Link error while building a unit test target

Question

I have a XCode4 / iOS project with a regular target and unit test target. Everything works fine, except when I try to #import one of my classes in my test class and try to use it. If I try to build the unit test target, I get the following link error:

Undefined symbols for architecture i386:   "_OBJC_CLASS_$_FRRCategory", referenced from:       objc-class-ref in CategoryTests.o ld: symbol(s) not found for architecture i386 collect2: ld returned 1 exit status 

In CategoryTests.m I'm importing the header file in this way:

#import "../todoro/FRRCategory.h" 

What am I doing wrong?

Answer 1

Follow the instructions here. It doesn't require you to add any files to compile sources.

I first missed that "Symbols Hidden by Default=NO" should be for your app target, not test target.

It worked for me anyway (tm).

Answer 2

Make sure that the FRRCategory source file has been added to your Compile Sources for your unit test target.

Xcode 4:

Project Navigator -> "[Project Name]" -> Under Targets select your unit test target -> Build Phases -> Expand Compile Sources -> Click + at bottom of Compile sources and add the correct source file.