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bpo-32713: Fix tarfile.itn for large/negative float values. (GH-5434)

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Joffrey F 2018-02-26 16:02:21 -08:00 • committed by Serhiy Storchaka
parent eee72d4778
commit 72d9b2be36
3 changed files with 11 additions and 1 deletions
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8
Lib/test/test_tarfile.py
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@ -2149,6 +2149,14 @@ class MiscTest(unittest.TestCase):
self.assertEqual(tarfile.itn(-0x100000000000000),
b"\xff\x00\x00\x00\x00\x00\x00\x00")
# Issue 32713: Test if itn() supports float values outside the
# non-GNU format range
self.assertEqual(tarfile.itn(-100.0, format=tarfile.GNU_FORMAT),
b"\xff\xff\xff\xff\xff\xff\xff\x9c")
self.assertEqual(tarfile.itn(8 ** 12 + 0.0, format=tarfile.GNU_FORMAT),
b"\x80\x00\x00\x10\x00\x00\x00\x00")
self.assertEqual(tarfile.nti(tarfile.itn(-0.1, format=tarfile.GNU_FORMAT)), 0)
def test_number_field_limits(self):
with self.assertRaises(ValueError):
tarfile.itn(-1, 8, tarfile.USTAR_FORMAT)