public void EmptyPhonebookListEntriesTest()
 {
     PhonebookRepository phonebook = new PhonebookRepository();
     var result = phonebook.ListEntries(0, 1);
 }
        public void InvalidCountListEntriesTest()
        {
            string name = "Lili";
            string[] numbers = { "0899 777 235" };

            PhonebookRepository phonebook = new PhonebookRepository();
            phonebook.AddPhone(name, numbers);
            var result = phonebook.ListEntries(0, 3);
        }
        public void SingleEntryListEntriesTest()
        {
            string name = "Lili";
            string[] numbers = { "0899 777 235" };

            PhonebookRepository phonebook = new PhonebookRepository();
            phonebook.AddPhone(name, numbers);
            var result = phonebook.ListEntries(0, 1);
            Assert.AreEqual(1, result.Count());
        }