Forwarding app log messages to xUnit message sink

1-xunit.runner.json

{
  "diagnosticMessages": true
}

2-Tests.csproj

<Project Sdk="Microsoft.NET.Sdk">

    <ItemGroup>
        <PackageReference Include="MartinCostello.Logging.XUnit.v3" Version="*"/>
    </ItemGroup>

    <ItemGroup>
        <Content Include="xunit.runner.json" CopyToOutputDirectory="Always"/>
    </ItemGroup>

</Project>

3-AppFixture.cs

public class App(IMessageSink sink) : AppFixture<Program>
{
    protected override void ConfigureApp(IWebHostBuilder a)
    {
        a.ConfigureLogging(b => b.ClearProviders().AddXUnit(sink));
    }
}

4-Instructions.md

• create a xunit.runner.json file at project root and enable diagnostic messages
• add a package reference to MartinCostello.Logging.XUnit.v3 in the test project
• inject a IMessageSink into the app fixture and configure logging with the sink
• run dotnet test --logger "console;verbosity=normal" to see log messages

Click here for the full sample project.