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import unittest
import sys
from test.support import import_helper
# Skip this test if the _testcapi module isn't available.
_testcapi = import_helper.import_module('_testcapi')
class LongTests(unittest.TestCase):
def test_compact(self):
for n in {
# Edge cases
*(2**n for n in range(66)),
*(-2**n for n in range(66)),
*(2**n - 1 for n in range(66)),
*(-2**n + 1 for n in range(66)),
# Essentially random
*(37**n for n in range(14)),
*(-37**n for n in range(14)),
}:
with self.subTest(n=n):
is_compact, value = _testcapi.call_long_compact_api(n)
if is_compact:
self.assertEqual(n, value)
def test_compact_known(self):
# Sanity-check some implementation details (we don't guarantee
# that these are/aren't compact)
self.assertEqual(_testcapi.call_long_compact_api(-1), (True, -1))
self.assertEqual(_testcapi.call_long_compact_api(0), (True, 0))
self.assertEqual(_testcapi.call_long_compact_api(256), (True, 256))
self.assertEqual(_testcapi.call_long_compact_api(sys.maxsize),
(False, -1))
if __name__ == "__main__":
unittest.main()