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from test import test_support
from test.test_support import bigaddrspacetest, MAX_Py_ssize_t
import unittest
import operator
import sys
class StrTest(unittest.TestCase):
@bigaddrspacetest
def test_concat(self):
s1 = 'x' * MAX_Py_ssize_t
self.assertRaises(OverflowError, operator.add, s1, '?')
@bigaddrspacetest
def test_optimized_concat(self):
x = 'x' * MAX_Py_ssize_t
try:
x = x + '?' # this statement uses a fast path in ceval.c
except OverflowError:
pass
else:
self.fail("should have raised OverflowError")
try:
x += '?' # this statement uses a fast path in ceval.c
except OverflowError:
pass
else:
self.fail("should have raised OverflowError")
self.assertEqual(len(x), MAX_Py_ssize_t)
### the following test is pending a patch
# (http://mail.python.org/pipermail/python-dev/2006-July/067774.html)
#@bigaddrspacetest
#def test_repeat(self):
# self.assertRaises(OverflowError, operator.mul, 'x', MAX_Py_ssize_t + 1)
def test_main():
test_support.run_unittest(StrTest)
if __name__ == '__main__':
if len(sys.argv) > 1:
test_support.set_memlimit(sys.argv[1])
test_main()