public void CacheDeltasBetween_Should_Complete_When_LatestKnownDelta_Is_Found()
{
var sync = new Synchroniser(new SyncState(), _peerSyncManager, _deltaCache, _deltaHeightWatcher, _deltaHashProvider, _deltaDfsReader, _deltaIndexService,
_mapperProvider, _userOutput, Substitute.For <ILogger>());
var chainSize = 7;
var chain = BuildChainedDeltas(chainSize);
SetCacheExpectations(chain);
var hashes = chain.Keys.ToArray();
var latestHashIndex = 3;
_userOutput.WriteLine($"Caching deltas between {hashes[latestHashIndex]} and {hashes.Last()}");
var cachedHashes = sync.CacheDeltasBetween(hashes[latestHashIndex],
hashes.Last(), _cancellationToken).ToList();
var expectedResultLength = chainSize - latestHashIndex + 1;
cachedHashes.Count.Should().Be(expectedResultLength);
OutputCachedHashes(cachedHashes);
cachedHashes.Should().BeEquivalentTo(hashes.TakeLast(expectedResultLength));
hashes.TakeLast(expectedResultLength - 1).Reverse().ToList().ForEach(h =>
{
_deltaCache.Received(1).TryGetOrAddConfirmedDelta(h,
out Arg.Any <Delta>(), _cancellationToken);
});
}
public void CacheDeltasBetween_Should_Stop_When_One_Of_Deltas_Is_Missing()
{
var sync = new Synchroniser(new SyncState(), _peerSyncManager, _deltaCache, _deltaHeightWatcher, _deltaHashProvider, _deltaDfsReader, _deltaIndexService,
_mapperProvider, _userOutput, Substitute.For <ILogger>());
var chainSize = 5;
var chain = BuildChainedDeltas(chainSize);
SetCacheExpectations(chain);
var hashes = chain.Keys.ToArray();
var brokenChainIndex = 2;
_deltaCache.TryGetOrAddConfirmedDelta(hashes[brokenChainIndex], out Arg.Any <Delta>())
.Returns(false);
_userOutput.WriteLine($"chain is broken for {hashes[brokenChainIndex]}, it cannot be found on Dfs.");
var cachedHashes = sync.CacheDeltasBetween(hashes.First(),
hashes.Last(), _cancellationToken).ToList();
OutputCachedHashes(cachedHashes);
cachedHashes.Count.Should().Be(chainSize - brokenChainIndex);
hashes.TakeLast(chainSize - brokenChainIndex + 1).ToList().ForEach(h =>
{
_deltaCache.Received(1).TryGetOrAddConfirmedDelta(h,
out Arg.Any <Delta>(), _cancellationToken);
});
}
