diff options
Diffstat (limited to 'Lib/test/test_float.py')
| -rw-r--r-- | Lib/test/test_float.py | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Lib/test/test_float.py b/Lib/test/test_float.py index 971c14f..1c6c412 100644 --- a/Lib/test/test_float.py +++ b/Lib/test/test_float.py @@ -257,6 +257,53 @@ class IEEEFormatTestCase(unittest.TestCase): self.assertEquals(math.atan2(float('-1e-1000'), -1), math.atan2(-0.0, -1)) + def test_format(self): + # these should be rewritten to use both format(x, spec) and + # x.__format__(spec) + + self.assertEqual(format(0.0, 'f'), '0.000000') + + # the default is 'g', except for empty format spec + self.assertEqual(format(0.0, ''), '0.0') + self.assertEqual(format(0.01, ''), '0.01') + self.assertEqual(format(0.01, 'g'), '0.01') + + # empty presentation type should format in the same way as str + # (issue 5920) + x = 100/7. + self.assertEqual(format(x, ''), str(x)) + self.assertEqual(format(x, '-'), str(x)) + self.assertEqual(format(x, '>'), str(x)) + self.assertEqual(format(x, '2'), str(x)) + + self.assertEqual(format(1.0, 'f'), '1.000000') + + self.assertEqual(format(-1.0, 'f'), '-1.000000') + + self.assertEqual(format( 1.0, ' f'), ' 1.000000') + self.assertEqual(format(-1.0, ' f'), '-1.000000') + self.assertEqual(format( 1.0, '+f'), '+1.000000') + self.assertEqual(format(-1.0, '+f'), '-1.000000') + + # % formatting + self.assertEqual(format(-1.0, '%'), '-100.000000%') + + # conversion to string should fail + self.assertRaises(ValueError, format, 3.0, "s") + + # other format specifiers shouldn't work on floats, + # in particular int specifiers + for format_spec in ([chr(x) for x in range(ord('a'), ord('z')+1)] + + [chr(x) for x in range(ord('A'), ord('Z')+1)]): + if not format_spec in 'eEfFgGn%': + self.assertRaises(ValueError, format, 0.0, format_spec) + self.assertRaises(ValueError, format, 1.0, format_spec) + self.assertRaises(ValueError, format, -1.0, format_spec) + self.assertRaises(ValueError, format, 1e100, format_spec) + self.assertRaises(ValueError, format, -1e100, format_spec) + self.assertRaises(ValueError, format, 1e-100, format_spec) + self.assertRaises(ValueError, format, -1e-100, format_spec) + @unittest.skipUnless(float.__getformat__("double").startswith("IEEE"), "test requires IEEE 754 doubles") def test_format_testfile(self): |