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| author | Facundo Batista <facundobatista@gmail.com> | 2008-07-24 18:57:11 (GMT) |
|---|---|---|
| committer | Facundo Batista <facundobatista@gmail.com> | 2008-07-24 18:57:11 (GMT) |
| commit | 6e6f59b1c9fc01d2cf0404c775214819e6f07b34 (patch) | |
| tree | ea9e73c3c38651115e4adf5195a5171076482bc8 /Lib/test/test_long.py | |
| parent | 00c88f090db65fbe782b46e0ac0b1b08dbb42044 (diff) | |
| download | cpython-6e6f59b1c9fc01d2cf0404c775214819e6f07b34.zip cpython-6e6f59b1c9fc01d2cf0404c775214819e6f07b34.tar.gz cpython-6e6f59b1c9fc01d2cf0404c775214819e6f07b34.tar.bz2 | |
Optimization to stop creating new small longs and use the
one previously stored. Issue 2417.
Diffstat (limited to 'Lib/test/test_long.py')
| -rw-r--r-- | Lib/test/test_long.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Lib/test/test_long.py b/Lib/test/test_long.py index b00f736..c475878 100644 --- a/Lib/test/test_long.py +++ b/Lib/test/test_long.py @@ -805,6 +805,24 @@ class LongTest(unittest.TestCase): self.assertRaises(ZeroDivisionError, eval, zero, namespace) + def test_small_ints(self): + for i in range(-5, 257): + self.assertTrue(i is i + 0) + self.assertTrue(i is i * 1) + self.assertTrue(i is i - 0) + self.assertTrue(i is i // 1) + self.assertTrue(i is i & -1) + self.assertTrue(i is i | 0) + self.assertTrue(i is i ^ 0) + self.assertTrue(i is ~~i) + self.assertTrue(i is i**1) + self.assertTrue(i is int(str(i))) + self.assertTrue(i is i<<2>>2, str(i)) + # corner cases + i = 1 << 70 + self.assertTrue(i - i is 0) + self.assertTrue(0 * i is 0) + def test_main(): support.run_unittest(LongTest) |