Can a unit test project load the target application's app.config file?

c# .net unit-testing app-config
Jordan Parmer picture Jordan Parmer · Dec 5, 2008 · Viewed 133.3k times · Source

I am unit testing a .NET application (.exe) that uses an app.config file to load configuration properties. The unit test application itself does not have an app.config file.

When I try to unit test a method that utilizes any of the configuration properties, they return null. I'm assuming this is because the unit test application is not going to load in the target application's app.config.

Is there a way to override this or do I have to write a script to copy the contents of the target app.config to a local app.config?

This post kind-of asks this question but the author is really looking at it from a different angle than I am.

EDIT: I should mention that I'm using VS08 Team System for my unit tests.

Answer

Geoffroy Seive picture Geoffroy Seive · Oct 7, 2009

In Visual Studio 2008 I added the app.config file to the test project as an existing item and selected copy as link in order to make sure it's not duplicated. That way I only have one copy in my solution. With several test projects it comes in really handy!

Add Existing Item

Add As Link

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