Guido van Rossum | 8ce8a78 | 2007-11-01 19:42:39 +0000 | [diff] [blame] | 1 | import sys |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 2 | from test import support, list_tests |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 3 | import pickle |
Walter Dörwald | 1dde95d | 2003-12-08 11:38:45 +0000 | [diff] [blame] | 4 | |
| 5 | class ListTest(list_tests.CommonTest): |
| 6 | type2test = list |
| 7 | |
Christian Heimes | 81ee3ef | 2008-05-04 22:42:01 +0000 | [diff] [blame] | 8 | def test_basic(self): |
| 9 | self.assertEqual(list([]), []) |
| 10 | l0_3 = [0, 1, 2, 3] |
| 11 | l0_3_bis = list(l0_3) |
| 12 | self.assertEqual(l0_3, l0_3_bis) |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 13 | self.assertTrue(l0_3 is not l0_3_bis) |
Christian Heimes | 81ee3ef | 2008-05-04 22:42:01 +0000 | [diff] [blame] | 14 | self.assertEqual(list(()), []) |
| 15 | self.assertEqual(list((0, 1, 2, 3)), [0, 1, 2, 3]) |
| 16 | self.assertEqual(list(''), []) |
| 17 | self.assertEqual(list('spam'), ['s', 'p', 'a', 'm']) |
| 18 | |
Benjamin Peterson | a786b02 | 2008-08-25 21:05:21 +0000 | [diff] [blame] | 19 | if sys.maxsize == 0x7fffffff: |
| 20 | # This test can currently only work on 32-bit machines. |
| 21 | # XXX If/when PySequence_Length() returns a ssize_t, it should be |
| 22 | # XXX re-enabled. |
| 23 | # Verify clearing of bug #556025. |
| 24 | # This assumes that the max data size (sys.maxint) == max |
| 25 | # address size this also assumes that the address size is at |
| 26 | # least 4 bytes with 8 byte addresses, the bug is not well |
| 27 | # tested |
| 28 | # |
| 29 | # Note: This test is expected to SEGV under Cygwin 1.3.12 or |
| 30 | # earlier due to a newlib bug. See the following mailing list |
| 31 | # thread for the details: |
| 32 | |
| 33 | # http://sources.redhat.com/ml/newlib/2002/msg00369.html |
| 34 | self.assertRaises(MemoryError, list, range(sys.maxsize // 2)) |
| 35 | |
Christian Heimes | 81ee3ef | 2008-05-04 22:42:01 +0000 | [diff] [blame] | 36 | # This code used to segfault in Py2.4a3 |
| 37 | x = [] |
| 38 | x.extend(-y for y in x) |
| 39 | self.assertEqual(x, []) |
| 40 | |
Walter Dörwald | 1dde95d | 2003-12-08 11:38:45 +0000 | [diff] [blame] | 41 | def test_truth(self): |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 42 | super().test_truth() |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 43 | self.assertTrue(not []) |
| 44 | self.assertTrue([42]) |
Walter Dörwald | 1dde95d | 2003-12-08 11:38:45 +0000 | [diff] [blame] | 45 | |
| 46 | def test_identity(self): |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 47 | self.assertTrue([] is not []) |
Walter Dörwald | 1dde95d | 2003-12-08 11:38:45 +0000 | [diff] [blame] | 48 | |
| 49 | def test_len(self): |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 50 | super().test_len() |
Walter Dörwald | 1dde95d | 2003-12-08 11:38:45 +0000 | [diff] [blame] | 51 | self.assertEqual(len([]), 0) |
| 52 | self.assertEqual(len([0]), 1) |
| 53 | self.assertEqual(len([0, 1, 2]), 3) |
| 54 | |
Guido van Rossum | 8ce8a78 | 2007-11-01 19:42:39 +0000 | [diff] [blame] | 55 | def test_overflow(self): |
| 56 | lst = [4, 5, 6, 7] |
Christian Heimes | a37d4c6 | 2007-12-04 23:02:19 +0000 | [diff] [blame] | 57 | n = int((sys.maxsize*2+2) // len(lst)) |
Guido van Rossum | 8ce8a78 | 2007-11-01 19:42:39 +0000 | [diff] [blame] | 58 | def mul(a, b): return a * b |
| 59 | def imul(a, b): a *= b |
| 60 | self.assertRaises((MemoryError, OverflowError), mul, lst, n) |
| 61 | self.assertRaises((MemoryError, OverflowError), imul, lst, n) |
| 62 | |
Antoine Pitrou | eeb7eea | 2011-10-06 18:57:27 +0200 | [diff] [blame] | 63 | def test_repr_large(self): |
| 64 | # Check the repr of large list objects |
| 65 | def check(n): |
| 66 | l = [0] * n |
| 67 | s = repr(l) |
| 68 | self.assertEqual(s, |
| 69 | '[' + ', '.join(['0'] * n) + ']') |
| 70 | check(10) # check our checking code |
| 71 | check(1000000) |
| 72 | |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 73 | def test_iterator_pickle(self): |
| 74 | # Userlist iterators don't support pickling yet since |
| 75 | # they are based on generators. |
| 76 | data = self.type2test([4, 5, 6, 7]) |
| 77 | it = itorg = iter(data) |
| 78 | d = pickle.dumps(it) |
| 79 | it = pickle.loads(d) |
| 80 | self.assertEqual(type(itorg), type(it)) |
| 81 | self.assertEqual(self.type2test(it), self.type2test(data)) |
| 82 | |
| 83 | it = pickle.loads(d) |
| 84 | next(it) |
| 85 | d = pickle.dumps(it) |
| 86 | self.assertEqual(self.type2test(it), self.type2test(data)[1:]) |
| 87 | |
| 88 | def test_reversed_pickle(self): |
| 89 | data = self.type2test([4, 5, 6, 7]) |
| 90 | it = itorg = reversed(data) |
| 91 | d = pickle.dumps(it) |
| 92 | it = pickle.loads(d) |
| 93 | self.assertEqual(type(itorg), type(it)) |
| 94 | self.assertEqual(self.type2test(it), self.type2test(reversed(data))) |
| 95 | |
| 96 | it = pickle.loads(d) |
| 97 | next(it) |
| 98 | d = pickle.dumps(it) |
| 99 | self.assertEqual(self.type2test(it), self.type2test(reversed(data))[1:]) |
Antoine Pitrou | eeb7eea | 2011-10-06 18:57:27 +0200 | [diff] [blame] | 100 | |
Martin v. Löwis | 4c1730d | 2012-08-01 10:32:11 +0200 | [diff] [blame] | 101 | def test_no_comdat_folding(self): |
| 102 | # Issue 8847: In the PGO build, the MSVC linker's COMDAT folding |
| 103 | # optimization causes failures in code that relies on distinct |
| 104 | # function addresses. |
| 105 | class L(list): pass |
| 106 | with self.assertRaises(TypeError): |
| 107 | (3,) + L([1,2]) |
| 108 | |
Raymond Hettinger | bcab2b2 | 2004-09-29 08:03:17 +0000 | [diff] [blame] | 109 | def test_main(verbose=None): |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 110 | support.run_unittest(ListTest) |
Walter Dörwald | 1dde95d | 2003-12-08 11:38:45 +0000 | [diff] [blame] | 111 | |
Raymond Hettinger | bcab2b2 | 2004-09-29 08:03:17 +0000 | [diff] [blame] | 112 | # verify reference counting |
| 113 | import sys |
| 114 | if verbose and hasattr(sys, "gettotalrefcount"): |
| 115 | import gc |
| 116 | counts = [None] * 5 |
Guido van Rossum | 805365e | 2007-05-07 22:24:25 +0000 | [diff] [blame] | 117 | for i in range(len(counts)): |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 118 | support.run_unittest(ListTest) |
Raymond Hettinger | bcab2b2 | 2004-09-29 08:03:17 +0000 | [diff] [blame] | 119 | gc.collect() |
| 120 | counts[i] = sys.gettotalrefcount() |
Guido van Rossum | be19ed7 | 2007-02-09 05:37:30 +0000 | [diff] [blame] | 121 | print(counts) |
Raymond Hettinger | bcab2b2 | 2004-09-29 08:03:17 +0000 | [diff] [blame] | 122 | |
| 123 | |
| 124 | if __name__ == "__main__": |
| 125 | test_main(verbose=True) |