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Some more test-size-estimate fixes: test_append and test_insert trigger a

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list resize, which overallocates.
This commit is contained in:
Thomas Wouters 2006-04-26 19:14:46 +00:00
parent cda404bf36
commit b5ccd1416e
1 changed files with 7 additions and 3 deletions
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10
Lib/test/test_bigmem.py
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@ -833,8 +833,9 @@ class ListTest(unittest.TestCase):
def test_repr_large(self, size): def test_repr_large(self, size):
return self.basic_test_repr(size) return self.basic_test_repr(size)
# list overallocates ~1/8th of the total size (on first expansion) so
@bigmemtest(minsize=_2G, memuse=8) # the single list.append call puts memuse at 9 bytes per size.
@bigmemtest(minsize=_2G, memuse=9)
def test_append(self, size): def test_append(self, size):
l = [object()] * size l = [object()] * size
l.append(object()) l.append(object())
@ -872,7 +873,8 @@ class ListTest(unittest.TestCase):
self.assertRaises(ValueError, l.index, 1, size - 4, size) self.assertRaises(ValueError, l.index, 1, size - 4, size)
self.assertRaises(ValueError, l.index, 6L) self.assertRaises(ValueError, l.index, 6L)
@bigmemtest(minsize=_2G + 10, memuse=8) # This tests suffers from overallocation, just like test_append.
@bigmemtest(minsize=_2G + 10, memuse=9)
def test_insert(self, size): def test_insert(self, size):
l = [1.0] * size l = [1.0] * size
l.insert(size - 1, "A") l.insert(size - 1, "A")
@ -920,6 +922,8 @@ class ListTest(unittest.TestCase):
size -= 1 size -= 1
self.assertEquals(len(l), size) self.assertEquals(len(l), size)
# Because of the earlier l.remove(), this append doesn't trigger
# a resize.
l.append(5) l.append(5)
size += 1 size += 1
self.assertEquals(len(l), size) self.assertEquals(len(l), size)