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Update test/test_unpack.py from CPython 3.11.2 #4676

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Merged
youknowone merged 1 commit into from
Mar 9, 2023
Merged

Update test/test_unpack.py from CPython 3.11.2 #4676

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30 changes: 25 additions & 5 deletions Lib/test/test_unpack.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,7 @@
import doctest
import unittest


doctests = """

Unpack tuple
Expand Down Expand Up @@ -142,10 +146,26 @@

__test__ = {'doctests' : doctests}

def test_main(verbose=False):
from test import support
from test import test_unpack
support.run_doctest(test_unpack, verbose)
def load_tests(loader, tests, pattern):
tests.addTest(doctest.DocTestSuite())
return tests


class TestCornerCases(unittest.TestCase):
def test_extended_oparg_not_ignored(self):
# https://github.com/python/cpython/issues/91625
target = "(" + "y,"*400 + ")"
code = f"""def unpack_400(x):
{target} = x
return y
"""
ns = {}
exec(code, ns)
unpack_400 = ns["unpack_400"]
# Warm up the the function for quickening (PEP 659)
for _ in range(30):
y = unpack_400(range(400))
self.assertEqual(y, 399)

if __name__ == "__main__":
test_main(verbose=True)
unittest.main()