How to setup AutoFixture.NUnit2

With the release of AutoFixture.NUnit2 earlier today, here is some guidance to get it working.

NUnit Documentation: Addin Identification, Loading and Installation

NUnit examines all assemblies in the bin/addins directory, looking for public classes with the NUnitAddinAttribute and implementing the IAddin interface. It loads all those it finds as addins.

After installing the NuGet package you need to copy:

packages\AutoFixture.NUnit2.3.9.0\lib\net40\Ploeh.AutoFixture.NUnit2.Addins.dll

to your local bin\addins folder.

But where exactly is bin/addins located? The short answer is wherever your nunit.exe or nunit-console.exe resides.

Some default locations:

• NUnit 2.6.2 -> C:\Program Files (x86)\NUnit 2.6.2\bin\addins
• ReSharper 8 -> C:\Program Files (x86)\JetBrains\ReSharper\v8.0\Bin\addins
• TestDriven.Net -> C:\Program Files (x86)\TestDriven.NET 3\NUnit\2.6\addins

Mark Seemann explains how to use AutoDataAttribute on his blog. Here’s the NUnit example he highlights:

[Test, AutoData]
public void IntroductoryTest(
    int expectedNumber, MyClass sut)
{
    int result = sut.Echo(expectedNumber);
    Assert.Equal(expectedNumber, result);
}