public async Task StopAsync_Should_Log_If_Not_Running_Sync()
{
_deltaHeightWatcher = Substitute.For <IDeltaHeightWatcher>();
_deltaHeightWatcher.GetHighestDeltaIndexAsync().Returns(new DeltaIndex {
Cid = ByteString.Empty, Height = 10000
});
var sync = new Synchroniser(new SyncState(), _peerSyncManager, _deltaCache, _deltaHeightWatcher, _deltaHashProvider, _deltaDfsReader,
_deltaIndexService, _mapperProvider, _userOutput, Substitute.For <ILogger>());
await sync.StopAsync(CancellationToken.None);
_userOutput.Received(1).WriteLine("Sync is not currently running.");
sync.State.IsRunning.Should().BeFalse();
}