mirror of
https://github.com/python/cpython.git
synced 2025-07-16 15:55:18 +00:00
fbb1c5ee06
Affected classes are generic sequence iterators, iterators of str, bytes, bytearray, list, tuple, set, frozenset, dict, OrderedDict, corresponding views and os.scandir() iterator.
1868 lines
63 KiB
Python
1868 lines
63 KiB
Python
import unittest
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from test import support
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import gc
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import weakref
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import operator
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import copy
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import pickle
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from random import randrange, shuffle
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import sys
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import warnings
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import collections
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import collections.abc
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class PassThru(Exception):
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pass
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def check_pass_thru():
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raise PassThru
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yield 1
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class BadCmp:
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def __hash__(self):
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return 1
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def __eq__(self, other):
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raise RuntimeError
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class ReprWrapper:
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'Used to test self-referential repr() calls'
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def __repr__(self):
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return repr(self.value)
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class HashCountingInt(int):
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'int-like object that counts the number of times __hash__ is called'
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def __init__(self, *args):
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self.hash_count = 0
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def __hash__(self):
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self.hash_count += 1
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return int.__hash__(self)
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class TestJointOps:
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# Tests common to both set and frozenset
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def setUp(self):
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self.word = word = 'simsalabim'
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self.otherword = 'madagascar'
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self.letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
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self.s = self.thetype(word)
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self.d = dict.fromkeys(word)
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def test_new_or_init(self):
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self.assertRaises(TypeError, self.thetype, [], 2)
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self.assertRaises(TypeError, set().__init__, a=1)
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def test_uniquification(self):
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actual = sorted(self.s)
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expected = sorted(self.d)
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self.assertEqual(actual, expected)
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self.assertRaises(PassThru, self.thetype, check_pass_thru())
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self.assertRaises(TypeError, self.thetype, [[]])
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def test_len(self):
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self.assertEqual(len(self.s), len(self.d))
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def test_contains(self):
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for c in self.letters:
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self.assertEqual(c in self.s, c in self.d)
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self.assertRaises(TypeError, self.s.__contains__, [[]])
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s = self.thetype([frozenset(self.letters)])
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self.assertIn(self.thetype(self.letters), s)
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def test_union(self):
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u = self.s.union(self.otherword)
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for c in self.letters:
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self.assertEqual(c in u, c in self.d or c in self.otherword)
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self.assertEqual(self.s, self.thetype(self.word))
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self.assertEqual(type(u), self.basetype)
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self.assertRaises(PassThru, self.s.union, check_pass_thru())
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self.assertRaises(TypeError, self.s.union, [[]])
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for C in set, frozenset, dict.fromkeys, str, list, tuple:
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self.assertEqual(self.thetype('abcba').union(C('cdc')), set('abcd'))
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self.assertEqual(self.thetype('abcba').union(C('efgfe')), set('abcefg'))
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self.assertEqual(self.thetype('abcba').union(C('ccb')), set('abc'))
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self.assertEqual(self.thetype('abcba').union(C('ef')), set('abcef'))
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self.assertEqual(self.thetype('abcba').union(C('ef'), C('fg')), set('abcefg'))
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# Issue #6573
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x = self.thetype()
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self.assertEqual(x.union(set([1]), x, set([2])), self.thetype([1, 2]))
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def test_or(self):
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i = self.s.union(self.otherword)
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self.assertEqual(self.s | set(self.otherword), i)
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self.assertEqual(self.s | frozenset(self.otherword), i)
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try:
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self.s | self.otherword
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except TypeError:
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pass
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else:
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self.fail("s|t did not screen-out general iterables")
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def test_intersection(self):
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i = self.s.intersection(self.otherword)
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for c in self.letters:
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self.assertEqual(c in i, c in self.d and c in self.otherword)
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self.assertEqual(self.s, self.thetype(self.word))
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self.assertEqual(type(i), self.basetype)
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self.assertRaises(PassThru, self.s.intersection, check_pass_thru())
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for C in set, frozenset, dict.fromkeys, str, list, tuple:
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self.assertEqual(self.thetype('abcba').intersection(C('cdc')), set('cc'))
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self.assertEqual(self.thetype('abcba').intersection(C('efgfe')), set(''))
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self.assertEqual(self.thetype('abcba').intersection(C('ccb')), set('bc'))
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self.assertEqual(self.thetype('abcba').intersection(C('ef')), set(''))
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self.assertEqual(self.thetype('abcba').intersection(C('cbcf'), C('bag')), set('b'))
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s = self.thetype('abcba')
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z = s.intersection()
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if self.thetype == frozenset():
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self.assertEqual(id(s), id(z))
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else:
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self.assertNotEqual(id(s), id(z))
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def test_isdisjoint(self):
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def f(s1, s2):
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'Pure python equivalent of isdisjoint()'
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return not set(s1).intersection(s2)
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for larg in '', 'a', 'ab', 'abc', 'ababac', 'cdc', 'cc', 'efgfe', 'ccb', 'ef':
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s1 = self.thetype(larg)
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for rarg in '', 'a', 'ab', 'abc', 'ababac', 'cdc', 'cc', 'efgfe', 'ccb', 'ef':
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for C in set, frozenset, dict.fromkeys, str, list, tuple:
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s2 = C(rarg)
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actual = s1.isdisjoint(s2)
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expected = f(s1, s2)
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self.assertEqual(actual, expected)
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self.assertTrue(actual is True or actual is False)
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def test_and(self):
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i = self.s.intersection(self.otherword)
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self.assertEqual(self.s & set(self.otherword), i)
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self.assertEqual(self.s & frozenset(self.otherword), i)
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try:
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self.s & self.otherword
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except TypeError:
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pass
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else:
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self.fail("s&t did not screen-out general iterables")
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def test_difference(self):
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i = self.s.difference(self.otherword)
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for c in self.letters:
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self.assertEqual(c in i, c in self.d and c not in self.otherword)
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self.assertEqual(self.s, self.thetype(self.word))
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self.assertEqual(type(i), self.basetype)
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self.assertRaises(PassThru, self.s.difference, check_pass_thru())
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self.assertRaises(TypeError, self.s.difference, [[]])
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for C in set, frozenset, dict.fromkeys, str, list, tuple:
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self.assertEqual(self.thetype('abcba').difference(C('cdc')), set('ab'))
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self.assertEqual(self.thetype('abcba').difference(C('efgfe')), set('abc'))
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self.assertEqual(self.thetype('abcba').difference(C('ccb')), set('a'))
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self.assertEqual(self.thetype('abcba').difference(C('ef')), set('abc'))
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self.assertEqual(self.thetype('abcba').difference(), set('abc'))
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self.assertEqual(self.thetype('abcba').difference(C('a'), C('b')), set('c'))
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def test_sub(self):
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i = self.s.difference(self.otherword)
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self.assertEqual(self.s - set(self.otherword), i)
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self.assertEqual(self.s - frozenset(self.otherword), i)
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try:
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self.s - self.otherword
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except TypeError:
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pass
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else:
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self.fail("s-t did not screen-out general iterables")
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def test_symmetric_difference(self):
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i = self.s.symmetric_difference(self.otherword)
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for c in self.letters:
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self.assertEqual(c in i, (c in self.d) ^ (c in self.otherword))
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self.assertEqual(self.s, self.thetype(self.word))
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self.assertEqual(type(i), self.basetype)
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self.assertRaises(PassThru, self.s.symmetric_difference, check_pass_thru())
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self.assertRaises(TypeError, self.s.symmetric_difference, [[]])
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for C in set, frozenset, dict.fromkeys, str, list, tuple:
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self.assertEqual(self.thetype('abcba').symmetric_difference(C('cdc')), set('abd'))
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self.assertEqual(self.thetype('abcba').symmetric_difference(C('efgfe')), set('abcefg'))
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self.assertEqual(self.thetype('abcba').symmetric_difference(C('ccb')), set('a'))
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self.assertEqual(self.thetype('abcba').symmetric_difference(C('ef')), set('abcef'))
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def test_xor(self):
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i = self.s.symmetric_difference(self.otherword)
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self.assertEqual(self.s ^ set(self.otherword), i)
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self.assertEqual(self.s ^ frozenset(self.otherword), i)
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try:
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self.s ^ self.otherword
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except TypeError:
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pass
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else:
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self.fail("s^t did not screen-out general iterables")
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def test_equality(self):
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self.assertEqual(self.s, set(self.word))
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self.assertEqual(self.s, frozenset(self.word))
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self.assertEqual(self.s == self.word, False)
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self.assertNotEqual(self.s, set(self.otherword))
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self.assertNotEqual(self.s, frozenset(self.otherword))
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self.assertEqual(self.s != self.word, True)
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def test_setOfFrozensets(self):
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t = map(frozenset, ['abcdef', 'bcd', 'bdcb', 'fed', 'fedccba'])
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s = self.thetype(t)
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self.assertEqual(len(s), 3)
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def test_sub_and_super(self):
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p, q, r = map(self.thetype, ['ab', 'abcde', 'def'])
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self.assertTrue(p < q)
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self.assertTrue(p <= q)
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self.assertTrue(q <= q)
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self.assertTrue(q > p)
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self.assertTrue(q >= p)
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self.assertFalse(q < r)
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self.assertFalse(q <= r)
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self.assertFalse(q > r)
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self.assertFalse(q >= r)
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self.assertTrue(set('a').issubset('abc'))
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self.assertTrue(set('abc').issuperset('a'))
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self.assertFalse(set('a').issubset('cbs'))
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self.assertFalse(set('cbs').issuperset('a'))
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def test_pickling(self):
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for i in range(pickle.HIGHEST_PROTOCOL + 1):
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p = pickle.dumps(self.s, i)
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dup = pickle.loads(p)
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self.assertEqual(self.s, dup, "%s != %s" % (self.s, dup))
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if type(self.s) not in (set, frozenset):
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self.s.x = 10
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p = pickle.dumps(self.s, i)
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dup = pickle.loads(p)
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self.assertEqual(self.s.x, dup.x)
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def test_iterator_pickling(self):
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for proto in range(pickle.HIGHEST_PROTOCOL + 1):
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itorg = iter(self.s)
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data = self.thetype(self.s)
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d = pickle.dumps(itorg, proto)
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it = pickle.loads(d)
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# Set iterators unpickle as list iterators due to the
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# undefined order of set items.
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# self.assertEqual(type(itorg), type(it))
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self.assertIsInstance(it, collections.abc.Iterator)
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self.assertEqual(self.thetype(it), data)
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it = pickle.loads(d)
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try:
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drop = next(it)
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except StopIteration:
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continue
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d = pickle.dumps(it, proto)
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it = pickle.loads(d)
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self.assertEqual(self.thetype(it), data - self.thetype((drop,)))
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def test_deepcopy(self):
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class Tracer:
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def __init__(self, value):
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self.value = value
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def __hash__(self):
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return self.value
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def __deepcopy__(self, memo=None):
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return Tracer(self.value + 1)
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t = Tracer(10)
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s = self.thetype([t])
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dup = copy.deepcopy(s)
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self.assertNotEqual(id(s), id(dup))
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for elem in dup:
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newt = elem
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self.assertNotEqual(id(t), id(newt))
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self.assertEqual(t.value + 1, newt.value)
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def test_gc(self):
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# Create a nest of cycles to exercise overall ref count check
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class A:
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pass
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s = set(A() for i in range(1000))
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for elem in s:
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elem.cycle = s
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elem.sub = elem
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elem.set = set([elem])
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def test_subclass_with_custom_hash(self):
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# Bug #1257731
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class H(self.thetype):
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def __hash__(self):
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return int(id(self) & 0x7fffffff)
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s=H()
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f=set()
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f.add(s)
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self.assertIn(s, f)
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f.remove(s)
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f.add(s)
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f.discard(s)
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def test_badcmp(self):
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s = self.thetype([BadCmp()])
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# Detect comparison errors during insertion and lookup
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self.assertRaises(RuntimeError, self.thetype, [BadCmp(), BadCmp()])
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self.assertRaises(RuntimeError, s.__contains__, BadCmp())
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# Detect errors during mutating operations
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if hasattr(s, 'add'):
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self.assertRaises(RuntimeError, s.add, BadCmp())
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self.assertRaises(RuntimeError, s.discard, BadCmp())
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self.assertRaises(RuntimeError, s.remove, BadCmp())
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def test_cyclical_repr(self):
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w = ReprWrapper()
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s = self.thetype([w])
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w.value = s
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if self.thetype == set:
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self.assertEqual(repr(s), '{set(...)}')
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else:
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name = repr(s).partition('(')[0] # strip class name
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self.assertEqual(repr(s), '%s({%s(...)})' % (name, name))
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def test_cyclical_print(self):
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w = ReprWrapper()
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s = self.thetype([w])
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w.value = s
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fo = open(support.TESTFN, "w")
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try:
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fo.write(str(s))
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fo.close()
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fo = open(support.TESTFN, "r")
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self.assertEqual(fo.read(), repr(s))
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finally:
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fo.close()
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support.unlink(support.TESTFN)
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def test_do_not_rehash_dict_keys(self):
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n = 10
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d = dict.fromkeys(map(HashCountingInt, range(n)))
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self.assertEqual(sum(elem.hash_count for elem in d), n)
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s = self.thetype(d)
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self.assertEqual(sum(elem.hash_count for elem in d), n)
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s.difference(d)
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self.assertEqual(sum(elem.hash_count for elem in d), n)
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if hasattr(s, 'symmetric_difference_update'):
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s.symmetric_difference_update(d)
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self.assertEqual(sum(elem.hash_count for elem in d), n)
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d2 = dict.fromkeys(set(d))
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self.assertEqual(sum(elem.hash_count for elem in d), n)
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d3 = dict.fromkeys(frozenset(d))
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self.assertEqual(sum(elem.hash_count for elem in d), n)
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d3 = dict.fromkeys(frozenset(d), 123)
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self.assertEqual(sum(elem.hash_count for elem in d), n)
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self.assertEqual(d3, dict.fromkeys(d, 123))
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def test_container_iterator(self):
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# Bug #3680: tp_traverse was not implemented for set iterator object
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class C(object):
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pass
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obj = C()
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ref = weakref.ref(obj)
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container = set([obj, 1])
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obj.x = iter(container)
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del obj, container
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gc.collect()
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self.assertTrue(ref() is None, "Cycle was not collected")
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def test_free_after_iterating(self):
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support.check_free_after_iterating(self, iter, self.thetype)
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class TestSet(TestJointOps, unittest.TestCase):
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thetype = set
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basetype = set
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def test_init(self):
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s = self.thetype()
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s.__init__(self.word)
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self.assertEqual(s, set(self.word))
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s.__init__(self.otherword)
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self.assertEqual(s, set(self.otherword))
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self.assertRaises(TypeError, s.__init__, s, 2);
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self.assertRaises(TypeError, s.__init__, 1);
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def test_constructor_identity(self):
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s = self.thetype(range(3))
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t = self.thetype(s)
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self.assertNotEqual(id(s), id(t))
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def test_set_literal(self):
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s = set([1,2,3])
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t = {1,2,3}
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self.assertEqual(s, t)
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def test_hash(self):
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self.assertRaises(TypeError, hash, self.s)
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def test_clear(self):
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self.s.clear()
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self.assertEqual(self.s, set())
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self.assertEqual(len(self.s), 0)
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def test_copy(self):
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dup = self.s.copy()
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self.assertEqual(self.s, dup)
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self.assertNotEqual(id(self.s), id(dup))
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self.assertEqual(type(dup), self.basetype)
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def test_add(self):
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self.s.add('Q')
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self.assertIn('Q', self.s)
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dup = self.s.copy()
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self.s.add('Q')
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self.assertEqual(self.s, dup)
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self.assertRaises(TypeError, self.s.add, [])
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def test_remove(self):
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self.s.remove('a')
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self.assertNotIn('a', self.s)
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self.assertRaises(KeyError, self.s.remove, 'Q')
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self.assertRaises(TypeError, self.s.remove, [])
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s = self.thetype([frozenset(self.word)])
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self.assertIn(self.thetype(self.word), s)
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s.remove(self.thetype(self.word))
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self.assertNotIn(self.thetype(self.word), s)
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self.assertRaises(KeyError, self.s.remove, self.thetype(self.word))
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def test_remove_keyerror_unpacking(self):
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# bug: www.python.org/sf/1576657
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for v1 in ['Q', (1,)]:
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try:
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self.s.remove(v1)
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except KeyError as e:
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v2 = e.args[0]
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self.assertEqual(v1, v2)
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else:
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self.fail()
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def test_remove_keyerror_set(self):
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key = self.thetype([3, 4])
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try:
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self.s.remove(key)
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except KeyError as e:
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self.assertTrue(e.args[0] is key,
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"KeyError should be {0}, not {1}".format(key,
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e.args[0]))
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else:
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self.fail()
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def test_discard(self):
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self.s.discard('a')
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self.assertNotIn('a', self.s)
|
|
self.s.discard('Q')
|
|
self.assertRaises(TypeError, self.s.discard, [])
|
|
s = self.thetype([frozenset(self.word)])
|
|
self.assertIn(self.thetype(self.word), s)
|
|
s.discard(self.thetype(self.word))
|
|
self.assertNotIn(self.thetype(self.word), s)
|
|
s.discard(self.thetype(self.word))
|
|
|
|
def test_pop(self):
|
|
for i in range(len(self.s)):
|
|
elem = self.s.pop()
|
|
self.assertNotIn(elem, self.s)
|
|
self.assertRaises(KeyError, self.s.pop)
|
|
|
|
def test_update(self):
|
|
retval = self.s.update(self.otherword)
|
|
self.assertEqual(retval, None)
|
|
for c in (self.word + self.otherword):
|
|
self.assertIn(c, self.s)
|
|
self.assertRaises(PassThru, self.s.update, check_pass_thru())
|
|
self.assertRaises(TypeError, self.s.update, [[]])
|
|
for p, q in (('cdc', 'abcd'), ('efgfe', 'abcefg'), ('ccb', 'abc'), ('ef', 'abcef')):
|
|
for C in set, frozenset, dict.fromkeys, str, list, tuple:
|
|
s = self.thetype('abcba')
|
|
self.assertEqual(s.update(C(p)), None)
|
|
self.assertEqual(s, set(q))
|
|
for p in ('cdc', 'efgfe', 'ccb', 'ef', 'abcda'):
|
|
q = 'ahi'
|
|
for C in set, frozenset, dict.fromkeys, str, list, tuple:
|
|
s = self.thetype('abcba')
|
|
self.assertEqual(s.update(C(p), C(q)), None)
|
|
self.assertEqual(s, set(s) | set(p) | set(q))
|
|
|
|
def test_ior(self):
|
|
self.s |= set(self.otherword)
|
|
for c in (self.word + self.otherword):
|
|
self.assertIn(c, self.s)
|
|
|
|
def test_intersection_update(self):
|
|
retval = self.s.intersection_update(self.otherword)
|
|
self.assertEqual(retval, None)
|
|
for c in (self.word + self.otherword):
|
|
if c in self.otherword and c in self.word:
|
|
self.assertIn(c, self.s)
|
|
else:
|
|
self.assertNotIn(c, self.s)
|
|
self.assertRaises(PassThru, self.s.intersection_update, check_pass_thru())
|
|
self.assertRaises(TypeError, self.s.intersection_update, [[]])
|
|
for p, q in (('cdc', 'c'), ('efgfe', ''), ('ccb', 'bc'), ('ef', '')):
|
|
for C in set, frozenset, dict.fromkeys, str, list, tuple:
|
|
s = self.thetype('abcba')
|
|
self.assertEqual(s.intersection_update(C(p)), None)
|
|
self.assertEqual(s, set(q))
|
|
ss = 'abcba'
|
|
s = self.thetype(ss)
|
|
t = 'cbc'
|
|
self.assertEqual(s.intersection_update(C(p), C(t)), None)
|
|
self.assertEqual(s, set('abcba')&set(p)&set(t))
|
|
|
|
def test_iand(self):
|
|
self.s &= set(self.otherword)
|
|
for c in (self.word + self.otherword):
|
|
if c in self.otherword and c in self.word:
|
|
self.assertIn(c, self.s)
|
|
else:
|
|
self.assertNotIn(c, self.s)
|
|
|
|
def test_difference_update(self):
|
|
retval = self.s.difference_update(self.otherword)
|
|
self.assertEqual(retval, None)
|
|
for c in (self.word + self.otherword):
|
|
if c in self.word and c not in self.otherword:
|
|
self.assertIn(c, self.s)
|
|
else:
|
|
self.assertNotIn(c, self.s)
|
|
self.assertRaises(PassThru, self.s.difference_update, check_pass_thru())
|
|
self.assertRaises(TypeError, self.s.difference_update, [[]])
|
|
self.assertRaises(TypeError, self.s.symmetric_difference_update, [[]])
|
|
for p, q in (('cdc', 'ab'), ('efgfe', 'abc'), ('ccb', 'a'), ('ef', 'abc')):
|
|
for C in set, frozenset, dict.fromkeys, str, list, tuple:
|
|
s = self.thetype('abcba')
|
|
self.assertEqual(s.difference_update(C(p)), None)
|
|
self.assertEqual(s, set(q))
|
|
|
|
s = self.thetype('abcdefghih')
|
|
s.difference_update()
|
|
self.assertEqual(s, self.thetype('abcdefghih'))
|
|
|
|
s = self.thetype('abcdefghih')
|
|
s.difference_update(C('aba'))
|
|
self.assertEqual(s, self.thetype('cdefghih'))
|
|
|
|
s = self.thetype('abcdefghih')
|
|
s.difference_update(C('cdc'), C('aba'))
|
|
self.assertEqual(s, self.thetype('efghih'))
|
|
|
|
def test_isub(self):
|
|
self.s -= set(self.otherword)
|
|
for c in (self.word + self.otherword):
|
|
if c in self.word and c not in self.otherword:
|
|
self.assertIn(c, self.s)
|
|
else:
|
|
self.assertNotIn(c, self.s)
|
|
|
|
def test_symmetric_difference_update(self):
|
|
retval = self.s.symmetric_difference_update(self.otherword)
|
|
self.assertEqual(retval, None)
|
|
for c in (self.word + self.otherword):
|
|
if (c in self.word) ^ (c in self.otherword):
|
|
self.assertIn(c, self.s)
|
|
else:
|
|
self.assertNotIn(c, self.s)
|
|
self.assertRaises(PassThru, self.s.symmetric_difference_update, check_pass_thru())
|
|
self.assertRaises(TypeError, self.s.symmetric_difference_update, [[]])
|
|
for p, q in (('cdc', 'abd'), ('efgfe', 'abcefg'), ('ccb', 'a'), ('ef', 'abcef')):
|
|
for C in set, frozenset, dict.fromkeys, str, list, tuple:
|
|
s = self.thetype('abcba')
|
|
self.assertEqual(s.symmetric_difference_update(C(p)), None)
|
|
self.assertEqual(s, set(q))
|
|
|
|
def test_ixor(self):
|
|
self.s ^= set(self.otherword)
|
|
for c in (self.word + self.otherword):
|
|
if (c in self.word) ^ (c in self.otherword):
|
|
self.assertIn(c, self.s)
|
|
else:
|
|
self.assertNotIn(c, self.s)
|
|
|
|
def test_inplace_on_self(self):
|
|
t = self.s.copy()
|
|
t |= t
|
|
self.assertEqual(t, self.s)
|
|
t &= t
|
|
self.assertEqual(t, self.s)
|
|
t -= t
|
|
self.assertEqual(t, self.thetype())
|
|
t = self.s.copy()
|
|
t ^= t
|
|
self.assertEqual(t, self.thetype())
|
|
|
|
def test_weakref(self):
|
|
s = self.thetype('gallahad')
|
|
p = weakref.proxy(s)
|
|
self.assertEqual(str(p), str(s))
|
|
s = None
|
|
self.assertRaises(ReferenceError, str, p)
|
|
|
|
def test_rich_compare(self):
|
|
class TestRichSetCompare:
|
|
def __gt__(self, some_set):
|
|
self.gt_called = True
|
|
return False
|
|
def __lt__(self, some_set):
|
|
self.lt_called = True
|
|
return False
|
|
def __ge__(self, some_set):
|
|
self.ge_called = True
|
|
return False
|
|
def __le__(self, some_set):
|
|
self.le_called = True
|
|
return False
|
|
|
|
# This first tries the builtin rich set comparison, which doesn't know
|
|
# how to handle the custom object. Upon returning NotImplemented, the
|
|
# corresponding comparison on the right object is invoked.
|
|
myset = {1, 2, 3}
|
|
|
|
myobj = TestRichSetCompare()
|
|
myset < myobj
|
|
self.assertTrue(myobj.gt_called)
|
|
|
|
myobj = TestRichSetCompare()
|
|
myset > myobj
|
|
self.assertTrue(myobj.lt_called)
|
|
|
|
myobj = TestRichSetCompare()
|
|
myset <= myobj
|
|
self.assertTrue(myobj.ge_called)
|
|
|
|
myobj = TestRichSetCompare()
|
|
myset >= myobj
|
|
self.assertTrue(myobj.le_called)
|
|
|
|
@unittest.skipUnless(hasattr(set, "test_c_api"),
|
|
'C API test only available in a debug build')
|
|
def test_c_api(self):
|
|
self.assertEqual(set().test_c_api(), True)
|
|
|
|
class SetSubclass(set):
|
|
pass
|
|
|
|
class TestSetSubclass(TestSet):
|
|
thetype = SetSubclass
|
|
basetype = set
|
|
|
|
class SetSubclassWithKeywordArgs(set):
|
|
def __init__(self, iterable=[], newarg=None):
|
|
set.__init__(self, iterable)
|
|
|
|
class TestSetSubclassWithKeywordArgs(TestSet):
|
|
|
|
def test_keywords_in_subclass(self):
|
|
'SF bug #1486663 -- this used to erroneously raise a TypeError'
|
|
SetSubclassWithKeywordArgs(newarg=1)
|
|
|
|
class TestFrozenSet(TestJointOps, unittest.TestCase):
|
|
thetype = frozenset
|
|
basetype = frozenset
|
|
|
|
def test_init(self):
|
|
s = self.thetype(self.word)
|
|
s.__init__(self.otherword)
|
|
self.assertEqual(s, set(self.word))
|
|
|
|
def test_singleton_empty_frozenset(self):
|
|
f = frozenset()
|
|
efs = [frozenset(), frozenset([]), frozenset(()), frozenset(''),
|
|
frozenset(), frozenset([]), frozenset(()), frozenset(''),
|
|
frozenset(range(0)), frozenset(frozenset()),
|
|
frozenset(f), f]
|
|
# All of the empty frozensets should have just one id()
|
|
self.assertEqual(len(set(map(id, efs))), 1)
|
|
|
|
def test_constructor_identity(self):
|
|
s = self.thetype(range(3))
|
|
t = self.thetype(s)
|
|
self.assertEqual(id(s), id(t))
|
|
|
|
def test_hash(self):
|
|
self.assertEqual(hash(self.thetype('abcdeb')),
|
|
hash(self.thetype('ebecda')))
|
|
|
|
# make sure that all permutations give the same hash value
|
|
n = 100
|
|
seq = [randrange(n) for i in range(n)]
|
|
results = set()
|
|
for i in range(200):
|
|
shuffle(seq)
|
|
results.add(hash(self.thetype(seq)))
|
|
self.assertEqual(len(results), 1)
|
|
|
|
def test_copy(self):
|
|
dup = self.s.copy()
|
|
self.assertEqual(id(self.s), id(dup))
|
|
|
|
def test_frozen_as_dictkey(self):
|
|
seq = list(range(10)) + list('abcdefg') + ['apple']
|
|
key1 = self.thetype(seq)
|
|
key2 = self.thetype(reversed(seq))
|
|
self.assertEqual(key1, key2)
|
|
self.assertNotEqual(id(key1), id(key2))
|
|
d = {}
|
|
d[key1] = 42
|
|
self.assertEqual(d[key2], 42)
|
|
|
|
def test_hash_caching(self):
|
|
f = self.thetype('abcdcda')
|
|
self.assertEqual(hash(f), hash(f))
|
|
|
|
def test_hash_effectiveness(self):
|
|
n = 13
|
|
hashvalues = set()
|
|
addhashvalue = hashvalues.add
|
|
elemmasks = [(i+1, 1<<i) for i in range(n)]
|
|
for i in range(2**n):
|
|
addhashvalue(hash(frozenset([e for e, m in elemmasks if m&i])))
|
|
self.assertEqual(len(hashvalues), 2**n)
|
|
|
|
class FrozenSetSubclass(frozenset):
|
|
pass
|
|
|
|
class TestFrozenSetSubclass(TestFrozenSet):
|
|
thetype = FrozenSetSubclass
|
|
basetype = frozenset
|
|
|
|
def test_constructor_identity(self):
|
|
s = self.thetype(range(3))
|
|
t = self.thetype(s)
|
|
self.assertNotEqual(id(s), id(t))
|
|
|
|
def test_copy(self):
|
|
dup = self.s.copy()
|
|
self.assertNotEqual(id(self.s), id(dup))
|
|
|
|
def test_nested_empty_constructor(self):
|
|
s = self.thetype()
|
|
t = self.thetype(s)
|
|
self.assertEqual(s, t)
|
|
|
|
def test_singleton_empty_frozenset(self):
|
|
Frozenset = self.thetype
|
|
f = frozenset()
|
|
F = Frozenset()
|
|
efs = [Frozenset(), Frozenset([]), Frozenset(()), Frozenset(''),
|
|
Frozenset(), Frozenset([]), Frozenset(()), Frozenset(''),
|
|
Frozenset(range(0)), Frozenset(Frozenset()),
|
|
Frozenset(frozenset()), f, F, Frozenset(f), Frozenset(F)]
|
|
# All empty frozenset subclass instances should have different ids
|
|
self.assertEqual(len(set(map(id, efs))), len(efs))
|
|
|
|
# Tests taken from test_sets.py =============================================
|
|
|
|
empty_set = set()
|
|
|
|
#==============================================================================
|
|
|
|
class TestBasicOps:
|
|
|
|
def test_repr(self):
|
|
if self.repr is not None:
|
|
self.assertEqual(repr(self.set), self.repr)
|
|
|
|
def check_repr_against_values(self):
|
|
text = repr(self.set)
|
|
self.assertTrue(text.startswith('{'))
|
|
self.assertTrue(text.endswith('}'))
|
|
|
|
result = text[1:-1].split(', ')
|
|
result.sort()
|
|
sorted_repr_values = [repr(value) for value in self.values]
|
|
sorted_repr_values.sort()
|
|
self.assertEqual(result, sorted_repr_values)
|
|
|
|
def test_print(self):
|
|
try:
|
|
fo = open(support.TESTFN, "w")
|
|
fo.write(str(self.set))
|
|
fo.close()
|
|
fo = open(support.TESTFN, "r")
|
|
self.assertEqual(fo.read(), repr(self.set))
|
|
finally:
|
|
fo.close()
|
|
support.unlink(support.TESTFN)
|
|
|
|
def test_length(self):
|
|
self.assertEqual(len(self.set), self.length)
|
|
|
|
def test_self_equality(self):
|
|
self.assertEqual(self.set, self.set)
|
|
|
|
def test_equivalent_equality(self):
|
|
self.assertEqual(self.set, self.dup)
|
|
|
|
def test_copy(self):
|
|
self.assertEqual(self.set.copy(), self.dup)
|
|
|
|
def test_self_union(self):
|
|
result = self.set | self.set
|
|
self.assertEqual(result, self.dup)
|
|
|
|
def test_empty_union(self):
|
|
result = self.set | empty_set
|
|
self.assertEqual(result, self.dup)
|
|
|
|
def test_union_empty(self):
|
|
result = empty_set | self.set
|
|
self.assertEqual(result, self.dup)
|
|
|
|
def test_self_intersection(self):
|
|
result = self.set & self.set
|
|
self.assertEqual(result, self.dup)
|
|
|
|
def test_empty_intersection(self):
|
|
result = self.set & empty_set
|
|
self.assertEqual(result, empty_set)
|
|
|
|
def test_intersection_empty(self):
|
|
result = empty_set & self.set
|
|
self.assertEqual(result, empty_set)
|
|
|
|
def test_self_isdisjoint(self):
|
|
result = self.set.isdisjoint(self.set)
|
|
self.assertEqual(result, not self.set)
|
|
|
|
def test_empty_isdisjoint(self):
|
|
result = self.set.isdisjoint(empty_set)
|
|
self.assertEqual(result, True)
|
|
|
|
def test_isdisjoint_empty(self):
|
|
result = empty_set.isdisjoint(self.set)
|
|
self.assertEqual(result, True)
|
|
|
|
def test_self_symmetric_difference(self):
|
|
result = self.set ^ self.set
|
|
self.assertEqual(result, empty_set)
|
|
|
|
def test_empty_symmetric_difference(self):
|
|
result = self.set ^ empty_set
|
|
self.assertEqual(result, self.set)
|
|
|
|
def test_self_difference(self):
|
|
result = self.set - self.set
|
|
self.assertEqual(result, empty_set)
|
|
|
|
def test_empty_difference(self):
|
|
result = self.set - empty_set
|
|
self.assertEqual(result, self.dup)
|
|
|
|
def test_empty_difference_rev(self):
|
|
result = empty_set - self.set
|
|
self.assertEqual(result, empty_set)
|
|
|
|
def test_iteration(self):
|
|
for v in self.set:
|
|
self.assertIn(v, self.values)
|
|
setiter = iter(self.set)
|
|
self.assertEqual(setiter.__length_hint__(), len(self.set))
|
|
|
|
def test_pickling(self):
|
|
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
p = pickle.dumps(self.set, proto)
|
|
copy = pickle.loads(p)
|
|
self.assertEqual(self.set, copy,
|
|
"%s != %s" % (self.set, copy))
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestBasicOpsEmpty(TestBasicOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.case = "empty set"
|
|
self.values = []
|
|
self.set = set(self.values)
|
|
self.dup = set(self.values)
|
|
self.length = 0
|
|
self.repr = "set()"
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestBasicOpsSingleton(TestBasicOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.case = "unit set (number)"
|
|
self.values = [3]
|
|
self.set = set(self.values)
|
|
self.dup = set(self.values)
|
|
self.length = 1
|
|
self.repr = "{3}"
|
|
|
|
def test_in(self):
|
|
self.assertIn(3, self.set)
|
|
|
|
def test_not_in(self):
|
|
self.assertNotIn(2, self.set)
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestBasicOpsTuple(TestBasicOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.case = "unit set (tuple)"
|
|
self.values = [(0, "zero")]
|
|
self.set = set(self.values)
|
|
self.dup = set(self.values)
|
|
self.length = 1
|
|
self.repr = "{(0, 'zero')}"
|
|
|
|
def test_in(self):
|
|
self.assertIn((0, "zero"), self.set)
|
|
|
|
def test_not_in(self):
|
|
self.assertNotIn(9, self.set)
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestBasicOpsTriple(TestBasicOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.case = "triple set"
|
|
self.values = [0, "zero", operator.add]
|
|
self.set = set(self.values)
|
|
self.dup = set(self.values)
|
|
self.length = 3
|
|
self.repr = None
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestBasicOpsString(TestBasicOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.case = "string set"
|
|
self.values = ["a", "b", "c"]
|
|
self.set = set(self.values)
|
|
self.dup = set(self.values)
|
|
self.length = 3
|
|
|
|
def test_repr(self):
|
|
self.check_repr_against_values()
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestBasicOpsBytes(TestBasicOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.case = "bytes set"
|
|
self.values = [b"a", b"b", b"c"]
|
|
self.set = set(self.values)
|
|
self.dup = set(self.values)
|
|
self.length = 3
|
|
|
|
def test_repr(self):
|
|
self.check_repr_against_values()
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestBasicOpsMixedStringBytes(TestBasicOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self._warning_filters = support.check_warnings()
|
|
self._warning_filters.__enter__()
|
|
warnings.simplefilter('ignore', BytesWarning)
|
|
self.case = "string and bytes set"
|
|
self.values = ["a", "b", b"a", b"b"]
|
|
self.set = set(self.values)
|
|
self.dup = set(self.values)
|
|
self.length = 4
|
|
|
|
def tearDown(self):
|
|
self._warning_filters.__exit__(None, None, None)
|
|
|
|
def test_repr(self):
|
|
self.check_repr_against_values()
|
|
|
|
#==============================================================================
|
|
|
|
def baditer():
|
|
raise TypeError
|
|
yield True
|
|
|
|
def gooditer():
|
|
yield True
|
|
|
|
class TestExceptionPropagation(unittest.TestCase):
|
|
"""SF 628246: Set constructor should not trap iterator TypeErrors"""
|
|
|
|
def test_instanceWithException(self):
|
|
self.assertRaises(TypeError, set, baditer())
|
|
|
|
def test_instancesWithoutException(self):
|
|
# All of these iterables should load without exception.
|
|
set([1,2,3])
|
|
set((1,2,3))
|
|
set({'one':1, 'two':2, 'three':3})
|
|
set(range(3))
|
|
set('abc')
|
|
set(gooditer())
|
|
|
|
def test_changingSizeWhileIterating(self):
|
|
s = set([1,2,3])
|
|
try:
|
|
for i in s:
|
|
s.update([4])
|
|
except RuntimeError:
|
|
pass
|
|
else:
|
|
self.fail("no exception when changing size during iteration")
|
|
|
|
#==============================================================================
|
|
|
|
class TestSetOfSets(unittest.TestCase):
|
|
def test_constructor(self):
|
|
inner = frozenset([1])
|
|
outer = set([inner])
|
|
element = outer.pop()
|
|
self.assertEqual(type(element), frozenset)
|
|
outer.add(inner) # Rebuild set of sets with .add method
|
|
outer.remove(inner)
|
|
self.assertEqual(outer, set()) # Verify that remove worked
|
|
outer.discard(inner) # Absence of KeyError indicates working fine
|
|
|
|
#==============================================================================
|
|
|
|
class TestBinaryOps(unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set((2, 4, 6))
|
|
|
|
def test_eq(self): # SF bug 643115
|
|
self.assertEqual(self.set, set({2:1,4:3,6:5}))
|
|
|
|
def test_union_subset(self):
|
|
result = self.set | set([2])
|
|
self.assertEqual(result, set((2, 4, 6)))
|
|
|
|
def test_union_superset(self):
|
|
result = self.set | set([2, 4, 6, 8])
|
|
self.assertEqual(result, set([2, 4, 6, 8]))
|
|
|
|
def test_union_overlap(self):
|
|
result = self.set | set([3, 4, 5])
|
|
self.assertEqual(result, set([2, 3, 4, 5, 6]))
|
|
|
|
def test_union_non_overlap(self):
|
|
result = self.set | set([8])
|
|
self.assertEqual(result, set([2, 4, 6, 8]))
|
|
|
|
def test_intersection_subset(self):
|
|
result = self.set & set((2, 4))
|
|
self.assertEqual(result, set((2, 4)))
|
|
|
|
def test_intersection_superset(self):
|
|
result = self.set & set([2, 4, 6, 8])
|
|
self.assertEqual(result, set([2, 4, 6]))
|
|
|
|
def test_intersection_overlap(self):
|
|
result = self.set & set([3, 4, 5])
|
|
self.assertEqual(result, set([4]))
|
|
|
|
def test_intersection_non_overlap(self):
|
|
result = self.set & set([8])
|
|
self.assertEqual(result, empty_set)
|
|
|
|
def test_isdisjoint_subset(self):
|
|
result = self.set.isdisjoint(set((2, 4)))
|
|
self.assertEqual(result, False)
|
|
|
|
def test_isdisjoint_superset(self):
|
|
result = self.set.isdisjoint(set([2, 4, 6, 8]))
|
|
self.assertEqual(result, False)
|
|
|
|
def test_isdisjoint_overlap(self):
|
|
result = self.set.isdisjoint(set([3, 4, 5]))
|
|
self.assertEqual(result, False)
|
|
|
|
def test_isdisjoint_non_overlap(self):
|
|
result = self.set.isdisjoint(set([8]))
|
|
self.assertEqual(result, True)
|
|
|
|
def test_sym_difference_subset(self):
|
|
result = self.set ^ set((2, 4))
|
|
self.assertEqual(result, set([6]))
|
|
|
|
def test_sym_difference_superset(self):
|
|
result = self.set ^ set((2, 4, 6, 8))
|
|
self.assertEqual(result, set([8]))
|
|
|
|
def test_sym_difference_overlap(self):
|
|
result = self.set ^ set((3, 4, 5))
|
|
self.assertEqual(result, set([2, 3, 5, 6]))
|
|
|
|
def test_sym_difference_non_overlap(self):
|
|
result = self.set ^ set([8])
|
|
self.assertEqual(result, set([2, 4, 6, 8]))
|
|
|
|
#==============================================================================
|
|
|
|
class TestUpdateOps(unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set((2, 4, 6))
|
|
|
|
def test_union_subset(self):
|
|
self.set |= set([2])
|
|
self.assertEqual(self.set, set((2, 4, 6)))
|
|
|
|
def test_union_superset(self):
|
|
self.set |= set([2, 4, 6, 8])
|
|
self.assertEqual(self.set, set([2, 4, 6, 8]))
|
|
|
|
def test_union_overlap(self):
|
|
self.set |= set([3, 4, 5])
|
|
self.assertEqual(self.set, set([2, 3, 4, 5, 6]))
|
|
|
|
def test_union_non_overlap(self):
|
|
self.set |= set([8])
|
|
self.assertEqual(self.set, set([2, 4, 6, 8]))
|
|
|
|
def test_union_method_call(self):
|
|
self.set.update(set([3, 4, 5]))
|
|
self.assertEqual(self.set, set([2, 3, 4, 5, 6]))
|
|
|
|
def test_intersection_subset(self):
|
|
self.set &= set((2, 4))
|
|
self.assertEqual(self.set, set((2, 4)))
|
|
|
|
def test_intersection_superset(self):
|
|
self.set &= set([2, 4, 6, 8])
|
|
self.assertEqual(self.set, set([2, 4, 6]))
|
|
|
|
def test_intersection_overlap(self):
|
|
self.set &= set([3, 4, 5])
|
|
self.assertEqual(self.set, set([4]))
|
|
|
|
def test_intersection_non_overlap(self):
|
|
self.set &= set([8])
|
|
self.assertEqual(self.set, empty_set)
|
|
|
|
def test_intersection_method_call(self):
|
|
self.set.intersection_update(set([3, 4, 5]))
|
|
self.assertEqual(self.set, set([4]))
|
|
|
|
def test_sym_difference_subset(self):
|
|
self.set ^= set((2, 4))
|
|
self.assertEqual(self.set, set([6]))
|
|
|
|
def test_sym_difference_superset(self):
|
|
self.set ^= set((2, 4, 6, 8))
|
|
self.assertEqual(self.set, set([8]))
|
|
|
|
def test_sym_difference_overlap(self):
|
|
self.set ^= set((3, 4, 5))
|
|
self.assertEqual(self.set, set([2, 3, 5, 6]))
|
|
|
|
def test_sym_difference_non_overlap(self):
|
|
self.set ^= set([8])
|
|
self.assertEqual(self.set, set([2, 4, 6, 8]))
|
|
|
|
def test_sym_difference_method_call(self):
|
|
self.set.symmetric_difference_update(set([3, 4, 5]))
|
|
self.assertEqual(self.set, set([2, 3, 5, 6]))
|
|
|
|
def test_difference_subset(self):
|
|
self.set -= set((2, 4))
|
|
self.assertEqual(self.set, set([6]))
|
|
|
|
def test_difference_superset(self):
|
|
self.set -= set((2, 4, 6, 8))
|
|
self.assertEqual(self.set, set([]))
|
|
|
|
def test_difference_overlap(self):
|
|
self.set -= set((3, 4, 5))
|
|
self.assertEqual(self.set, set([2, 6]))
|
|
|
|
def test_difference_non_overlap(self):
|
|
self.set -= set([8])
|
|
self.assertEqual(self.set, set([2, 4, 6]))
|
|
|
|
def test_difference_method_call(self):
|
|
self.set.difference_update(set([3, 4, 5]))
|
|
self.assertEqual(self.set, set([2, 6]))
|
|
|
|
#==============================================================================
|
|
|
|
class TestMutate(unittest.TestCase):
|
|
def setUp(self):
|
|
self.values = ["a", "b", "c"]
|
|
self.set = set(self.values)
|
|
|
|
def test_add_present(self):
|
|
self.set.add("c")
|
|
self.assertEqual(self.set, set("abc"))
|
|
|
|
def test_add_absent(self):
|
|
self.set.add("d")
|
|
self.assertEqual(self.set, set("abcd"))
|
|
|
|
def test_add_until_full(self):
|
|
tmp = set()
|
|
expected_len = 0
|
|
for v in self.values:
|
|
tmp.add(v)
|
|
expected_len += 1
|
|
self.assertEqual(len(tmp), expected_len)
|
|
self.assertEqual(tmp, self.set)
|
|
|
|
def test_remove_present(self):
|
|
self.set.remove("b")
|
|
self.assertEqual(self.set, set("ac"))
|
|
|
|
def test_remove_absent(self):
|
|
try:
|
|
self.set.remove("d")
|
|
self.fail("Removing missing element should have raised LookupError")
|
|
except LookupError:
|
|
pass
|
|
|
|
def test_remove_until_empty(self):
|
|
expected_len = len(self.set)
|
|
for v in self.values:
|
|
self.set.remove(v)
|
|
expected_len -= 1
|
|
self.assertEqual(len(self.set), expected_len)
|
|
|
|
def test_discard_present(self):
|
|
self.set.discard("c")
|
|
self.assertEqual(self.set, set("ab"))
|
|
|
|
def test_discard_absent(self):
|
|
self.set.discard("d")
|
|
self.assertEqual(self.set, set("abc"))
|
|
|
|
def test_clear(self):
|
|
self.set.clear()
|
|
self.assertEqual(len(self.set), 0)
|
|
|
|
def test_pop(self):
|
|
popped = {}
|
|
while self.set:
|
|
popped[self.set.pop()] = None
|
|
self.assertEqual(len(popped), len(self.values))
|
|
for v in self.values:
|
|
self.assertIn(v, popped)
|
|
|
|
def test_update_empty_tuple(self):
|
|
self.set.update(())
|
|
self.assertEqual(self.set, set(self.values))
|
|
|
|
def test_update_unit_tuple_overlap(self):
|
|
self.set.update(("a",))
|
|
self.assertEqual(self.set, set(self.values))
|
|
|
|
def test_update_unit_tuple_non_overlap(self):
|
|
self.set.update(("a", "z"))
|
|
self.assertEqual(self.set, set(self.values + ["z"]))
|
|
|
|
#==============================================================================
|
|
|
|
class TestSubsets:
|
|
|
|
case2method = {"<=": "issubset",
|
|
">=": "issuperset",
|
|
}
|
|
|
|
reverse = {"==": "==",
|
|
"!=": "!=",
|
|
"<": ">",
|
|
">": "<",
|
|
"<=": ">=",
|
|
">=": "<=",
|
|
}
|
|
|
|
def test_issubset(self):
|
|
x = self.left
|
|
y = self.right
|
|
for case in "!=", "==", "<", "<=", ">", ">=":
|
|
expected = case in self.cases
|
|
# Test the binary infix spelling.
|
|
result = eval("x" + case + "y", locals())
|
|
self.assertEqual(result, expected)
|
|
# Test the "friendly" method-name spelling, if one exists.
|
|
if case in TestSubsets.case2method:
|
|
method = getattr(x, TestSubsets.case2method[case])
|
|
result = method(y)
|
|
self.assertEqual(result, expected)
|
|
|
|
# Now do the same for the operands reversed.
|
|
rcase = TestSubsets.reverse[case]
|
|
result = eval("y" + rcase + "x", locals())
|
|
self.assertEqual(result, expected)
|
|
if rcase in TestSubsets.case2method:
|
|
method = getattr(y, TestSubsets.case2method[rcase])
|
|
result = method(x)
|
|
self.assertEqual(result, expected)
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestSubsetEqualEmpty(TestSubsets, unittest.TestCase):
|
|
left = set()
|
|
right = set()
|
|
name = "both empty"
|
|
cases = "==", "<=", ">="
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestSubsetEqualNonEmpty(TestSubsets, unittest.TestCase):
|
|
left = set([1, 2])
|
|
right = set([1, 2])
|
|
name = "equal pair"
|
|
cases = "==", "<=", ">="
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestSubsetEmptyNonEmpty(TestSubsets, unittest.TestCase):
|
|
left = set()
|
|
right = set([1, 2])
|
|
name = "one empty, one non-empty"
|
|
cases = "!=", "<", "<="
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestSubsetPartial(TestSubsets, unittest.TestCase):
|
|
left = set([1])
|
|
right = set([1, 2])
|
|
name = "one a non-empty proper subset of other"
|
|
cases = "!=", "<", "<="
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestSubsetNonOverlap(TestSubsets, unittest.TestCase):
|
|
left = set([1])
|
|
right = set([2])
|
|
name = "neither empty, neither contains"
|
|
cases = "!="
|
|
|
|
#==============================================================================
|
|
|
|
class TestOnlySetsInBinaryOps:
|
|
|
|
def test_eq_ne(self):
|
|
# Unlike the others, this is testing that == and != *are* allowed.
|
|
self.assertEqual(self.other == self.set, False)
|
|
self.assertEqual(self.set == self.other, False)
|
|
self.assertEqual(self.other != self.set, True)
|
|
self.assertEqual(self.set != self.other, True)
|
|
|
|
def test_ge_gt_le_lt(self):
|
|
self.assertRaises(TypeError, lambda: self.set < self.other)
|
|
self.assertRaises(TypeError, lambda: self.set <= self.other)
|
|
self.assertRaises(TypeError, lambda: self.set > self.other)
|
|
self.assertRaises(TypeError, lambda: self.set >= self.other)
|
|
|
|
self.assertRaises(TypeError, lambda: self.other < self.set)
|
|
self.assertRaises(TypeError, lambda: self.other <= self.set)
|
|
self.assertRaises(TypeError, lambda: self.other > self.set)
|
|
self.assertRaises(TypeError, lambda: self.other >= self.set)
|
|
|
|
def test_update_operator(self):
|
|
try:
|
|
self.set |= self.other
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
self.fail("expected TypeError")
|
|
|
|
def test_update(self):
|
|
if self.otherIsIterable:
|
|
self.set.update(self.other)
|
|
else:
|
|
self.assertRaises(TypeError, self.set.update, self.other)
|
|
|
|
def test_union(self):
|
|
self.assertRaises(TypeError, lambda: self.set | self.other)
|
|
self.assertRaises(TypeError, lambda: self.other | self.set)
|
|
if self.otherIsIterable:
|
|
self.set.union(self.other)
|
|
else:
|
|
self.assertRaises(TypeError, self.set.union, self.other)
|
|
|
|
def test_intersection_update_operator(self):
|
|
try:
|
|
self.set &= self.other
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
self.fail("expected TypeError")
|
|
|
|
def test_intersection_update(self):
|
|
if self.otherIsIterable:
|
|
self.set.intersection_update(self.other)
|
|
else:
|
|
self.assertRaises(TypeError,
|
|
self.set.intersection_update,
|
|
self.other)
|
|
|
|
def test_intersection(self):
|
|
self.assertRaises(TypeError, lambda: self.set & self.other)
|
|
self.assertRaises(TypeError, lambda: self.other & self.set)
|
|
if self.otherIsIterable:
|
|
self.set.intersection(self.other)
|
|
else:
|
|
self.assertRaises(TypeError, self.set.intersection, self.other)
|
|
|
|
def test_sym_difference_update_operator(self):
|
|
try:
|
|
self.set ^= self.other
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
self.fail("expected TypeError")
|
|
|
|
def test_sym_difference_update(self):
|
|
if self.otherIsIterable:
|
|
self.set.symmetric_difference_update(self.other)
|
|
else:
|
|
self.assertRaises(TypeError,
|
|
self.set.symmetric_difference_update,
|
|
self.other)
|
|
|
|
def test_sym_difference(self):
|
|
self.assertRaises(TypeError, lambda: self.set ^ self.other)
|
|
self.assertRaises(TypeError, lambda: self.other ^ self.set)
|
|
if self.otherIsIterable:
|
|
self.set.symmetric_difference(self.other)
|
|
else:
|
|
self.assertRaises(TypeError, self.set.symmetric_difference, self.other)
|
|
|
|
def test_difference_update_operator(self):
|
|
try:
|
|
self.set -= self.other
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
self.fail("expected TypeError")
|
|
|
|
def test_difference_update(self):
|
|
if self.otherIsIterable:
|
|
self.set.difference_update(self.other)
|
|
else:
|
|
self.assertRaises(TypeError,
|
|
self.set.difference_update,
|
|
self.other)
|
|
|
|
def test_difference(self):
|
|
self.assertRaises(TypeError, lambda: self.set - self.other)
|
|
self.assertRaises(TypeError, lambda: self.other - self.set)
|
|
if self.otherIsIterable:
|
|
self.set.difference(self.other)
|
|
else:
|
|
self.assertRaises(TypeError, self.set.difference, self.other)
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestOnlySetsNumeric(TestOnlySetsInBinaryOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set((1, 2, 3))
|
|
self.other = 19
|
|
self.otherIsIterable = False
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestOnlySetsDict(TestOnlySetsInBinaryOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set((1, 2, 3))
|
|
self.other = {1:2, 3:4}
|
|
self.otherIsIterable = True
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestOnlySetsOperator(TestOnlySetsInBinaryOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set((1, 2, 3))
|
|
self.other = operator.add
|
|
self.otherIsIterable = False
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestOnlySetsTuple(TestOnlySetsInBinaryOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set((1, 2, 3))
|
|
self.other = (2, 4, 6)
|
|
self.otherIsIterable = True
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestOnlySetsString(TestOnlySetsInBinaryOps, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set((1, 2, 3))
|
|
self.other = 'abc'
|
|
self.otherIsIterable = True
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestOnlySetsGenerator(TestOnlySetsInBinaryOps, unittest.TestCase):
|
|
def setUp(self):
|
|
def gen():
|
|
for i in range(0, 10, 2):
|
|
yield i
|
|
self.set = set((1, 2, 3))
|
|
self.other = gen()
|
|
self.otherIsIterable = True
|
|
|
|
#==============================================================================
|
|
|
|
class TestCopying:
|
|
|
|
def test_copy(self):
|
|
dup = self.set.copy()
|
|
dup_list = sorted(dup, key=repr)
|
|
set_list = sorted(self.set, key=repr)
|
|
self.assertEqual(len(dup_list), len(set_list))
|
|
for i in range(len(dup_list)):
|
|
self.assertTrue(dup_list[i] is set_list[i])
|
|
|
|
def test_deep_copy(self):
|
|
dup = copy.deepcopy(self.set)
|
|
##print type(dup), repr(dup)
|
|
dup_list = sorted(dup, key=repr)
|
|
set_list = sorted(self.set, key=repr)
|
|
self.assertEqual(len(dup_list), len(set_list))
|
|
for i in range(len(dup_list)):
|
|
self.assertEqual(dup_list[i], set_list[i])
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestCopyingEmpty(TestCopying, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set()
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestCopyingSingleton(TestCopying, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set(["hello"])
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestCopyingTriple(TestCopying, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set(["zero", 0, None])
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestCopyingTuple(TestCopying, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set([(1, 2)])
|
|
|
|
#------------------------------------------------------------------------------
|
|
|
|
class TestCopyingNested(TestCopying, unittest.TestCase):
|
|
def setUp(self):
|
|
self.set = set([((1, 2), (3, 4))])
|
|
|
|
#==============================================================================
|
|
|
|
class TestIdentities(unittest.TestCase):
|
|
def setUp(self):
|
|
self.a = set('abracadabra')
|
|
self.b = set('alacazam')
|
|
|
|
def test_binopsVsSubsets(self):
|
|
a, b = self.a, self.b
|
|
self.assertTrue(a - b < a)
|
|
self.assertTrue(b - a < b)
|
|
self.assertTrue(a & b < a)
|
|
self.assertTrue(a & b < b)
|
|
self.assertTrue(a | b > a)
|
|
self.assertTrue(a | b > b)
|
|
self.assertTrue(a ^ b < a | b)
|
|
|
|
def test_commutativity(self):
|
|
a, b = self.a, self.b
|
|
self.assertEqual(a&b, b&a)
|
|
self.assertEqual(a|b, b|a)
|
|
self.assertEqual(a^b, b^a)
|
|
if a != b:
|
|
self.assertNotEqual(a-b, b-a)
|
|
|
|
def test_summations(self):
|
|
# check that sums of parts equal the whole
|
|
a, b = self.a, self.b
|
|
self.assertEqual((a-b)|(a&b)|(b-a), a|b)
|
|
self.assertEqual((a&b)|(a^b), a|b)
|
|
self.assertEqual(a|(b-a), a|b)
|
|
self.assertEqual((a-b)|b, a|b)
|
|
self.assertEqual((a-b)|(a&b), a)
|
|
self.assertEqual((b-a)|(a&b), b)
|
|
self.assertEqual((a-b)|(b-a), a^b)
|
|
|
|
def test_exclusion(self):
|
|
# check that inverse operations show non-overlap
|
|
a, b, zero = self.a, self.b, set()
|
|
self.assertEqual((a-b)&b, zero)
|
|
self.assertEqual((b-a)&a, zero)
|
|
self.assertEqual((a&b)&(a^b), zero)
|
|
|
|
# Tests derived from test_itertools.py =======================================
|
|
|
|
def R(seqn):
|
|
'Regular generator'
|
|
for i in seqn:
|
|
yield i
|
|
|
|
class G:
|
|
'Sequence using __getitem__'
|
|
def __init__(self, seqn):
|
|
self.seqn = seqn
|
|
def __getitem__(self, i):
|
|
return self.seqn[i]
|
|
|
|
class I:
|
|
'Sequence using iterator protocol'
|
|
def __init__(self, seqn):
|
|
self.seqn = seqn
|
|
self.i = 0
|
|
def __iter__(self):
|
|
return self
|
|
def __next__(self):
|
|
if self.i >= len(self.seqn): raise StopIteration
|
|
v = self.seqn[self.i]
|
|
self.i += 1
|
|
return v
|
|
|
|
class Ig:
|
|
'Sequence using iterator protocol defined with a generator'
|
|
def __init__(self, seqn):
|
|
self.seqn = seqn
|
|
self.i = 0
|
|
def __iter__(self):
|
|
for val in self.seqn:
|
|
yield val
|
|
|
|
class X:
|
|
'Missing __getitem__ and __iter__'
|
|
def __init__(self, seqn):
|
|
self.seqn = seqn
|
|
self.i = 0
|
|
def __next__(self):
|
|
if self.i >= len(self.seqn): raise StopIteration
|
|
v = self.seqn[self.i]
|
|
self.i += 1
|
|
return v
|
|
|
|
class N:
|
|
'Iterator missing __next__()'
|
|
def __init__(self, seqn):
|
|
self.seqn = seqn
|
|
self.i = 0
|
|
def __iter__(self):
|
|
return self
|
|
|
|
class E:
|
|
'Test propagation of exceptions'
|
|
def __init__(self, seqn):
|
|
self.seqn = seqn
|
|
self.i = 0
|
|
def __iter__(self):
|
|
return self
|
|
def __next__(self):
|
|
3 // 0
|
|
|
|
class S:
|
|
'Test immediate stop'
|
|
def __init__(self, seqn):
|
|
pass
|
|
def __iter__(self):
|
|
return self
|
|
def __next__(self):
|
|
raise StopIteration
|
|
|
|
from itertools import chain
|
|
def L(seqn):
|
|
'Test multiple tiers of iterators'
|
|
return chain(map(lambda x:x, R(Ig(G(seqn)))))
|
|
|
|
class TestVariousIteratorArgs(unittest.TestCase):
|
|
|
|
def test_constructor(self):
|
|
for cons in (set, frozenset):
|
|
for s in ("123", "", range(1000), ('do', 1.2), range(2000,2200,5)):
|
|
for g in (G, I, Ig, S, L, R):
|
|
self.assertEqual(sorted(cons(g(s)), key=repr), sorted(g(s), key=repr))
|
|
self.assertRaises(TypeError, cons , X(s))
|
|
self.assertRaises(TypeError, cons , N(s))
|
|
self.assertRaises(ZeroDivisionError, cons , E(s))
|
|
|
|
def test_inline_methods(self):
|
|
s = set('november')
|
|
for data in ("123", "", range(1000), ('do', 1.2), range(2000,2200,5), 'december'):
|
|
for meth in (s.union, s.intersection, s.difference, s.symmetric_difference, s.isdisjoint):
|
|
for g in (G, I, Ig, L, R):
|
|
expected = meth(data)
|
|
actual = meth(g(data))
|
|
if isinstance(expected, bool):
|
|
self.assertEqual(actual, expected)
|
|
else:
|
|
self.assertEqual(sorted(actual, key=repr), sorted(expected, key=repr))
|
|
self.assertRaises(TypeError, meth, X(s))
|
|
self.assertRaises(TypeError, meth, N(s))
|
|
self.assertRaises(ZeroDivisionError, meth, E(s))
|
|
|
|
def test_inplace_methods(self):
|
|
for data in ("123", "", range(1000), ('do', 1.2), range(2000,2200,5), 'december'):
|
|
for methname in ('update', 'intersection_update',
|
|
'difference_update', 'symmetric_difference_update'):
|
|
for g in (G, I, Ig, S, L, R):
|
|
s = set('january')
|
|
t = s.copy()
|
|
getattr(s, methname)(list(g(data)))
|
|
getattr(t, methname)(g(data))
|
|
self.assertEqual(sorted(s, key=repr), sorted(t, key=repr))
|
|
|
|
self.assertRaises(TypeError, getattr(set('january'), methname), X(data))
|
|
self.assertRaises(TypeError, getattr(set('january'), methname), N(data))
|
|
self.assertRaises(ZeroDivisionError, getattr(set('january'), methname), E(data))
|
|
|
|
class bad_eq:
|
|
def __eq__(self, other):
|
|
if be_bad:
|
|
set2.clear()
|
|
raise ZeroDivisionError
|
|
return self is other
|
|
def __hash__(self):
|
|
return 0
|
|
|
|
class bad_dict_clear:
|
|
def __eq__(self, other):
|
|
if be_bad:
|
|
dict2.clear()
|
|
return self is other
|
|
def __hash__(self):
|
|
return 0
|
|
|
|
class TestWeirdBugs(unittest.TestCase):
|
|
def test_8420_set_merge(self):
|
|
# This used to segfault
|
|
global be_bad, set2, dict2
|
|
be_bad = False
|
|
set1 = {bad_eq()}
|
|
set2 = {bad_eq() for i in range(75)}
|
|
be_bad = True
|
|
self.assertRaises(ZeroDivisionError, set1.update, set2)
|
|
|
|
be_bad = False
|
|
set1 = {bad_dict_clear()}
|
|
dict2 = {bad_dict_clear(): None}
|
|
be_bad = True
|
|
set1.symmetric_difference_update(dict2)
|
|
|
|
def test_iter_and_mutate(self):
|
|
# Issue #24581
|
|
s = set(range(100))
|
|
s.clear()
|
|
s.update(range(100))
|
|
si = iter(s)
|
|
s.clear()
|
|
a = list(range(100))
|
|
s.update(range(100))
|
|
list(si)
|
|
|
|
def test_merge_and_mutate(self):
|
|
class X:
|
|
def __hash__(self):
|
|
return hash(0)
|
|
def __eq__(self, o):
|
|
other.clear()
|
|
return False
|
|
|
|
other = set()
|
|
other = {X() for i in range(10)}
|
|
s = {0}
|
|
s.update(other)
|
|
|
|
# Application tests (based on David Eppstein's graph recipes ====================================
|
|
|
|
def powerset(U):
|
|
"""Generates all subsets of a set or sequence U."""
|
|
U = iter(U)
|
|
try:
|
|
x = frozenset([next(U)])
|
|
for S in powerset(U):
|
|
yield S
|
|
yield S | x
|
|
except StopIteration:
|
|
yield frozenset()
|
|
|
|
def cube(n):
|
|
"""Graph of n-dimensional hypercube."""
|
|
singletons = [frozenset([x]) for x in range(n)]
|
|
return dict([(x, frozenset([x^s for s in singletons]))
|
|
for x in powerset(range(n))])
|
|
|
|
def linegraph(G):
|
|
"""Graph, the vertices of which are edges of G,
|
|
with two vertices being adjacent iff the corresponding
|
|
edges share a vertex."""
|
|
L = {}
|
|
for x in G:
|
|
for y in G[x]:
|
|
nx = [frozenset([x,z]) for z in G[x] if z != y]
|
|
ny = [frozenset([y,z]) for z in G[y] if z != x]
|
|
L[frozenset([x,y])] = frozenset(nx+ny)
|
|
return L
|
|
|
|
def faces(G):
|
|
'Return a set of faces in G. Where a face is a set of vertices on that face'
|
|
# currently limited to triangles,squares, and pentagons
|
|
f = set()
|
|
for v1, edges in G.items():
|
|
for v2 in edges:
|
|
for v3 in G[v2]:
|
|
if v1 == v3:
|
|
continue
|
|
if v1 in G[v3]:
|
|
f.add(frozenset([v1, v2, v3]))
|
|
else:
|
|
for v4 in G[v3]:
|
|
if v4 == v2:
|
|
continue
|
|
if v1 in G[v4]:
|
|
f.add(frozenset([v1, v2, v3, v4]))
|
|
else:
|
|
for v5 in G[v4]:
|
|
if v5 == v3 or v5 == v2:
|
|
continue
|
|
if v1 in G[v5]:
|
|
f.add(frozenset([v1, v2, v3, v4, v5]))
|
|
return f
|
|
|
|
|
|
class TestGraphs(unittest.TestCase):
|
|
|
|
def test_cube(self):
|
|
|
|
g = cube(3) # vert --> {v1, v2, v3}
|
|
vertices1 = set(g)
|
|
self.assertEqual(len(vertices1), 8) # eight vertices
|
|
for edge in g.values():
|
|
self.assertEqual(len(edge), 3) # each vertex connects to three edges
|
|
vertices2 = set(v for edges in g.values() for v in edges)
|
|
self.assertEqual(vertices1, vertices2) # edge vertices in original set
|
|
|
|
cubefaces = faces(g)
|
|
self.assertEqual(len(cubefaces), 6) # six faces
|
|
for face in cubefaces:
|
|
self.assertEqual(len(face), 4) # each face is a square
|
|
|
|
def test_cuboctahedron(self):
|
|
|
|
# http://en.wikipedia.org/wiki/Cuboctahedron
|
|
# 8 triangular faces and 6 square faces
|
|
# 12 indentical vertices each connecting a triangle and square
|
|
|
|
g = cube(3)
|
|
cuboctahedron = linegraph(g) # V( --> {V1, V2, V3, V4}
|
|
self.assertEqual(len(cuboctahedron), 12)# twelve vertices
|
|
|
|
vertices = set(cuboctahedron)
|
|
for edges in cuboctahedron.values():
|
|
self.assertEqual(len(edges), 4) # each vertex connects to four other vertices
|
|
othervertices = set(edge for edges in cuboctahedron.values() for edge in edges)
|
|
self.assertEqual(vertices, othervertices) # edge vertices in original set
|
|
|
|
cubofaces = faces(cuboctahedron)
|
|
facesizes = collections.defaultdict(int)
|
|
for face in cubofaces:
|
|
facesizes[len(face)] += 1
|
|
self.assertEqual(facesizes[3], 8) # eight triangular faces
|
|
self.assertEqual(facesizes[4], 6) # six square faces
|
|
|
|
for vertex in cuboctahedron:
|
|
edge = vertex # Cuboctahedron vertices are edges in Cube
|
|
self.assertEqual(len(edge), 2) # Two cube vertices define an edge
|
|
for cubevert in edge:
|
|
self.assertIn(cubevert, g)
|
|
|
|
|
|
#==============================================================================
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|