如何在Visual Studio中使用XUnit来对在远程进程中运行的代码进行单元测试

Question

We are writing plugins for the Solidworks CAD system. Writing an addin involves compiling a DLL, registering it and then starting solidworks. Code in the dll can be configured to execute as soon as solidworks starts.

What I would like to do is craft a special DLL so that it runs a series of unit tests or a single unit test from visual studio and reports the results back to visual studio in the standard way.

We are happy to use either the standard visual studio test or resharper test system.

Is it possible to write an extension to the unit test system to achieve this. If so how difficult is this to achieve. Perhaps there are extensions that already do something similar for other plugin type environments that need testing.

Answer 1

We wrote a plugin for XUnit that solves this problem

https://github.com/Weingartner/XUnitRemote

and a specific solution using the above is for unit testing solidworks

https://github.com/Weingartner/SolidworksAddinFramework

An example test with example custom facts

namespace XUnitRemote.Test
{
    public class Tests
    {
        private readonly ITestOutputHelper _Output;

        public Tests(ITestOutputHelper output)
        {
            _Output = output;
        }

        [SampleProcessFact]
        public void OutOfProcess()
        {
            _Output.WriteLine("Process name: " + Process.GetCurrentProcess().ProcessName);
            Assert.Equal(5, 3);
        }

        [Fact]
        public void InProcess()
        {
            _Output.WriteLine("Process name: " + Process.GetCurrentProcess().ProcessName);
            Assert.Equal(5, 3);
        }
    }
}

for your custom process you need to write a few hooks so look in the project to get the details on how to do this.