diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_types.py | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py index 8e9dd72066..18ab9cc84b 100644 --- a/Lib/test/test_types.py +++ b/Lib/test/test_types.py @@ -601,10 +601,25 @@ class TypesTests(unittest.TestCase): test(-1.0, ' f', '-1.000000') test( 1.0, '+f', '+1.000000') test(-1.0, '+f', '-1.000000') - test(1.1234e90, 'f', '1.1234e+90') - test(1.1234e90, 'F', '1.1234e+90') - test(1.1234e200, 'f', '1.1234e+200') - test(1.1234e200, 'F', '1.1234e+200') + + # Python versions <= 2.6 switched from 'f' to 'g' formatting for + # values larger than 1e50. No longer. + f = 1.1234e90 + for fmt in 'f', 'F': + # don't do a direct equality check, since on some + # platforms only the first few digits of dtoa + # will be reliable + result = f.__format__(fmt) + self.assertEqual(len(result), 98) + self.assertEqual(result[-7], '.') + self.assertTrue(result[:12] in ('112340000000', '112339999999')) + f = 1.1234e200 + for fmt in 'f', 'F': + result = f.__format__(fmt) + self.assertEqual(len(result), 208) + self.assertEqual(result[-7], '.') + self.assertTrue(result[:12] in ('112340000000', '112339999999')) + test( 1.0, 'e', '1.000000e+00') test(-1.0, 'e', '-1.000000e+00') |