Mock of UserDefaults

MockUserDefaults.swift

class MockUserDefault: UserDefaults {
    var persistedValue: Data? = nil
    var persistedKey: String? = nil
    
    override func set(_ value: Any?, forKey defaultName: String) {
        persistedValue = value as? Data
        persistedKey = defaultName
    }
    
    override func object(forKey defaultName: String) -> Any? {
        return persistedValue
    }
}