symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_unary.py
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

"""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.assert_(-2 == 0 - 2)
        self.assert_(-0 == 0)
        self.assert_(--2 == 2)
        self.assert_(-2L == 0 - 2L)
        self.assert_(-2.0 == 0 - 2.0)
        self.assert_(-2j == 0 - 2j)

    def test_positive(self):
        self.assert_(+2 == 2)
        self.assert_(+0 == 0)
        self.assert_(++2 == 2)
        self.assert_(+2L == 2L)
        self.assert_(+2.0 == 2.0)
        self.assert_(+2j == 2j)

    def test_invert(self):
        self.assert_(-2 == 0 - 2)
        self.assert_(-0 == 0)
        self.assert_(--2 == 2)
        self.assert_(-2L == 0 - 2L)

    def test_no_overflow(self):
        nines = "9" * 32
        self.assert_(eval("+" + nines) == eval("+" + nines + "L"))
        self.assert_(eval("-" + nines) == eval("-" + nines + "L"))
        self.assert_(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()