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[3.12] gh-108963: using random to generate unique string in sys.intern test … (#110216)

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gh-108963: using random to generate unique string in sys.intern test (#109491)

(cherry picked from commit 44b1e4ea48)

Co-authored-by: AN Long <aisk@users.noreply.github.com>
This commit is contained in:
Victor Stinner 2023-10-02 17:48:42 +02:00 • committed by GitHub
parent b61a4da459
commit f911d7ecd9
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1 changed files with 2 additions and 7 deletions
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9
Lib/test/test_sys.py
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@ -4,6 +4,7 @@ import gc
import locale import locale
import operator import operator
import os import os
import random
import struct import struct
import subprocess import subprocess
import sys import sys
@ -19,10 +20,6 @@ import unittest
import warnings import warnings
# count the number of test runs, used to create unique
# strings to intern in test_intern()
INTERN_NUMRUNS = 0
DICT_KEY_STRUCT_FORMAT = 'n2BI2n' DICT_KEY_STRUCT_FORMAT = 'n2BI2n'
class DisplayHookTest(unittest.TestCase): class DisplayHookTest(unittest.TestCase):
@ -685,10 +682,8 @@ class SysModuleTest(unittest.TestCase):
self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding) self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding)
def test_intern(self): def test_intern(self):
global INTERN_NUMRUNS
INTERN_NUMRUNS += 1
self.assertRaises(TypeError, sys.intern) self.assertRaises(TypeError, sys.intern)
s = "never interned before" + str(INTERN_NUMRUNS) s = "never interned before" + str(random.randrange(0, 10**9))
self.assertTrue(sys.intern(s) is s) self.assertTrue(sys.intern(s) is s)
s2 = s.swapcase().swapcase() s2 = s.swapcase().swapcase()
self.assertTrue(sys.intern(s2) is s) self.assertTrue(sys.intern(s2) is s)