public void SingleEntryChange()
        {
            string name = "Lili";
            string[] numbers = { "0899 777 235" };

            PhonebookRepository phonebook = new PhonebookRepository();
            phonebook.AddPhone(name, numbers);

            int result = phonebook.ChangePhone("0899 777 235", "4");
            Assert.AreEqual(1, result);
        }
        public void MultiplePhonesChangePhoneTest()
        {
            PhonebookRepository phonebook = new PhonebookRepository();

            int contactsEntered = 0;
            for (int i = 0; i < 5; i++)
            {
                string name = "Lili" + i;
                string[] numbers = {"0899 777 23"};
            }
            int result = phonebook.ChangePhone("0899 777 23", "53426");
            Assert.AreEqual(5, result);
        }