XCode 5 unit testing: starts my app

Question

When I run my tests in XCode 5, the main window of my OS X app appears on the screen for a couple of seconds while running the tests. Why? Even if I uncomment all my tests it still opens my main window.

Answer 1

You are running application test, not logic test. This means an instance of your app will be started and then run the unit tests. This allow you to perform some integration test that require your app is running.

Here is the guide to setup application test and logic test.

If you want to change it to logic test (so it run faster and don't need to start your app first):

1. go to build settings for your unit test target
2. search Bundle
3. remove Bundle Loader and Test Host

Answer 2

Thats right, you have to delete the "Bundle Loader" and "Test Host" from your build settings.

But you have to add the necessary implementation files to your unit test target. The necessary files are what you want to use in your unit test cases. You need to do this because in logic tests XCode wont compile the whole application. So some of your files will be missing.

This is en error message if you have left out a file:

Undefined symbols for architecture i386:   "_OBJC_CLASS_$_Module", referenced from:       objc-class-ref in Lobic Network.o       objc-class-ref in Logic_Unit.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) 

You can add the missing files by selecting the implementation file and bringing up the file inspector. There will be a section named "Target Membership" and there you can set the files target membership to your unit test also.