public void CacheMap_IsCached()
{
var cm = new CacheMap();
cm.SetCached(0, 10);
Assert.IsTrue(cm.IsCached(0, 10));
Assert.IsTrue(cm.IsCached(2, 5));
}
public void CacheMap_GetMisingChunks()
{
var cm = new CacheMap();
cm.SetCached(5, 4); // overlaps with the second one
cm.SetCached(1, 9); // overlaps with previous one
cm.SetCached(20, 10); // has a gap before
cm.SetCached(15, 1); // is adjascent to the next one
cm.SetCached(16, 1); // is adjascent to the next one
var missing = cm.GetMissingChunks(0, 31);
Assert.AreEqual(4, missing.Count);
Assert.AreEqual(new CachedFileChunk(new Range <int>(0, 0)), missing[0]);
Assert.AreEqual(new CachedFileChunk(new Range <int>(10, 14)), missing[1]);
Assert.AreEqual(new CachedFileChunk(new Range <int>(17, 19)), missing[2]);
Assert.AreEqual(new CachedFileChunk(new Range <int>(30, 30)), missing[3]);
}
public void CacheMap_GetOneMisingChunk()
{
var cm = new CacheMap();
cm.SetCached(0, 32);
var missing = cm.GetMissingChunks(33, 10);
Assert.AreEqual(1, missing.Count);
Assert.AreEqual(new CachedFileChunk(33, 10), missing[0]);
}
public override void Write(byte[] buffer, int offset, int count)
{
lock (_innerStream)
{
_cacheMap.SetCached(offset, count);
_innerStream.Position = _writePosition;
_innerStream.Seek(offset, SeekOrigin.Begin);
_innerStream.Write(buffer, 0, count);
_writePosition = _innerStream.Position;
}
}