Class Foo is implemented in both MyApp and MyAppTestCase. One of the two will be used. Which one is undefined

Question

Recently I started Unit testing my application. This project (in Xcode4) was created without a unit test bundle so I had to set it up. I have followed the steps from here: h

Answer 1

For me, all I needed to do was uncheck the checkbox that makes the Foo class a member of the unit test target. It should not be a member of both targets, and should look like this:

In case you can't see the image, it's a screenshot of the Xcode "Target Membership" pane. There are two targets: one with an "A" application icon and the test name. The other is the unit test target, and has a unit test icon:

Target Membership
[X] Foo
[ ] FooTests