Use bundleForClass to get the unit test bundle's path

iOSUnitTestBundlePath.m

/*
This tips is extremely useful when you test your CoreData app in Unit Test.
*/


// iOS app is an executable bundle, means the `main` method is 
// included inside app bundle, so `mainBundle` returns the app bundle
//
// See doc at https://developer.apple.com/library/ios/#documentation/Cocoa/Reference/Foundation/Classes/NSBundle_Class/Reference/Reference.html#//apple_ref/doc/uid/TP40003624
NSBundle *appBundle = [NSBundle mainBundle];
NSString *appBundlePath = [appBundle bundlePath];

// iOS unit test bundle is not an executable bundle, it is invoked by 
// OCUnit, which is an executable bundle, so you can only get the bundle 
// path by `bundleForClass`
//
// see doc at: 
NSBundle *testBundle = [NSBundle bundleForClass:[YourTestClass class]];
NSString *testBundlePath = [testBundle bundlePath];

The link inside gist is not clickable, click it here: NSBundle Class Reference

http://phone-phophone.blogspot.com/2011/08/blog-post.html

NSBundle* bundle = [NSBundle bundleForClass:[OCTestTests class]];
NSString* testBundlePath = [bundle bundlePath];
NSString* path = [bundle pathForResource:@"Info" ofType:@"plist"];
NSLog(@"path = %@", path);    
// path = /Users/nagano/Library/Developer/Xcode/DerivedData/OCTest-edbutzmpyheqvyfvkyfooctdgljv/Build/Products/Debug-iphonesimulator/OCTestTests.octest/Info.plist