WCF and FitNesse - how to load the client's config file

Firstly, here is a great post on how to get started with FitNesse - http://schuchert.wikispaces.com/Acceptance+Testing.UsingSlimDotNetInFitNesse. This is what I used to get started. What I wanted to do was use FitNesse to perform integration tests for my web services - which means the assembly that the fitsharp runner loads, must also load the config file for that assembly (as it contains the service model configuration which is required when we create the client proxy within the loaded assembly).

Under the Create a page with necessary configuration heading in the above link, it defines how to setup your test fixtures to use the .Net test runner. The line we're interested in the one below.

!define COMMAND_PATTERN {%m -r fitSharp.Slim.Service.Runner,c:\tools\nslim\fitsharp.dll %p}

We need to update this line to include a reference to the our test project's config file. So an example would be:

!define COMMAND_PATTERN {%m -a c:\projects\someapplication\acceptancetests\acceptancetests.dll.config -r fitSharp.Slim.Service.Runner,c:\tools\nslim\fitsharp.dll %p}

This allows you to load the config where your acceptancetests.dll makes a call through a WCF proxy (i.e. acceptancetests.dll contains the type which Runner.exe will call - and this type calls the service)