public void dispose_executes_only_on_the_first_call()
{
var mockLogger = new TestLogger(LogLevel.Trace);
var sideEffect = false;
void DisposeAction()
{
sideEffect = true;
// ReSharper disable once AccessToModifiedClosure
mockLogger.Debug()?.Log($"Inside {nameof(DisposeAction)}");
}
var disposableHelper = new DisposableHelper();
const string disposableDesc = "test_disposable";
var isDisposedByThisCall = disposableHelper.DoOnce(mockLogger, disposableDesc, DisposeAction);
isDisposedByThisCall.Should().BeTrue();
sideEffect.Should().BeTrue();
disposableHelper.HasStarted.Should().BeTrue();
mockLogger.Lines.Should().HaveCount(3);
mockLogger.Lines.First().Should().MatchEquivalentOf($"*Starting to dispose {disposableDesc}*");
mockLogger.Lines.Skip(1).First().Should().MatchEquivalentOf($"*Inside {nameof(DisposeAction)}*");
mockLogger.Lines.Skip(2).First().Should().MatchEquivalentOf($"*Finished disposing {disposableDesc}*");
mockLogger = new TestLogger(LogLevel.Trace);
sideEffect = false;
isDisposedByThisCall = disposableHelper.DoOnce(mockLogger, disposableDesc, DisposeAction);
isDisposedByThisCall.Should().BeFalse();
sideEffect.Should().BeFalse();
disposableHelper.HasStarted.Should().BeTrue();
mockLogger.Lines.Should().ContainSingle();
mockLogger.Lines.First().Should().MatchEquivalentOf($"*{disposableDesc}*already disposed*");
}
public void Dispose()
{
if (!_isEnabled)
{
_logger.Debug()?.Log("Disabled - nothing to dispose, exiting");
return;
}
_disposableHelper.DoOnce(_logger, _dbgName, () =>
{
_logger.Debug()?.Log("Calling CancellationTokenSource.Cancel()...");
// ReSharper disable once AccessToDisposedClosure
CancellationTokenSource.Cancel();
_logger.Debug()?.Log("Called CancellationTokenSource.Cancel()");
_logger.Debug()
?.Log("Waiting for loop to exit... Is cancellation token signaled: {IsCancellationRequested}",
CancellationTokenSource.Token.IsCancellationRequested);
_loopCompleted.Wait();
_logger.Debug()?.Log("Disposing _singleThreadTaskScheduler ...");
_singleThreadTaskScheduler.Dispose();
_logger.Debug()?.Log("Disposing HttpClient...");
HttpClient.Dispose();
_logger.Debug()?.Log("Disposing CancellationTokenSource...");
CancellationTokenSource.Dispose();
_logger.Debug()?.Log("Exiting...");
});
}
public void Dispose() =>
_disposableHelper.DoOnce(_logger, ThisClassName, () =>
{
_logger.Debug()?.Log("Signalling _cancellationTokenSource");
_cancellationTokenSource.Cancel();
_logger.Debug()?.Log("Waiting for _singleThreadTaskScheduler thread `{ThreadName}' to exit", _singleThreadTaskScheduler.Thread.Name);
_singleThreadTaskScheduler.Thread.Join();
_logger.Debug()?.Log("_singleThreadTaskScheduler thread exited - disposing of _cancellationTokenSource and exiting");
_cancellationTokenSource.Dispose();
});