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Code Issues Projects Releases Packages Wiki Activity Actions 17

bpo-31784: Use time.time_ns() in uuid.uuid1() (GH-11189)

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uuid.uuid1() now calls time.time_ns() rather than
int(time.time() * 1e9). Replace also int(nanoseconds/100)
with nanoseconds // 100. Add an unit test.
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Victor Stinner 2018-12-18 11:45:13 +01:00 • committed by GitHub
parent 1dd035954b
commit 62a68b762a
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3 changed files with 22 additions and 2 deletions
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18
Lib/test/test_uuid.py
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@ -9,6 +9,7 @@ import pickle
import shutil
import subprocess
import sys
from unittest import mock
py_uuid = support.import_fresh_module('uuid', blocked=['_uuid'])
c_uuid = support.import_fresh_module('uuid', fresh=['_uuid'])
@ -567,6 +568,23 @@ class BaseTestUUID:
u = self.uuid.uuid1()
self.assertEqual(u.is_safe, self.uuid.SafeUUID.unknown)
def test_uuid1_time(self):
with mock.patch.object(self.uuid, '_has_uuid_generate_time_safe', False), \
mock.patch.object(self.uuid, '_generate_time_safe', None), \
mock.patch.object(self.uuid, '_last_timestamp', None), \
mock.patch.object(self.uuid, 'getnode', return_value=93328246233727), \
mock.patch('time.time_ns', return_value=1545052026752910643), \
mock.patch('random.getrandbits', return_value=5317): # guaranteed to be random
u = self.uuid.uuid1()
self.assertEqual(u, self.uuid.UUID('a7a55b92-01fc-11e9-94c5-54e1acf6da7f'))
with mock.patch.object(self.uuid, '_has_uuid_generate_time_safe', False), \
mock.patch.object(self.uuid, '_generate_time_safe', None), \
mock.patch.object(self.uuid, '_last_timestamp', None), \
mock.patch('time.time_ns', return_value=1545052026752910643):
u = self.uuid.uuid1(node=93328246233727, clock_seq=5317)
self.assertEqual(u, self.uuid.UUID('a7a55b92-01fc-11e9-94c5-54e1acf6da7f'))
def test_uuid3(self):
equal = self.assertEqual