <TestEntity>();
var element1 = new TestEntity
{
PartitionKey = "PK1",
RowKey = "RK1",
TimeStamp = "1"
};
var element2 = new TestEntity
{
PartitionKey = "PK2",
RowKey = "RK2",
TimeStamp = "2"
};
var element3 = new TestEntity
{
PartitionKey = "PK3",
RowKey = "RK3",
TimeStamp = "3"
};
oldCache.Update(element1);
oldCache.Update(element2);
newCache.Update(element2);
newCache.Update(element3);
var updated = new List <TestEntity>();
var deleted = new List <TestEntity>();
oldCache.FindDifference(newCache,
itm => updated.Add(itm),
itm => deleted.Add(itm));
Assert.AreEqual(1, updated.Count);
Assert.AreEqual(1, deleted.Count);
Assert.AreEqual("PK3", updated[0].PartitionKey);
Assert.AreEqual("PK1", deleted[0].PartitionKey);
}
