How to show the console logs output in xunit dotnet project

In xUnit, you can use the ITestOutputHelper interface for capturing output, which is specifically designed for capturing test output.

Modify Your Test Class

Update your test class to use ITestOutputHelper for output:

using System;
using Xunit;
using Xunit.Abstractions;

namespace MyTestProject
{
    public class UnitTest1
    {
        private readonly ITestOutputHelper _output;

        public UnitTest1(ITestOutputHelper output)
        {
            _output = output;
        }

        [Fact]
        public void Test1()
        {
            _output.WriteLine("This is a test output from Test1.");
            Assert.True(true);
        }
    }
}

Here’s the complete example from start to finish:

Create the Project

dotnet new xunit -o MyTestProject
cd MyTestProject

Add a Test with ITestOutputHelper

Edit the UnitTest1.cs file:

using System;
using Xunit;
using Xunit.Abstractions;

namespace MyTestProject
{
    public class UnitTest1
    {
        private readonly ITestOutputHelper _output;

        public UnitTest1(ITestOutputHelper output)
        {
            _output = output;
        }

        [Fact]
        public void Test1()
        {
            _output.WriteLine("This is a test output from Test1.");
            Assert.True(true);
        }
    }
}

Add xunit.runner.json

Create an xunit.runner.json file:

{
  "diagnosticMessages": true,
  "internalDiagnosticMessages": true
}

Run the Tests

Run the tests with detailed logging:

dotnet test --logger "console;verbosity=detailed"

With these steps, you should see the output from _output.WriteLine in your terminal when running dotnet test.