Exception when running with ToTask()

[Vicente Penades]

When I run this line:

            var psi = CreateStartInfo(...);

            var lines = await Cysharp.Diagnostics.ProcessX
                .StartAsync(psi)
                .ToTask(token);            

            var text = string.Join("\r\n", lines);

I get this exception:

Cysharp.Diagnostics.ProcessErrorException : Process returns error, ExitCode:0

AsyncOperation`1.GetResult(Int16 token)
ProcessAsyncEnumerator.MoveNextAsync()
ProcessAsyncEnumerable.ToTask(CancellationToken cancellationToken)
ProcessAsyncEnumerable.ToTask(CancellationToken cancellationToken)
...

When calling syncronously, everything works fine.

Steps to reproduce:

• clone https://github.com/vpenades/GltfValidator.git
• run test Test1Async

[Yoshifumi Kawai]

thanks for reporting.
However can not find Test1Async code in your repository.

[Vicente Penades]

here's the link for Test1Async

[Yoshifumi Kawai]

Currently if data exists in StdError, ProcessX throws error.
If you want to ignore stderror result, use GetDualAsyncEnumerable.

public static async Task<ValidationReport> ValidateFileAsyncProcessX(string gltfFilePath, System.Threading.CancellationToken token)
{
    var psi = CreateStartInfo(gltfFilePath);
    var (_, stdout, stderror) = Cysharp.Diagnostics.ProcessX.GetDualAsyncEnumerable(psi);
    var lines = await stdout.ToTask(); // ignore stderror

    return ValidationReport.Parse(string.Join("\r\n", lines));
}

[Vicente Penades]

That solved the problem, thanks for the fast reply!