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126 lines
4.1 KiB
Python
126 lines
4.1 KiB
Python
import sys
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from test import support, list_tests
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import pickle
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class ListTest(list_tests.CommonTest):
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type2test = list
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def test_basic(self):
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self.assertEqual(list([]), [])
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l0_3 = [0, 1, 2, 3]
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l0_3_bis = list(l0_3)
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self.assertEqual(l0_3, l0_3_bis)
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self.assertTrue(l0_3 is not l0_3_bis)
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self.assertEqual(list(()), [])
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self.assertEqual(list((0, 1, 2, 3)), [0, 1, 2, 3])
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self.assertEqual(list(''), [])
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self.assertEqual(list('spam'), ['s', 'p', 'a', 'm'])
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if sys.maxsize == 0x7fffffff:
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# This test can currently only work on 32-bit machines.
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# XXX If/when PySequence_Length() returns a ssize_t, it should be
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# XXX re-enabled.
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# Verify clearing of bug #556025.
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# This assumes that the max data size (sys.maxint) == max
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# address size this also assumes that the address size is at
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# least 4 bytes with 8 byte addresses, the bug is not well
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# tested
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#
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# Note: This test is expected to SEGV under Cygwin 1.3.12 or
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# earlier due to a newlib bug. See the following mailing list
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# thread for the details:
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# http://sources.redhat.com/ml/newlib/2002/msg00369.html
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self.assertRaises(MemoryError, list, range(sys.maxsize // 2))
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# This code used to segfault in Py2.4a3
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x = []
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x.extend(-y for y in x)
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self.assertEqual(x, [])
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def test_truth(self):
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super().test_truth()
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self.assertTrue(not [])
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self.assertTrue([42])
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def test_identity(self):
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self.assertTrue([] is not [])
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def test_len(self):
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super().test_len()
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self.assertEqual(len([]), 0)
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self.assertEqual(len([0]), 1)
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self.assertEqual(len([0, 1, 2]), 3)
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def test_overflow(self):
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lst = [4, 5, 6, 7]
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n = int((sys.maxsize*2+2) // len(lst))
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def mul(a, b): return a * b
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def imul(a, b): a *= b
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self.assertRaises((MemoryError, OverflowError), mul, lst, n)
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self.assertRaises((MemoryError, OverflowError), imul, lst, n)
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def test_repr_large(self):
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# Check the repr of large list objects
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def check(n):
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l = [0] * n
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s = repr(l)
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self.assertEqual(s,
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'[' + ', '.join(['0'] * n) + ']')
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check(10) # check our checking code
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check(1000000)
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def test_iterator_pickle(self):
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# Userlist iterators don't support pickling yet since
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# they are based on generators.
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data = self.type2test([4, 5, 6, 7])
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it = itorg = iter(data)
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d = pickle.dumps(it)
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it = pickle.loads(d)
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self.assertEqual(type(itorg), type(it))
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self.assertEqual(self.type2test(it), self.type2test(data))
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it = pickle.loads(d)
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next(it)
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d = pickle.dumps(it)
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self.assertEqual(self.type2test(it), self.type2test(data)[1:])
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def test_reversed_pickle(self):
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data = self.type2test([4, 5, 6, 7])
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it = itorg = reversed(data)
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d = pickle.dumps(it)
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it = pickle.loads(d)
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self.assertEqual(type(itorg), type(it))
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self.assertEqual(self.type2test(it), self.type2test(reversed(data)))
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it = pickle.loads(d)
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next(it)
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d = pickle.dumps(it)
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self.assertEqual(self.type2test(it), self.type2test(reversed(data))[1:])
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def test_no_comdat_folding(self):
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# Issue 8847: In the PGO build, the MSVC linker's COMDAT folding
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# optimization causes failures in code that relies on distinct
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# function addresses.
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class L(list): pass
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with self.assertRaises(TypeError):
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(3,) + L([1,2])
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def test_main(verbose=None):
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support.run_unittest(ListTest)
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# verify reference counting
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import sys
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if verbose and hasattr(sys, "gettotalrefcount"):
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import gc
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counts = [None] * 5
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for i in range(len(counts)):
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support.run_unittest(ListTest)
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gc.collect()
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counts[i] = sys.gettotalrefcount()
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print(counts)
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if __name__ == "__main__":
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test_main(verbose=True)
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