109 lines
3.0 KiB
Python
109 lines
3.0 KiB
Python
from collections import deque
|
|
from test.support import run_unittest
|
|
import unittest
|
|
|
|
|
|
class base_set:
|
|
def __init__(self, el):
|
|
self.el = el
|
|
|
|
class myset(base_set):
|
|
def __contains__(self, el):
|
|
return self.el == el
|
|
|
|
class seq(base_set):
|
|
def __getitem__(self, n):
|
|
return [self.el][n]
|
|
|
|
class TestContains(unittest.TestCase):
|
|
def test_common_tests(self):
|
|
a = base_set(1)
|
|
b = myset(1)
|
|
c = seq(1)
|
|
self.assert_(1 in b)
|
|
self.assert_(0 not in b)
|
|
self.assert_(1 in c)
|
|
self.assert_(0 not in c)
|
|
self.assertRaises(TypeError, lambda: 1 in a)
|
|
self.assertRaises(TypeError, lambda: 1 not in a)
|
|
|
|
# test char in string
|
|
self.assert_('c' in 'abc')
|
|
self.assert_('d' not in 'abc')
|
|
|
|
self.assert_('' in '')
|
|
self.assert_('' in 'abc')
|
|
|
|
self.assertRaises(TypeError, lambda: None in 'abc')
|
|
|
|
def test_builtin_sequence_types(self):
|
|
# a collection of tests on builtin sequence types
|
|
a = range(10)
|
|
for i in a:
|
|
self.assert_(i in a)
|
|
self.assert_(16 not in a)
|
|
self.assert_(a not in a)
|
|
|
|
a = tuple(a)
|
|
for i in a:
|
|
self.assert_(i in a)
|
|
self.assert_(16 not in a)
|
|
self.assert_(a not in a)
|
|
|
|
class Deviant1:
|
|
"""Behaves strangely when compared
|
|
|
|
This class is designed to make sure that the contains code
|
|
works when the list is modified during the check.
|
|
"""
|
|
aList = range(15)
|
|
def __cmp__(self, other):
|
|
if other == 12:
|
|
self.aList.remove(12)
|
|
self.aList.remove(13)
|
|
self.aList.remove(14)
|
|
return 1
|
|
|
|
self.assert_(Deviant1() not in Deviant1.aList)
|
|
|
|
class Deviant2:
|
|
"""Behaves strangely when compared
|
|
|
|
This class raises an exception during comparison. That in
|
|
turn causes the comparison to fail with a TypeError.
|
|
"""
|
|
def __cmp__(self, other):
|
|
if other == 4:
|
|
raise RuntimeError("gotcha")
|
|
|
|
try:
|
|
self.assert_(Deviant2() not in a)
|
|
except TypeError:
|
|
pass
|
|
|
|
def test_nonreflexive(self):
|
|
# containment and equality tests involving elements that are
|
|
# not necessarily equal to themselves
|
|
|
|
class MyNonReflexive(object):
|
|
def __eq__(self, other):
|
|
return False
|
|
def __hash__(self):
|
|
return 28
|
|
|
|
values = float('nan'), 1, None, 'abc', MyNonReflexive()
|
|
constructors = list, tuple, dict.fromkeys, set, frozenset, deque
|
|
for constructor in constructors:
|
|
container = constructor(values)
|
|
for elem in container:
|
|
self.assert_(elem in container)
|
|
self.assert_(container == constructor(values))
|
|
self.assert_(container == container)
|
|
|
|
|
|
def test_main():
|
|
run_unittest(TestContains)
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|