objective c - NSBundle pathForResource returns nil

Question

I've been trying to load a simple text file in a unit test for an iOS app.

NSString* resourcePath = [[NSBundle mainBundle] pathForResource: @"stopPointsInCircleData" ofType:@"txt"];
NSString* stopPointData = [NSData dataWithContentsOfFile: resourcePath];

My problem is that pathForResource returns nil.

The file stopPointsInCircleData.txt is located in the directory of the test code and the file is listed correctly under "Copy Bundle Resources" in the "Build Phases" of the test target.

I've tried to relax the search by setting ofType to nil, but thet didn't work either.

Any help is very much apprechiated.

Answer 1

Your problem is that in a unit test target, -mainBundle doesn't refer to the test target bundle but instead to the bundle of the executable in which the test target is injected. In the case of ios test targets, this is your app bundle; in Mac test targets it may either be the app bundle or the OCUnit runner.

You should look for resources in your test target's bundle. Inside a test class, it's done like this:

NSBundle *myBundle = [NSBundle bundleForClass: [self class]];