112 lines
3.1 KiB
Python
112 lines
3.1 KiB
Python
from test.test_support import have_unicode, 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.assertIn(1, b)
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self.assertNotIn(0, b)
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self.assertIn(1, c)
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self.assertNotIn(0, 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.assertIn('c', 'abc')
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self.assertNotIn('d', 'abc')
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self.assertIn('', '')
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self.assertIn('', 'abc')
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self.assertRaises(TypeError, lambda: None in 'abc')
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if have_unicode:
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def test_char_in_unicode(self):
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self.assertIn('c', unicode('abc'))
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self.assertNotIn('d', unicode('abc'))
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self.assertIn('', unicode(''))
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self.assertIn(unicode(''), '')
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self.assertIn(unicode(''), unicode(''))
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self.assertIn('', unicode('abc'))
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self.assertIn(unicode(''), 'abc')
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self.assertIn(unicode(''), unicode('abc'))
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self.assertRaises(TypeError, lambda: None in unicode('abc'))
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# test Unicode char in Unicode
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self.assertIn(unicode('c'), unicode('abc'))
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self.assertNotIn(unicode('d'), unicode('abc'))
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# test Unicode char in string
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self.assertIn(unicode('c'), 'abc')
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self.assertNotIn(unicode('d'), '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.assertIn(i, a)
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self.assertNotIn(16, a)
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self.assertNotIn(a, a)
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a = tuple(a)
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for i in a:
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self.assertIn(i, a)
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self.assertNotIn(16, a)
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self.assertNotIn(a, 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.assertNotIn(Deviant1(), 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.assertNotIn(Deviant2(), 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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