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88 lines
2.3 KiB
Python
88 lines
2.3 KiB
Python
from test.support import run_unittest
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import unittest
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class base_set:
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def __init__(self, el):
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self.el = el
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class set(base_set):
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def __contains__(self, el):
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return self.el == el
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class seq(base_set):
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def __getitem__(self, n):
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return [self.el][n]
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class TestContains(unittest.TestCase):
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def test_common_tests(self):
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a = base_set(1)
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b = set(1)
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c = seq(1)
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self.assert_(1 in b)
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self.assert_(0 not in b)
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self.assert_(1 in c)
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self.assert_(0 not in c)
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self.assertRaises(TypeError, lambda: 1 in a)
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self.assertRaises(TypeError, lambda: 1 not in a)
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# test char in string
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self.assert_('c' in 'abc')
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self.assert_('d' not in 'abc')
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self.assert_('' in '')
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self.assert_('' in 'abc')
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self.assertRaises(TypeError, lambda: None in 'abc')
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def test_builtin_sequence_types(self):
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# a collection of tests on builtin sequence types
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a = range(10)
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for i in a:
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self.assert_(i in a)
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self.assert_(16 not in a)
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self.assert_(a not in a)
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a = tuple(a)
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for i in a:
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self.assert_(i in a)
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self.assert_(16 not in a)
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self.assert_(a not in a)
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class Deviant1:
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"""Behaves strangely when compared
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This class is designed to make sure that the contains code
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works when the list is modified during the check.
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"""
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aList = range(15)
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def __cmp__(self, other):
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if other == 12:
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self.aList.remove(12)
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self.aList.remove(13)
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self.aList.remove(14)
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return 1
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self.assert_(Deviant1() not in Deviant1.aList)
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class Deviant2:
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"""Behaves strangely when compared
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This class raises an exception during comparison. That in
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turn causes the comparison to fail with a TypeError.
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"""
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def __cmp__(self, other):
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if other == 4:
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raise RuntimeError("gotcha")
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try:
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self.assert_(Deviant2() not in a)
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except TypeError:
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pass
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def test_main():
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run_unittest(TestContains)
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if __name__ == '__main__':
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test_main()
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