| 1 | n/a | """Test compiler changes for unary ops (+, -, ~) introduced in Python 2.2""" |
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| 2 | n/a | |
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| 3 | n/a | import unittest |
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| 4 | n/a | |
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| 5 | n/a | class UnaryOpTestCase(unittest.TestCase): |
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| 6 | n/a | |
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| 7 | n/a | def test_negative(self): |
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| 8 | n/a | self.assertTrue(-2 == 0 - 2) |
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| 9 | n/a | self.assertEqual(-0, 0) |
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| 10 | n/a | self.assertEqual(--2, 2) |
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| 11 | n/a | self.assertTrue(-2 == 0 - 2) |
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| 12 | n/a | self.assertTrue(-2.0 == 0 - 2.0) |
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| 13 | n/a | self.assertTrue(-2j == 0 - 2j) |
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| 14 | n/a | |
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| 15 | n/a | def test_positive(self): |
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| 16 | n/a | self.assertEqual(+2, 2) |
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| 17 | n/a | self.assertEqual(+0, 0) |
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| 18 | n/a | self.assertEqual(++2, 2) |
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| 19 | n/a | self.assertEqual(+2, 2) |
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| 20 | n/a | self.assertEqual(+2.0, 2.0) |
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| 21 | n/a | self.assertEqual(+2j, 2j) |
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| 22 | n/a | |
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| 23 | n/a | def test_invert(self): |
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| 24 | n/a | self.assertTrue(-2 == 0 - 2) |
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| 25 | n/a | self.assertEqual(-0, 0) |
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| 26 | n/a | self.assertEqual(--2, 2) |
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| 27 | n/a | self.assertTrue(-2 == 0 - 2) |
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| 28 | n/a | |
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| 29 | n/a | def test_no_overflow(self): |
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| 30 | n/a | nines = "9" * 32 |
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| 31 | n/a | self.assertTrue(eval("+" + nines) == 10**32-1) |
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| 32 | n/a | self.assertTrue(eval("-" + nines) == -(10**32-1)) |
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| 33 | n/a | self.assertTrue(eval("~" + nines) == ~(10**32-1)) |
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| 34 | n/a | |
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| 35 | n/a | def test_negation_of_exponentiation(self): |
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| 36 | n/a | # Make sure '**' does the right thing; these form a |
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| 37 | n/a | # regression test for SourceForge bug #456756. |
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| 38 | n/a | self.assertEqual(-2 ** 3, -8) |
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| 39 | n/a | self.assertEqual((-2) ** 3, -8) |
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| 40 | n/a | self.assertEqual(-2 ** 4, -16) |
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| 41 | n/a | self.assertEqual((-2) ** 4, 16) |
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| 42 | n/a | |
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| 43 | n/a | def test_bad_types(self): |
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| 44 | n/a | for op in '+', '-', '~': |
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| 45 | n/a | self.assertRaises(TypeError, eval, op + "b'a'") |
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| 46 | n/a | self.assertRaises(TypeError, eval, op + "'a'") |
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| 47 | n/a | |
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| 48 | n/a | self.assertRaises(TypeError, eval, "~2j") |
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| 49 | n/a | self.assertRaises(TypeError, eval, "~2.0") |
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| 50 | n/a | |
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| 51 | n/a | |
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| 52 | n/a | if __name__ == "__main__": |
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| 53 | n/a | unittest.main() |
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