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1 import sys |
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2 from test import test_support, list_tests |
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3 |
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4 class ListTest(list_tests.CommonTest): |
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5 type2test = list |
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6 |
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7 def test_basic(self): |
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8 self.assertEqual(list([]), []) |
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9 l0_3 = [0, 1, 2, 3] |
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10 l0_3_bis = list(l0_3) |
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11 self.assertEqual(l0_3, l0_3_bis) |
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12 self.assert_(l0_3 is not l0_3_bis) |
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13 self.assertEqual(list(()), []) |
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14 self.assertEqual(list((0, 1, 2, 3)), [0, 1, 2, 3]) |
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15 self.assertEqual(list(''), []) |
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16 self.assertEqual(list('spam'), ['s', 'p', 'a', 'm']) |
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17 |
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18 if sys.maxsize == 0x7fffffff: |
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19 # This test can currently only work on 32-bit machines. |
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20 # XXX If/when PySequence_Length() returns a ssize_t, it should be |
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21 # XXX re-enabled. |
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22 # Verify clearing of bug #556025. |
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23 # This assumes that the max data size (sys.maxint) == max |
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24 # address size this also assumes that the address size is at |
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25 # least 4 bytes with 8 byte addresses, the bug is not well |
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26 # tested |
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27 # |
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28 # Note: This test is expected to SEGV under Cygwin 1.3.12 or |
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29 # earlier due to a newlib bug. See the following mailing list |
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30 # thread for the details: |
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31 |
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32 # http://sources.redhat.com/ml/newlib/2002/msg00369.html |
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33 self.assertRaises(MemoryError, list, xrange(sys.maxint // 2)) |
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34 |
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35 # This code used to segfault in Py2.4a3 |
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36 x = [] |
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37 x.extend(-y for y in x) |
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38 self.assertEqual(x, []) |
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39 |
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40 def test_truth(self): |
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41 super(ListTest, self).test_truth() |
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42 self.assert_(not []) |
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43 self.assert_([42]) |
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44 |
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45 def test_identity(self): |
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46 self.assert_([] is not []) |
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47 |
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48 def test_len(self): |
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49 super(ListTest, self).test_len() |
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50 self.assertEqual(len([]), 0) |
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51 self.assertEqual(len([0]), 1) |
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52 self.assertEqual(len([0, 1, 2]), 3) |
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53 |
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54 def test_overflow(self): |
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55 lst = [4, 5, 6, 7] |
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56 n = int((sys.maxint*2+2) // len(lst)) |
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57 def mul(a, b): return a * b |
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58 def imul(a, b): a *= b |
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59 self.assertRaises((MemoryError, OverflowError), mul, lst, n) |
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60 self.assertRaises((MemoryError, OverflowError), imul, lst, n) |
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61 |
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62 def test_main(verbose=None): |
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63 test_support.run_unittest(ListTest) |
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64 |
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65 # verify reference counting |
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66 import sys |
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67 if verbose and hasattr(sys, "gettotalrefcount"): |
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68 import gc |
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69 counts = [None] * 5 |
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70 for i in xrange(len(counts)): |
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71 test_support.run_unittest(ListTest) |
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72 gc.collect() |
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73 counts[i] = sys.gettotalrefcount() |
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74 print counts |
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75 |
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76 |
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77 if __name__ == "__main__": |
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78 test_main(verbose=True) |