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[3.14] gh-136394: Fix race condition in test_zstd (GH-136432) (GH-136506)

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gh-136394: Fix race condition in test_zstd (GH-136432)
(cherry picked from commit f519918ec6c125715d4efc9713ba80e83346e466)

Co-authored-by: Rogdham <3994389+Rogdham@users.noreply.github.com>
This commit is contained in:
Miss Islington (bot) 2025-07-10 15:13:34 +02:00 committed by GitHub
parent 1346049782
commit da8bcfd949
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1 changed files with 6 additions and 2 deletions
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Lib/test/test_zstd.py
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@ -2674,8 +2674,12 @@ class FreeThreadingMethodTests(unittest.TestCase):
input = b'a'* (16*_1K)
num_threads = 8
# gh-136394: the first output of .compress() includes the frame header
# we run the first .compress() call outside of the threaded portion
# to make the test order-independent
comp = ZstdCompressor()
parts = []
parts = [comp.compress(input, ZstdCompressor.FLUSH_BLOCK)]
for _ in range(num_threads):
res = comp.compress(input, ZstdCompressor.FLUSH_BLOCK)
if res:
@ -2684,7 +2688,7 @@ class FreeThreadingMethodTests(unittest.TestCase):
expected = b''.join(parts) + rest1
comp = ZstdCompressor()
output = []
output = [comp.compress(input, ZstdCompressor.FLUSH_BLOCK)]
def run_method(method, input_data, output_data):
res = method(input_data, ZstdCompressor.FLUSH_BLOCK)
if res: