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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
import unittest
import dns.immutable
class ImmutableTestCase(unittest.TestCase):
def test_ImmutableDict_hash(self):
d1 = dns.immutable.ImmutableDict({'a': 1, 'b': 2})
d2 = dns.immutable.ImmutableDict({'b': 2, 'a': 1})
d3 = {'b': 2, 'a': 1}
self.assertEqual(d1, d2)
self.assertEqual(d2, d3)
self.assertEqual(hash(d1), hash(d2))
def test_ImmutableDict_hash_cache(self):
d = dns.immutable.ImmutableDict({'a': 1, 'b': 2})
self.assertEqual(d._hash, None)
h1 = hash(d)
self.assertEqual(d._hash, h1)
h2 = hash(d)
self.assertEqual(h1, h2)
def test_constify(self):
items = (
(bytearray([1, 2, 3]), b'\x01\x02\x03'),
((1, 2, 3), (1, 2, 3)),
((1, [2], 3), (1, (2,), 3)),
([1, 2, 3], (1, 2, 3)),
([1, {'a': [1, 2]}],
(1, dns.immutable.ImmutableDict({'a': (1, 2)}))),
('hi', 'hi'),
(b'hi', b'hi'),
)
for input, expected in items:
self.assertEqual(dns.immutable.constify(input), expected)
self.assertIsInstance(dns.immutable.constify({'a': 1}),
dns.immutable.ImmutableDict)
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