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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license

import unittest

import dns.ttl


class TTLTestCase(unittest.TestCase):
    def test_bind_style_ok(self):
        ttl = dns.ttl.from_text("2w1d1h1m1s")
        self.assertEqual(ttl, 2 * 604800 + 86400 + 3600 + 60 + 1)

    def test_bind_style_ok2(self):
        # no one should do this, but it is legal! :)
        ttl = dns.ttl.from_text("1s2w1m1d1h")
        self.assertEqual(ttl, 2 * 604800 + 86400 + 3600 + 60 + 1)

    def test_bind_style_bad_unit(self):
        with self.assertRaises(dns.ttl.BadTTL):
            dns.ttl.from_text("5y")

    def test_bind_style_no_unit(self):
        with self.assertRaises(dns.ttl.BadTTL):
            dns.ttl.from_text("1d5")

    def test_bind_style_leading_unit(self):
        with self.assertRaises(dns.ttl.BadTTL):
            dns.ttl.from_text("s")

    def test_bind_style_unit_without_digits(self):
        with self.assertRaises(dns.ttl.BadTTL):
            dns.ttl.from_text("1mw")

    def test_empty(self):
        with self.assertRaises(dns.ttl.BadTTL):
            dns.ttl.from_text("")