public void TestToStringMethod(
            [Values(
                 "FREQ=WEEKLY;BYDAY=MO,TU",
                 "FREQ=YEARLY;BYMONTHDAY=1",
                 "FREQ=YEARLY;BYSETPOS=1",
                 "FREQ=YEARLY;COUNT=1",
                 "FREQ=YEARLY;INTERVAL=1",
                 "FREQ=YEARLY;UNTIL=20181023T220000Z")]
            string input)
        {
            IRRuleTokenContainer container = tokenizer.Tokenize(input);

            Assert.AreEqual(input, container.ToString());
        }