forked from googleapis/python-spanner-django
/
test_checksum.py
54 lines (39 loc) · 1.41 KB
/
test_checksum.py
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# Copyright 2020 Google LLC
#
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file or at
# https://developers.google.com/open-source/licenses/bsd
import unittest
from google.api_core.exceptions import Aborted
from google.cloud.spanner_dbapi.checksum import (
_compare_checksums,
ResultsChecksum,
)
class Test_compare_checksums(unittest.TestCase):
def test_equal(self):
original = ResultsChecksum()
original.consume_result(5)
retried = ResultsChecksum()
retried.consume_result(5)
self.assertIsNone(_compare_checksums(original, retried))
def test_less_results(self):
original = ResultsChecksum()
original.consume_result(5)
retried = ResultsChecksum()
with self.assertRaises(Aborted):
_compare_checksums(original, retried)
def test_more_results(self):
original = ResultsChecksum()
original.consume_result(5)
retried = ResultsChecksum()
retried.consume_result(5)
retried.consume_result(2)
with self.assertRaises(Aborted):
_compare_checksums(original, retried)
def test_mismatch(self):
original = ResultsChecksum()
original.consume_result(5)
retried = ResultsChecksum()
retried.consume_result(2)
with self.assertRaises(Aborted):
_compare_checksums(original, retried)