Determine if host app is running in test environment or in real one. Usefull to use in applicationDidFinishLaunching to change the startup path.

NSProcessInfo+DetectTestEnvironment.h

//
//  NSProcessInfo+DetectTestEnvironment.h
//  Memoir
//
//  Created by JM - http://jmnavarro.github.com
//

#import <Foundation/Foundation.h>

@interface NSProcessInfo (DetectTestEnvironment)

- (BOOL)isRunningTests;

@end

NSProcessInfo+DetectTestEnvironment.m

//
//  NSProcessInfo+DetectTestEnvironment.m
//
//  Created by JM - http://jmnavarro.github.com
//

#import "NSProcessInfo+DetectTestEnvironment.h"

@implementation NSProcessInfo (DetectTestEnvironment)

- (BOOL)isRunningTests {
    for (NSString *arg in [[NSProcessInfo processInfo] arguments]) {
        if ([[arg lowercaseString] isEqualToString:@"-sentest"] || [arg hasSuffix:@".octests"]) {
            return YES;
        }
    }
    return NO;
}

@end