[Feature]: Stream logs

[verdie-g]

Problem Statement

I would like the logs to be displayed in real time in Rider rather than at the end of the test.

For example this test will print 3 lines only at the end.

    [Test]
    public async Task X()
    {
        for (int i = 0; i < 3; i += 1)
        {
            // TestContext.Current!.Output.WriteLine(i.ToString());
            // Console.WriteLine(i);
            TestContext.Current!.GetDefaultLogger().LogInformation(i.ToString());
            await Task.Delay(1000);
        }
    }

Proposed Solution

In Rider, the logs are displayed instantly in the test output.

Alternatives Considered

No response

Feature Category

Test Output / Reporting

How important is this feature to you?

Nice to have - would improve my experience

Additional Context

No response

Contribution

• I'm willing to submit a pull request for this feature

[thomhurst]

I don't think I can do anything from TUnit side. I think Rider would need to implement this?

[verdie-g]

I'm not sure because it works fine with NUnit

    [Test]
    public async Task Test1()
    {
        for (int i = 0; i < 3; i += 1)
        {
            TestContext.Progress.WriteLine(i);
            await Task.Delay(1000);
        }
    }

[thomhurst]

Could you force NUnit to run in Microsoft testing platform mode and make sure it still works?

Just want to make sure that's not just VSTest behaviour

[verdie-g]

Following https://learn.microsoft.com/en-us/dotnet/core/testing/unit-testing-nunit-runner-intro#enable-nunit-runner-in-a-nunit-project I can still the logs being streamed. I'm not able to see the logs with dotnet test, I'm probably missing a cli arg.

[thomhurst]

Can you try TUnit v1.12.0

[verdie-g]

It works but it's not as smooth (flickering, delay) as the TestContext.Progress.WriteLine of NUnit
https://github.com/user-attachments/assets/42f52219-e24b-4401-b70d-2b88f2b32ca6

[thomhurst]

@verdie-g I'm pretty sure NUnit is still using some VSTest approach (and using the Bridge package to run in MTP mode).

MTP doesn't seem to have real-time per-test streaming capabilities. My workaround is to send a test node update with the latest output, which is why you see that flashing. It's more of a workaround than an actual solution. As I think Microsoft would need to expose a new extensibility point for this.

[verdie-g]

Understood. I would be curious to know if it's a feature that is tracked on the Microsoft side.