Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_weakset.py @ 78069:a8aa77458e12 3.2

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Add c_size_t and c_ssize_t to the ctypes summary table.
author Antoine Pitrou <solipsis@pitrou.net>
date Thu, 12 Jul 2012 20:31:50 +0200
parents 5b88475aae96
children f911a89d2f1d
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1 import unittest
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2 from test import support
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3 from weakref import proxy, ref, WeakSet
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4 import operator
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5 import copy
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6 import string
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7 import os
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8 from random import randrange, shuffle
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9 import sys
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10 import warnings
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11 import collections
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12 from collections import UserString as ustr
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13 import gc
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14 import contextlib
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15
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16
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17 class Foo:
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18 pass
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19
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20 class RefCycle:
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21 def __init__(self):
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22 self.cycle = self
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23
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24
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25 class TestWeakSet(unittest.TestCase):
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26
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27 def setUp(self):
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28 # need to keep references to them
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29 self.items = [ustr(c) for c in ('a', 'b', 'c')]
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30 self.items2 = [ustr(c) for c in ('x', 'y', 'z')]
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31 self.ab_items = [ustr(c) for c in 'ab']
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32 self.abcde_items = [ustr(c) for c in 'abcde']
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33 self.def_items = [ustr(c) for c in 'def']
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34 self.ab_weakset = WeakSet(self.ab_items)
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35 self.abcde_weakset = WeakSet(self.abcde_items)
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36 self.def_weakset = WeakSet(self.def_items)
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37 self.letters = [ustr(c) for c in string.ascii_letters]
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38 self.s = WeakSet(self.items)
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39 self.d = dict.fromkeys(self.items)
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40 self.obj = ustr('F')
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41 self.fs = WeakSet([self.obj])
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42
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43 def test_methods(self):
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44 weaksetmethods = dir(WeakSet)
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45 for method in dir(set):
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46 if method == 'test_c_api' or method.startswith('_'):
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47 continue
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48 self.assertIn(method, weaksetmethods,
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49 "WeakSet missing method " + method)
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50
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51 def test_new_or_init(self):
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52 self.assertRaises(TypeError, WeakSet, [], 2)
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53
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54 def test_len(self):
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55 self.assertEqual(len(self.s), len(self.d))
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56 self.assertEqual(len(self.fs), 1)
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57 del self.obj
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58 self.assertEqual(len(self.fs), 0)
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59
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60 def test_contains(self):
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61 for c in self.letters:
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62 self.assertEqual(c in self.s, c in self.d)
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63 # 1 is not weakref'able, but that TypeError is caught by __contains__
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64 self.assertNotIn(1, self.s)
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65 self.assertIn(self.obj, self.fs)
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66 del self.obj
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67 self.assertNotIn(ustr('F'), self.fs)
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68
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69 def test_union(self):
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70 u = self.s.union(self.items2)
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71 for c in self.letters:
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72 self.assertEqual(c in u, c in self.d or c in self.items2)
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73 self.assertEqual(self.s, WeakSet(self.items))
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74 self.assertEqual(type(u), WeakSet)
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75 self.assertRaises(TypeError, self.s.union, [[]])
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76 for C in set, frozenset, dict.fromkeys, list, tuple:
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77 x = WeakSet(self.items + self.items2)
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78 c = C(self.items2)
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79 self.assertEqual(self.s.union(c), x)
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80 del c
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81 self.assertEqual(len(u), len(self.items) + len(self.items2))
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82 self.items2.pop()
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83 gc.collect()
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84 self.assertEqual(len(u), len(self.items) + len(self.items2))
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85
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86 def test_or(self):
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87 i = self.s.union(self.items2)
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88 self.assertEqual(self.s | set(self.items2), i)
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89 self.assertEqual(self.s | frozenset(self.items2), i)
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90
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91 def test_intersection(self):
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92 s = WeakSet(self.letters)
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93 i = s.intersection(self.items2)
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94 for c in self.letters:
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95 self.assertEqual(c in i, c in self.items2 and c in self.letters)
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96 self.assertEqual(s, WeakSet(self.letters))
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97 self.assertEqual(type(i), WeakSet)
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98 for C in set, frozenset, dict.fromkeys, list, tuple:
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99 x = WeakSet([])
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100 self.assertEqual(i.intersection(C(self.items)), x)
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101 self.assertEqual(len(i), len(self.items2))
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102 self.items2.pop()
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103 gc.collect()
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104 self.assertEqual(len(i), len(self.items2))
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105
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106 def test_isdisjoint(self):
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107 self.assertTrue(self.s.isdisjoint(WeakSet(self.items2)))
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108 self.assertTrue(not self.s.isdisjoint(WeakSet(self.letters)))
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109
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110 def test_and(self):
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111 i = self.s.intersection(self.items2)
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112 self.assertEqual(self.s & set(self.items2), i)
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113 self.assertEqual(self.s & frozenset(self.items2), i)
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114
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115 def test_difference(self):
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116 i = self.s.difference(self.items2)
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117 for c in self.letters:
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118 self.assertEqual(c in i, c in self.d and c not in self.items2)
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119 self.assertEqual(self.s, WeakSet(self.items))
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120 self.assertEqual(type(i), WeakSet)
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121 self.assertRaises(TypeError, self.s.difference, [[]])
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122
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123 def test_sub(self):
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124 i = self.s.difference(self.items2)
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125 self.assertEqual(self.s - set(self.items2), i)
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126 self.assertEqual(self.s - frozenset(self.items2), i)
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127
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128 def test_symmetric_difference(self):
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129 i = self.s.symmetric_difference(self.items2)
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130 for c in self.letters:
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131 self.assertEqual(c in i, (c in self.d) ^ (c in self.items2))
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132 self.assertEqual(self.s, WeakSet(self.items))
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133 self.assertEqual(type(i), WeakSet)
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134 self.assertRaises(TypeError, self.s.symmetric_difference, [[]])
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135 self.assertEqual(len(i), len(self.items) + len(self.items2))
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136 self.items2.pop()
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137 gc.collect()
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138 self.assertEqual(len(i), len(self.items) + len(self.items2))
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139
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140 def test_xor(self):
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141 i = self.s.symmetric_difference(self.items2)
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142 self.assertEqual(self.s ^ set(self.items2), i)
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143 self.assertEqual(self.s ^ frozenset(self.items2), i)
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144
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145 def test_sub_and_super(self):
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146 self.assertTrue(self.ab_weakset <= self.abcde_weakset)
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147 self.assertTrue(self.abcde_weakset <= self.abcde_weakset)
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148 self.assertTrue(self.abcde_weakset >= self.ab_weakset)
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149 self.assertFalse(self.abcde_weakset <= self.def_weakset)
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150 self.assertFalse(self.abcde_weakset >= self.def_weakset)
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151 self.assertTrue(set('a').issubset('abc'))
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152 self.assertTrue(set('abc').issuperset('a'))
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153 self.assertFalse(set('a').issubset('cbs'))
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154 self.assertFalse(set('cbs').issuperset('a'))
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155
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156 def test_lt(self):
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157 self.assertTrue(self.ab_weakset < self.abcde_weakset)
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158 self.assertFalse(self.abcde_weakset < self.def_weakset)
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159 self.assertFalse(self.ab_weakset < self.ab_weakset)
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160 self.assertFalse(WeakSet() < WeakSet())
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161
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162 def test_gt(self):
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163 self.assertTrue(self.abcde_weakset > self.ab_weakset)
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164 self.assertFalse(self.abcde_weakset > self.def_weakset)
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165 self.assertFalse(self.ab_weakset > self.ab_weakset)
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166 self.assertFalse(WeakSet() > WeakSet())
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167
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168 def test_gc(self):
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169 # Create a nest of cycles to exercise overall ref count check
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170 s = WeakSet(Foo() for i in range(1000))
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171 for elem in s:
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172 elem.cycle = s
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173 elem.sub = elem
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174 elem.set = WeakSet([elem])
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175
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176 def test_subclass_with_custom_hash(self):
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177 # Bug #1257731
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178 class H(WeakSet):
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179 def __hash__(self):
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180 return int(id(self) & 0x7fffffff)
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181 s=H()
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182 f=set()
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183 f.add(s)
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184 self.assertIn(s, f)
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185 f.remove(s)
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186 f.add(s)
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187 f.discard(s)
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188
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189 def test_init(self):
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190 s = WeakSet()
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191 s.__init__(self.items)
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192 self.assertEqual(s, self.s)
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193 s.__init__(self.items2)
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194 self.assertEqual(s, WeakSet(self.items2))
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195 self.assertRaises(TypeError, s.__init__, s, 2);
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196 self.assertRaises(TypeError, s.__init__, 1);
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197
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198 def test_constructor_identity(self):
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199 s = WeakSet(self.items)
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200 t = WeakSet(s)
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201 self.assertNotEqual(id(s), id(t))
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202
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203 def test_hash(self):
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204 self.assertRaises(TypeError, hash, self.s)
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205
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206 def test_clear(self):
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207 self.s.clear()
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208 self.assertEqual(self.s, WeakSet([]))
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209 self.assertEqual(len(self.s), 0)
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210
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211 def test_copy(self):
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212 dup = self.s.copy()
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213 self.assertEqual(self.s, dup)
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214 self.assertNotEqual(id(self.s), id(dup))
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215
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216 def test_add(self):
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217 x = ustr('Q')
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218 self.s.add(x)
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219 self.assertIn(x, self.s)
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220 dup = self.s.copy()
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221 self.s.add(x)
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222 self.assertEqual(self.s, dup)
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223 self.assertRaises(TypeError, self.s.add, [])
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224 self.fs.add(Foo())
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225 self.assertTrue(len(self.fs) == 1)
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226 self.fs.add(self.obj)
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227 self.assertTrue(len(self.fs) == 1)
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228
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229 def test_remove(self):
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230 x = ustr('a')
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231 self.s.remove(x)
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232 self.assertNotIn(x, self.s)
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233 self.assertRaises(KeyError, self.s.remove, x)
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234 self.assertRaises(TypeError, self.s.remove, [])
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235
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236 def test_discard(self):
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237 a, q = ustr('a'), ustr('Q')
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238 self.s.discard(a)
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239 self.assertNotIn(a, self.s)
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240 self.s.discard(q)
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241 self.assertRaises(TypeError, self.s.discard, [])
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242
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243 def test_pop(self):
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244 for i in range(len(self.s)):
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245 elem = self.s.pop()
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246 self.assertNotIn(elem, self.s)
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247 self.assertRaises(KeyError, self.s.pop)
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248
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249 def test_update(self):
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250 retval = self.s.update(self.items2)
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251 self.assertEqual(retval, None)
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252 for c in (self.items + self.items2):
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253 self.assertIn(c, self.s)
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254 self.assertRaises(TypeError, self.s.update, [[]])
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255
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256 def test_update_set(self):
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257 self.s.update(set(self.items2))
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258 for c in (self.items + self.items2):
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259 self.assertIn(c, self.s)
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260
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261 def test_ior(self):
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262 self.s |= set(self.items2)
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263 for c in (self.items + self.items2):
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264 self.assertIn(c, self.s)
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265
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266 def test_intersection_update(self):
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267 retval = self.s.intersection_update(self.items2)
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268 self.assertEqual(retval, None)
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269 for c in (self.items + self.items2):
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270 if c in self.items2 and c in self.items:
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271 self.assertIn(c, self.s)
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272 else:
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273 self.assertNotIn(c, self.s)
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274 self.assertRaises(TypeError, self.s.intersection_update, [[]])
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275
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276 def test_iand(self):
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277 self.s &= set(self.items2)
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278 for c in (self.items + self.items2):
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279 if c in self.items2 and c in self.items:
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280 self.assertIn(c, self.s)
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281 else:
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282 self.assertNotIn(c, self.s)
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283
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284 def test_difference_update(self):
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285 retval = self.s.difference_update(self.items2)
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286 self.assertEqual(retval, None)
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287 for c in (self.items + self.items2):
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288 if c in self.items and c not in self.items2:
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289 self.assertIn(c, self.s)
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290 else:
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291 self.assertNotIn(c, self.s)
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292 self.assertRaises(TypeError, self.s.difference_update, [[]])
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293 self.assertRaises(TypeError, self.s.symmetric_difference_update, [[]])
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294
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295 def test_isub(self):
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296 self.s -= set(self.items2)
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297 for c in (self.items + self.items2):
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298 if c in self.items and c not in self.items2:
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299 self.assertIn(c, self.s)
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300 else:
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301 self.assertNotIn(c, self.s)
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302
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303 def test_symmetric_difference_update(self):
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304 retval = self.s.symmetric_difference_update(self.items2)
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305 self.assertEqual(retval, None)
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306 for c in (self.items + self.items2):
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307 if (c in self.items) ^ (c in self.items2):
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308 self.assertIn(c, self.s)
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309 else:
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310 self.assertNotIn(c, self.s)
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311 self.assertRaises(TypeError, self.s.symmetric_difference_update, [[]])
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312
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313 def test_ixor(self):
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314 self.s ^= set(self.items2)
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315 for c in (self.items + self.items2):
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316 if (c in self.items) ^ (c in self.items2):
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317 self.assertIn(c, self.s)
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318 else:
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319 self.assertNotIn(c, self.s)
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320
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321 def test_inplace_on_self(self):
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322 t = self.s.copy()
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323 t |= t
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324 self.assertEqual(t, self.s)
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325 t &= t
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326 self.assertEqual(t, self.s)
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327 t -= t
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328 self.assertEqual(t, WeakSet())
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329 t = self.s.copy()
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330 t ^= t
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331 self.assertEqual(t, WeakSet())
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332
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333 def test_eq(self):
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334 # issue 5964
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335 self.assertTrue(self.s == self.s)
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336 self.assertTrue(self.s == WeakSet(self.items))
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337 self.assertFalse(self.s == set(self.items))
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338 self.assertFalse(self.s == list(self.items))
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339 self.assertFalse(self.s == tuple(self.items))
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340 self.assertFalse(self.s == WeakSet([Foo]))
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341 self.assertFalse(self.s == 1)
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342
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343 def test_weak_destroy_while_iterating(self):
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344 # Issue #7105: iterators shouldn't crash when a key is implicitly removed
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345 # Create new items to be sure no-one else holds a reference
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346 items = [ustr(c) for c in ('a', 'b', 'c')]
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347 s = WeakSet(items)
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348 it = iter(s)
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349 next(it) # Trigger internal iteration
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350 # Destroy an item
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351 del items[-1]
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352 gc.collect() # just in case
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353 # We have removed either the first consumed items, or another one
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354 self.assertIn(len(list(it)), [len(items), len(items) - 1])
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355 del it
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356 # The removal has been committed
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357 self.assertEqual(len(s), len(items))
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358
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359 def test_weak_destroy_and_mutate_while_iterating(self):
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360 # Issue #7105: iterators shouldn't crash when a key is implicitly removed
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361 items = [ustr(c) for c in string.ascii_letters]
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362 s = WeakSet(items)
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363 @contextlib.contextmanager
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364 def testcontext():
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365 try:
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366 it = iter(s)
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367 next(it)
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368 del it
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369 # Schedule an item for removal and recreate it
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370 u = ustr(str(items.pop()))
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371 gc.collect() # just in case
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372 yield u
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373 finally:
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374 it = None # should commit all removals
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375
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376 with testcontext() as u:
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377 self.assertNotIn(u, s)
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378 with testcontext() as u:
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379 self.assertRaises(KeyError, s.remove, u)
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380 self.assertNotIn(u, s)
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381 with testcontext() as u:
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382 s.add(u)
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383 self.assertIn(u, s)
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384 t = s.copy()
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385 with testcontext() as u:
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386 s.update(t)
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387 self.assertEqual(len(s), len(t))
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388 with testcontext() as u:
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389 s.clear()
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390 self.assertEqual(len(s), 0)
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391
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392 def test_len_cycles(self):
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393 N = 20
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394 items = [RefCycle() for i in range(N)]
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395 s = WeakSet(items)
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396 del items
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397 it = iter(s)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
398 try:
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
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399 next(it)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
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400 except StopIteration:
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
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401 pass
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
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402 gc.collect()
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
403 n1 = len(s)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
404 del it
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
405 gc.collect()
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
406 n2 = len(s)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
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407 # one item may be kept alive inside the iterator
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
408 self.assertIn(n1, (0, 1))
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
409 self.assertEqual(n2, 0)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
410
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
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411 def test_len_race(self):
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
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412 # Extended sanity checks for len() in the face of cyclic collection
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
413 self.addCleanup(gc.set_threshold, *gc.get_threshold())
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
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414 for th in range(1, 100):
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
415 N = 20
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
416 gc.collect(0)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
417 gc.set_threshold(th, th, th)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
418 items = [RefCycle() for i in range(N)]
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
419 s = WeakSet(items)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
420 del items
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
421 # All items will be collected at next garbage collection pass
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
422 it = iter(s)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
423 try:
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
424 next(it)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
425 except StopIteration:
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
426 pass
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
427 n1 = len(s)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
428 del it
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
429 n2 = len(s)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
430 self.assertGreaterEqual(n1, 0)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
431 self.assertLessEqual(n1, N)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
432 self.assertGreaterEqual(n2, 0)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
433 self.assertLessEqual(n2, n1)
1cd0688ff004 Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, WeakValueDictionary) to return a better approximation when some objects are dead or dying.
Antoine Pitrou <solipsis@pitrou.net>
parents: 75095
diff changeset
434
47159
37499287f758 Add a test suite for WeakSet mostly derived from test_set and fix some
Georg Brandl <georg@python.org>
parents:
diff changeset
435
37499287f758 Add a test suite for WeakSet mostly derived from test_set and fix some
Georg Brandl <georg@python.org>
parents:
diff changeset
436 def test_main(verbose=None):
47201
9c930a32cebb #2621 rename test.test_support to test.support
Benjamin Peterson <benjamin@python.org>
parents: 47166
diff changeset
437 support.run_unittest(TestWeakSet)
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37499287f758 Add a test suite for WeakSet mostly derived from test_set and fix some
Georg Brandl <georg@python.org>
parents:
diff changeset
438
37499287f758 Add a test suite for WeakSet mostly derived from test_set and fix some
Georg Brandl <georg@python.org>
parents:
diff changeset
439 if __name__ == "__main__":
37499287f758 Add a test suite for WeakSet mostly derived from test_set and fix some
Georg Brandl <georg@python.org>
parents:
diff changeset
440 test_main(verbose=True)