Check all view controllers to see if they load the view on init

ARAllViewControllers.m

//
//  ARAllViewControllers.m
//  Artsy
//
//  Created by Orta on 16/02/2014.
//  Copyright (c) 2014 Art.sy. All rights reserved.
//

#import <XCTest/XCTest.h>
#import "ARClassGetSubclasses.h"

@interface ARAllViewControllers : XCTestCase

@end

@implementation ARAllViewControllers

- (void)testAllViewControllerSubclassesDoNotCallViewLoadOnInit
{
    NSArray *classes = ARClassGetSubclasses(UIViewController.class);
    for (Class klass in classes) {

        NSString *klassName = NSStringFromClass(klass);
        if (![klassName hasPrefix:@"AR"]) continue;

        @try {
            UIViewController *controller = [[klass alloc] init];
            NSLog(@"Loaded: %d - %@", controller.isViewLoaded, klassName);
        }
        @catch (NSException *exception) {

        }
    }}

@end

ARClassGetSubclasses.h

//
//  ARClassGetSubclasses.h
//  Artsy
//
//  Created by Orta on 16/02/2014.
//  Copyright (c) 2014 Art.sy. All rights reserved.
//

extern NSArray *ARClassGetSubclasses(Class parentClass);

ARClassGetSubclasses.m

//
//  ARClassGetSubclasses.m
//  Artsy
//
//  Created by Orta on 16/02/2014.
//  Copyright (c) 2014 Art.sy. All rights reserved.
//

// https://gist.github.com/d4rkl1gh7/1075882

#import "ARClassGetSubclasses.h"

#import <Foundation/Foundation.h>
#import <objc/objc-runtime.h>

NSArray *ARClassGetSubclasses(Class parentClass) {
    int numClasses = objc_getClassList(NULL, 0);
    Class *classes = NULL;

    classes = malloc(sizeof(Class) * numClasses);
    numClasses = objc_getClassList(classes, numClasses);

    NSMutableArray *result = [NSMutableArray array];
    for (NSInteger i = 0; i < numClasses; i++) {
        Class superClass = classes[i];
        do{
            superClass = class_getSuperclass(superClass);
        } while(superClass && superClass != parentClass);

        if (superClass == nil) {
            continue;
        }
        [result addObject:classes[i]];
    }
    free(classes);
    return result;
}