Simple class to read a json file from the bundle. Works in unit tests or a 'real' app.

JSONFromBundle.h

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface JSONFromBundle : NSObject

// Also removes nulls
+ (id)nameNoExtension:(NSString *)name;
@end

JSONFromBundle.m

#import "JSONFromBundle.h"

@implementation JSONFromBundle

+ (id)nameNoExtension:(NSString *)name {
    NSMutableDictionary *result = [NSJSONSerialization
            JSONObjectWithData:
                    [NSData dataWithContentsOfFile:
                                    [[NSBundle bundleForClass:[self class]] pathForResource:name
                                                                                     ofType:@"json"]
                                           options:0
                                             error:nil]
                       options:NSJSONReadingMutableContainers | NSJSONReadingMutableLeaves
                         error:nil];

    return result;
}
@end