Add support for logging to an xUnit ITestOutputHelper

[siewers]

Is your feature request related to a problem? Please describe.
When using xUnit, it would be nice to be able to log the output from WireMock to the test output helper.

Describe the solution you'd like
Introduce a new WireMock.Net.XUnit project and create a TestOutputHelperWireMockLogger class, for logging to an ITestOutputHelper.

Describe alternatives you've considered
Keeping the implementation in my own code base.

Is your feature request supported by WireMock (java version)? Please provide details.
Not to my knowledge, no. XUnit is a .NET testing framework, so there is no direct Java equivalent.

Additional context
This is the implementation I'm currently using:

private sealed class TestOutputHelperWireMockLogger : IWireMockLogger
{
    private readonly ITestOutputHelper _testOutputHelper;

    public TestOutputHelperWireMockLogger(ITestOutputHelper testOutputHelper)
    {
        _testOutputHelper = testOutputHelper;
    }

    public void Debug(string formatString, params object[] args)
    {
        _testOutputHelper.WriteLine(Format("Debug", formatString, args));
    }

    public void Info(string formatString, params object[] args)
    {
        _testOutputHelper.WriteLine(Format("Info", formatString, args));
    }

    public void Warn(string formatString, params object[] args)
    {
        _testOutputHelper.WriteLine(Format("Warning", formatString, args));
    }

    public void Error(string formatString, params object[] args)
    {
        _testOutputHelper.WriteLine(Format("Error", formatString, args));
    }

    public void Error(string formatString, Exception exception)
    {
        _testOutputHelper.WriteLine(Format("Error", formatString, exception.Message));

        if (exception is AggregateException ae)
        {
            ae.Handle(ex =>
            {
                _testOutputHelper.WriteLine(Format("Error", "Exception {0}", ex.Message));
                return true;
            });
        }
    }

    public void DebugRequestResponse(LogEntryModel logEntryModel, bool isAdminRequest)
    {
        var message = JsonConvert.SerializeObject(logEntryModel, Formatting.Indented);
        _testOutputHelper.WriteLine(Format("DebugRequestResponse", "Admin[{0}] {1}", isAdminRequest, message));
    }

    private static string Format(string level, string formatString, params object[] args)
    {
        var message = args.Length > 0 ? string.Format(formatString, args) : formatString;

        return $"{DateTime.UtcNow} [{level}] : {message}";
    }
}

[StefH]

#759

[StefH]

@siewers
How to use this in the xunit test ?
Or is just referencing the new project enough?

[siewers]

It should be sufficient to reference the project.
Normally you already have a reference to xUnit, but since it can't write to the console, you need to use the ITestOutputHelper.