Using Moles with XUnit - wrong dll version

Question

I'm trying to set up Moles to use in our unit testing. We are using xunit, so I am using the Xunit extension that comes with moles (Microsoft.Moles.Framework.Xunit). However, as we are running Xunit 1.7, Moles is complaining that I am not running Version 1.6.1.1521 (with a FileLoadException).

The Moles Manual (page 28) does say:

xUnit.net Version:

1.5.0.1479 (for other xUnit.net versions, recompile the attribute from sources)

This is where I get stuck - is the source code for this xunit extension available somewhere? Or will I have to use the specific version of xunit that Moles requires?

score 2 · Answer 1 · answered May 16 '11 at 12:43

Can't you define a assembly binding redirect in the moles.runner.exe.config?

<configuration>
    <runtime>
        <assemblyBinding  xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <assemblyIdentity
                    name="xunit.dll"
                    publicKeyToken="8d05b1bb7a6fdb6c" />
                <bindingRedirect oldVersion="1.5.0.1479" newVersion="1.6.1.1521" />
            </dependentAssembly>
        </assemblyBinding>
    </runtime>
</configuration>

score 2 · Answer 2 · answered May 18 '11 at 11:04

If you have to recompile then you can do it. I looked for Moles source code but I couldn't find it anywhere. Then I tried to disassemble Microsoft.Moles.Xunit.dll and I realized that the attribute is just few lines long.

MoledAttribute source code:

using System;
using System.Reflection;
using XUnit;

namespace Microsoft.Moles.Framework.Xunit
{
    public sealed class MoledAttribute : BeforeAfterTestAttribute
    {
        // Fields
        private IDisposable _molesContext;

        public override void Before(MethodInfo methodUnderTest)
        {
            this._molesContext = MolesContext.Create();
        }

        public override void After(MethodInfo methodUnderTest)
        {
            IDisposable disposable = this._molesContext;
            if (disposable != null)
            {
                disposable.Dispose();
            }
            this._molesContext = null;
        }
    }
}

You should create a new class library and add reference to your xunit.dll of any version you want. It should even work with 1.8.0.1545 as I haven't noticed any changes to XUnit.BeforeAfterTestAttribute which is the only depencency.

Smashery · Accepted Answer · 2011-05-23T23:48:23.167

2

While proxon's answer was very helpful for getting my task done, allow me to present a better answer I found as I investigated further (to hopefully help others coming across this problem). The source code is found in C:\Program Files\Microsoft Moles\Documentation\moles.samples.zip. Pretty much identical to the code that proxon decompiled, of course.

You can also find the NUnit and MbUnit wrappers in there.

edited May 23 '11 at 23:48

answered May 23 '11 at 04:28

Smashery

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Using Moles with XUnit - wrong dll version

3 Answers3