60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
"""Test compiler changes for unary ops (+, -, ~) introduced in Python 2.2"""
|
|
|
|
import unittest
|
|
from test.test_support import run_unittest, have_unicode
|
|
|
|
class UnaryOpTestCase(unittest.TestCase):
|
|
|
|
def test_negative(self):
|
|
self.assertTrue(-2 == 0 - 2)
|
|
self.assertTrue(-0 == 0)
|
|
self.assertTrue(--2 == 2)
|
|
self.assertTrue(-2L == 0 - 2L)
|
|
self.assertTrue(-2.0 == 0 - 2.0)
|
|
self.assertTrue(-2j == 0 - 2j)
|
|
|
|
def test_positive(self):
|
|
self.assertTrue(+2 == 2)
|
|
self.assertTrue(+0 == 0)
|
|
self.assertTrue(++2 == 2)
|
|
self.assertTrue(+2L == 2L)
|
|
self.assertTrue(+2.0 == 2.0)
|
|
self.assertTrue(+2j == 2j)
|
|
|
|
def test_invert(self):
|
|
self.assertTrue(-2 == 0 - 2)
|
|
self.assertTrue(-0 == 0)
|
|
self.assertTrue(--2 == 2)
|
|
self.assertTrue(-2L == 0 - 2L)
|
|
|
|
def test_no_overflow(self):
|
|
nines = "9" * 32
|
|
self.assertTrue(eval("+" + nines) == eval("+" + nines + "L"))
|
|
self.assertTrue(eval("-" + nines) == eval("-" + nines + "L"))
|
|
self.assertTrue(eval("~" + nines) == eval("~" + nines + "L"))
|
|
|
|
def test_negation_of_exponentiation(self):
|
|
# Make sure '**' does the right thing; these form a
|
|
# regression test for SourceForge bug #456756.
|
|
self.assertEqual(-2 ** 3, -8)
|
|
self.assertEqual((-2) ** 3, -8)
|
|
self.assertEqual(-2 ** 4, -16)
|
|
self.assertEqual((-2) ** 4, 16)
|
|
|
|
def test_bad_types(self):
|
|
for op in '+', '-', '~':
|
|
self.assertRaises(TypeError, eval, op + "'a'")
|
|
if have_unicode:
|
|
self.assertRaises(TypeError, eval, op + "u'a'")
|
|
|
|
self.assertRaises(TypeError, eval, "~2j")
|
|
self.assertRaises(TypeError, eval, "~2.0")
|
|
|
|
|
|
def test_main():
|
|
run_unittest(UnaryOpTestCase)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|