public void SlowOutput()
{
var args = TestCaseArguments(nameof(SlowOutput));
var process = new ObservableProcess(args);
var consoleOut = new List <LineOut>();
Exception seenException = null;
bool? readingBeforeCancelling = null;
bool? readingAfterCancelling = null;
process.SubscribeLines(c =>
{
consoleOut.Add(c);
if (!c.Line.EndsWith("3"))
{
return;
}
readingBeforeCancelling = process.IsActivelyReading;
process.CancelAsyncReads();
Task.Run(async() =>
{
await Task.Delay(TimeSpan.FromSeconds(2));
readingAfterCancelling = process.IsActivelyReading;
process.StartAsyncReads();
});
}, e => seenException = e);
process.WaitForCompletion(TimeSpan.FromSeconds(20));
process.ExitCode.Should().HaveValue().And.Be(121);
seenException.Should().BeNull();
consoleOut.Should().NotBeEmpty()
.And.Contain(l => l.Line.EndsWith("9"));
readingBeforeCancelling.Should().HaveValue().And.BeTrue();
readingAfterCancelling.Should().HaveValue().And.BeFalse();
}
