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| author | Victor Stinner <victor.stinner@gmail.com> | 2013-06-23 12:54:30 (GMT) |
|---|---|---|
| committer | Victor Stinner <victor.stinner@gmail.com> | 2013-06-23 12:54:30 (GMT) |
| commit | 2f084ecfe78472b6a1a6c8b07472672176d4f848 (patch) | |
| tree | 0a4c0948defc6a3019553b48800f2f2b4656368b /Lib/test/test_format.py | |
| parent | da30acf50b4ccf6751cdd6c786cbab283865a79f (diff) | |
| download | cpython-2f084ecfe78472b6a1a6c8b07472672176d4f848.zip cpython-2f084ecfe78472b6a1a6c8b07472672176d4f848.tar.gz cpython-2f084ecfe78472b6a1a6c8b07472672176d4f848.tar.bz2 | |
Issue #18137: Detect integer overflow on precision in float.__format__() and
complex.__format__().
Diffstat (limited to 'Lib/test/test_format.py')
| -rw-r--r-- | Lib/test/test_format.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Lib/test/test_format.py b/Lib/test/test_format.py index f8f5420..bd159f5 100644 --- a/Lib/test/test_format.py +++ b/Lib/test/test_format.py @@ -312,6 +312,23 @@ class FormatTest(unittest.TestCase): def test_main(): support.run_unittest(FormatTest) + def test_precision(self): + INT_MAX = 2147483647 + + f = 1.2 + self.assertEqual(format(f, ".0f"), "1") + self.assertEqual(format(f, ".3f"), "1.200") + with self.assertRaises(ValueError) as cm: + format(f, ".%sf" % (INT_MAX + 1)) + self.assertEqual(str(cm.exception), "precision too big") + + c = complex(f) + self.assertEqual(format(f, ".0f"), "1") + self.assertEqual(format(f, ".3f"), "1.200") + with self.assertRaises(ValueError) as cm: + format(f, ".%sf" % (INT_MAX + 1)) + self.assertEqual(str(cm.exception), "precision too big") + if __name__ == "__main__": unittest.main() |