author | William Roberts <williamr@symbian.org> |
Tue, 04 Aug 2009 11:50:27 +0100 | |
changeset 3 | c2946f91d81f |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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from __future__ import division |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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# When true division is the default, get rid of this and add it to |
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# test_long.py instead. In the meantime, it's too obscure to try to |
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# trick just part of test_long into using future division. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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import unittest |
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from test.test_support import run_unittest |
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class TrueDivisionTests(unittest.TestCase): |
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def test(self): |
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huge = 1L << 40000 |
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mhuge = -huge |
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self.assertEqual(huge / huge, 1.0) |
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self.assertEqual(mhuge / mhuge, 1.0) |
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self.assertEqual(huge / mhuge, -1.0) |
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self.assertEqual(mhuge / huge, -1.0) |
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self.assertEqual(1 / huge, 0.0) |
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self.assertEqual(1L / huge, 0.0) |
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self.assertEqual(1 / mhuge, 0.0) |
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self.assertEqual(1L / mhuge, 0.0) |
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self.assertEqual((666 * huge + (huge >> 1)) / huge, 666.5) |
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self.assertEqual((666 * mhuge + (mhuge >> 1)) / mhuge, 666.5) |
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self.assertEqual((666 * huge + (huge >> 1)) / mhuge, -666.5) |
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self.assertEqual((666 * mhuge + (mhuge >> 1)) / huge, -666.5) |
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self.assertEqual(huge / (huge << 1), 0.5) |
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self.assertEqual((1000000 * huge) / huge, 1000000) |
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namespace = {'huge': huge, 'mhuge': mhuge} |
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for overflow in ["float(huge)", "float(mhuge)", |
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"huge / 1", "huge / 2L", "huge / -1", "huge / -2L", |
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"mhuge / 100", "mhuge / 100L"]: |
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# XXX(cwinter) this test doesn't pass when converted to |
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# use assertRaises. |
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try: |
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eval(overflow, namespace) |
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self.fail("expected OverflowError from %r" % overflow) |
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except OverflowError: |
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pass |
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for underflow in ["1 / huge", "2L / huge", "-1 / huge", "-2L / huge", |
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"100 / mhuge", "100L / mhuge"]: |
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result = eval(underflow, namespace) |
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self.assertEqual(result, 0.0, |
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"expected underflow to 0 from %r" % underflow) |
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for zero in ["huge / 0", "huge / 0L", "mhuge / 0", "mhuge / 0L"]: |
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self.assertRaises(ZeroDivisionError, eval, zero, namespace) |
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def test_main(): |
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run_unittest(TrueDivisionTests) |
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if __name__ == "__main__": |
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test_main() |