73 lines
2.5 KiB
Python
73 lines
2.5 KiB
Python
# Copyright 2016-present 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 Decimal128."""
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import pickle
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import sys
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from decimal import Decimal
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sys.path[0:0] = [""]
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from bson.decimal128 import Decimal128, create_decimal128_context
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from test import client_context, unittest
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class TestDecimal128(unittest.TestCase):
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def test_round_trip(self):
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coll = client_context.client.pymongo_test.test
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coll.drop()
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dec128 = Decimal128.from_bid(
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b'\x00@cR\xbf\xc6\x01\x00\x00\x00\x00\x00\x00\x00\x1c0')
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coll.insert_one({'dec128': dec128})
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doc = coll.find_one({'dec128': dec128})
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self.assertIsNotNone(doc)
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self.assertEqual(doc['dec128'], dec128)
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def test_pickle(self):
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dec128 = Decimal128.from_bid(
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b'\x00@cR\xbf\xc6\x01\x00\x00\x00\x00\x00\x00\x00\x1c0')
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for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
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pkl = pickle.dumps(dec128, protocol=protocol)
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self.assertEqual(dec128, pickle.loads(pkl))
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def test_special(self):
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dnan = Decimal('NaN')
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dnnan = Decimal('-NaN')
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dsnan = Decimal('sNaN')
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dnsnan = Decimal('-sNaN')
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dnan128 = Decimal128(dnan)
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dnnan128 = Decimal128(dnnan)
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dsnan128 = Decimal128(dsnan)
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dnsnan128 = Decimal128(dnsnan)
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# Due to the comparison rules for decimal.Decimal we have to
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# compare strings.
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self.assertEqual(str(dnan), str(dnan128.to_decimal()))
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self.assertEqual(str(dnnan), str(dnnan128.to_decimal()))
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self.assertEqual(str(dsnan), str(dsnan128.to_decimal()))
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self.assertEqual(str(dnsnan), str(dnsnan128.to_decimal()))
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def test_decimal128_context(self):
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ctx = create_decimal128_context()
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self.assertEqual("NaN", str(ctx.copy().create_decimal(".13.1")))
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self.assertEqual("Infinity", str(ctx.copy().create_decimal("1E6145")))
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self.assertEqual("0E-6176", str(ctx.copy().create_decimal("1E-6177")))
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if __name__ == '__main__':
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unittest.main()
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