3321b66d34
In Python 2, objects automatically inherit the __hash__ of their parent class. In Python 3, objects that override __eq__ do not automatically inherit __hash__, so these objects were not hashable under Python 3. Additionally, mutable BSON types and types that overide __eq__ but did not explicitly define __hash__ had broken __hash__ methods under Python 2. This commit unifies the hashing behavior between Python versions and fixes the __hash__ methods such that two BSON objects hash the same only if they are equal. N.B.: bson.code.Code and bson.regex.Regex are no longer hashable under Python 2 because they are mutable.
83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
# Copyright 2009-2015 MongoDB, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Tests for the Timestamp class."""
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import datetime
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import sys
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import copy
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import pickle
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sys.path[0:0] = [""]
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from bson.timestamp import Timestamp
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from bson.tz_util import utc
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from test import unittest
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class TestTimestamp(unittest.TestCase):
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def test_timestamp(self):
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t = Timestamp(123, 456)
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self.assertEqual(t.time, 123)
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self.assertEqual(t.inc, 456)
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self.assertTrue(isinstance(t, Timestamp))
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def test_datetime(self):
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d = datetime.datetime(2010, 5, 5, tzinfo=utc)
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t = Timestamp(d, 0)
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self.assertEqual(1273017600, t.time)
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self.assertEqual(d, t.as_datetime())
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def test_datetime_copy_pickle(self):
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d = datetime.datetime(2010, 5, 5, tzinfo=utc)
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t = Timestamp(d, 0)
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dc = copy.deepcopy(d)
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self.assertEqual(dc, t.as_datetime())
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for protocol in [0, 1, 2, -1]:
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pkl = pickle.dumps(d, protocol=protocol)
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dp = pickle.loads(pkl)
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self.assertEqual(dp, t.as_datetime())
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def test_exceptions(self):
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self.assertRaises(TypeError, Timestamp)
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self.assertRaises(TypeError, Timestamp, None, 123)
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self.assertRaises(TypeError, Timestamp, 1.2, 123)
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self.assertRaises(TypeError, Timestamp, 123, None)
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self.assertRaises(TypeError, Timestamp, 123, 1.2)
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self.assertRaises(ValueError, Timestamp, 0, -1)
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self.assertRaises(ValueError, Timestamp, -1, 0)
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self.assertTrue(Timestamp(0, 0))
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def test_equality(self):
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t = Timestamp(1, 1)
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self.assertNotEqual(t, Timestamp(0, 1))
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self.assertNotEqual(t, Timestamp(1, 0))
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self.assertEqual(t, Timestamp(1, 1))
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# Explicitly test inequality
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self.assertFalse(t != Timestamp(1, 1))
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def test_hash(self):
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self.assertEqual(hash(Timestamp(1, 2)), hash(Timestamp(1, 2)))
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self.assertNotEqual(hash(Timestamp(1, 2)), hash(Timestamp(1, 3)))
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self.assertNotEqual(hash(Timestamp(1, 2)), hash(Timestamp(2, 2)))
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def test_repr(self):
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t = Timestamp(0, 0)
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self.assertEqual(repr(t), "Timestamp(0, 0)")
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if __name__ == "__main__":
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unittest.main()
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