public async Task RunInBackgroundAsync_Using_OnFatalError()
{
Exception fakeException = new Exception();
Exception fatalError = null;
//set up processor to throw
var mockLogProcessor = new Mock <ILogProcessor>();
mockLogProcessor
.Setup(s => s.ProcessLogsAsync(It.IsAny <FilterLog[]>()))
.ThrowsAsync(fakeException);
var web3Mock = new Web3Mock();
var logs = new[] { new FilterLog() };
web3Mock.GetLogsMock
.Setup(p => p.SendRequestAsync(It.IsAny <NewFilterInput>(), null))
.ReturnsAsync(logs);
web3Mock.BlockNumberMock
.Setup(p => p.SendRequestAsync(null))
.ReturnsAsync(100.ToHexBigInteger());
var cancellationTokenSource = new CancellationTokenSource(TimeSpan.FromSeconds(10));
var processor = new LogsProcessorBuilder(web3Mock.Eth)
.Set(p => p.BlocksPerBatch = 1)
.Set(p => p.MinimumBlockNumber = 0)
.OnFatalError(e => fatalError = e)
.Add(mockLogProcessor.Object)
.Build();
var backgroundTask = processor.ProcessContinuallyInBackgroundAsync(cancellationTokenSource.Token);
//simulate doing some work until cancellation is requested
while (!backgroundTask.IsCompleted)
{
await Task.Delay(100);
}
Assert.Same(fakeException, fatalError);
}
