Debugging xUnit tests in .NET Core and Visual Studio Code

I'm on a Mac, running .NET Core 1.0 and Visual Studio Code.

I have a console project and a test project. I have setup launch.json so that I can debug the console project.

How do I set up a launch configuration that launches my unit tests and attaches the debugger?

Solution 1:

If you install the latest software and library, it is super easy to debug:

As you can see from the screenshot, just click "debug test" and debug it!

Solution 2:

See Tyler Long's answer. The steps below are not required in the newest versions of Visual Studio Code :)

I made a repository to demonstrate.

First off, the only way I could get the debugger to hit the test was to add a file, Program.cs, take control of the entry point from xUnit, and manually add code to test. It's not ideal, but I imagine you aren't going to be doing this very often, and it's easy to flip it back to normal.

Program.cs:

using System;
namespace XUnitDebugging
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var test = new TestClass();
            test.PassingTest();
            Console.WriteLine("Enter text...");
            Console.ReadLine();

        }
    }
}

Next, in project.json add the following:

  "buildOptions": {
    "emitEntryPoint": true,
    "debugType": "portable"
  },

project.json:

{
  "version": "1.0.0-*",
  "testRunner": "xunit",
  "buildOptions": {
    "emitEntryPoint": true,
    "debugType": "portable"
  },
  "dependencies": {
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0"
    },
    "xunit": "2.2.0-beta2-build3300",
    "dotnet-test-xunit": "2.2.0-preview2-build1029"
  },
  "frameworks": {
    "netcoreapp1.0": {
      "dependencies": {
        "Microsoft.NETCore.App": {
          "type": "platform",
          "version": "1.0.0"
        }
      }
    }
  }
}

This will allow you to debug an xUnit unit test project.