Systematic testing of hex/oct constants.

This commit is contained in:
Guido van Rossum 2003-02-12 17:09:17 +00:00
parent 48035eb452
commit 9c00f42870
1 changed files with 81 additions and 0 deletions

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Lib/test/test_hexoct.py Normal file
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"""Test correct treatment of hex/oct constants.
This is complex because of changes due to PEP 237.
Some of these tests will hvae to change in Python 2.4!
"""
import unittest
from test import test_support
import warnings
warnings.filterwarnings("ignore", "hex/oct constants", FutureWarning,
"<string>")
class TextHexOct(unittest.TestCase):
def test_hex_baseline(self):
# Baseline tests
self.assertEqual(0x0, 0)
self.assertEqual(0x10, 16)
self.assertEqual(0x7fffffff, 2147483647)
# Ditto with a minus sign and parentheses
self.assertEqual(-(0x0), 0)
self.assertEqual(-(0x10), -16)
self.assertEqual(-(0x7fffffff), -2147483647)
# Ditto with a minus sign and NO parentheses
self.assertEqual(-0x0, 0)
self.assertEqual(-0x10, -16)
self.assertEqual(-0x7fffffff, -2147483647)
def test_hex_unsigned(self):
# This test is in a <string> so we can ignore the warnings
exec """if 1:
# Positive-looking constants with negavive values
self.assertEqual(0x80000000, -2147483648L)
self.assertEqual(0xffffffff, -1)
# Ditto with a minus sign and parentheses
self.assertEqual(-(0x80000000), 2147483648L)
self.assertEqual(-(0xffffffff), 1)
# Ditto with a minus sign and NO parentheses
# This failed in Python 2.2 through 2.2.2 and in 2.3a1
self.assertEqual(-0x80000000, 2147483648L)
self.assertEqual(-0xffffffff, 1)
\n"""
def test_oct_baseline(self):
# Baseline tests
self.assertEqual(00, 0)
self.assertEqual(020, 16)
self.assertEqual(017777777777, 2147483647)
# Ditto with a minus sign and parentheses
self.assertEqual(-(00), 0)
self.assertEqual(-(020), -16)
self.assertEqual(-(017777777777), -2147483647)
# Ditto with a minus sign and NO parentheses
self.assertEqual(-00, 0)
self.assertEqual(-020, -16)
self.assertEqual(-017777777777, -2147483647)
def test_oct_unsigned(self):
# This test is in a <string> so we can ignore the warnings
exec """if 1:
# Positive-looking constants with negavive values
self.assertEqual(020000000000, -2147483648L)
self.assertEqual(037777777777, -1)
# Ditto with a minus sign and parentheses
self.assertEqual(-(020000000000), 2147483648L)
self.assertEqual(-(037777777777), 1)
# Ditto with a minus sign and NO parentheses
# This failed in Python 2.2 through 2.2.2 and in 2.3a1
self.assertEqual(-020000000000, 2147483648L)
self.assertEqual(-037777777777, 1)
\n"""
def test_main():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(TextHexOct))
test_support.run_suite(suite)
if __name__ == "__main__":
test_main()