MockUserDefaults

MockUserDefaults is a simple replacement for NSUserDefaults/UserDefaults to make test easier.

Installation

SwiftPM (recommended)

.package(url: "https://github.com/417-72KI/MockUserDefaults.git", from: "2.3.0"),

CocoaPods

pod 'MockUserDefaults'

Usage

Objective-C

NSUserDefaults *userDefaults = [NSUserDefaults mockedUserDefaults];
[userDefaults setObject:@"string" forKey:@"key"];

XCTAssertEqualObjects([userDefaults objectForKey:@"key"], @"string");

Swift

let userDefaults: UserDefaults = .mocked
userDefaults.set("string", forKey: "key")

XCTAssertEqual(userDefaults.string(forKey: "key"), "string")

Demo

Create project

First time

make init_demo_app

After the first time

make demo_app

Usage

1. open MockUserDefaultsDemo.xcworkspace
2. Build and run app (⌘+R) in iPhone / iPad Simulator
3. Add any keys and values
4. Run test (⌘+U) in same simulator
5. Re-run app (⌘+R) in same simulator
6. You can see that the app isn't affected by the test.