792 lines
24 KiB
Python
792 lines
24 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Tests for the resurrected Py2-like class:`dict` type.
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"""
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from __future__ import absolute_import, unicode_literals, print_function
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import os
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import sys
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from future.utils import implements_iterator, PY3
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from future.tests.base import unittest, skip26
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from past.builtins import dict
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class TestOldDict(unittest.TestCase):
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def setUp(self):
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self.d1 = dict({'C': 1, 'B': 2, 'A': 3})
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self.d2 = dict(key1='value1', key2='value2')
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def test_dict_empty(self):
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"""
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dict() -> {}
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"""
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self.assertEqual(dict(), {})
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def test_dict_eq(self):
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d = self.d1
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self.assertEqual(dict(d), d)
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def test_dict_keys(self):
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"""
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The keys, values and items methods should now return lists on
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Python 3.x.
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"""
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d = self.d1
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self.assertEqual(set(dict(d)), set(d))
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self.assertEqual(set(dict(d).keys()), set(d.keys()))
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keys = dict(d).keys()
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assert isinstance(keys, list)
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key0 = keys[0]
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def test_dict_values(self):
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d = self.d1
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self.assertEqual(set(dict(d).values()), set(d.values()))
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values = dict(d).values()
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assert isinstance(values, list)
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val0 = values[0]
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def test_dict_items(self):
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d = self.d1
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self.assertEqual(set(dict(d).items()), set(d.items()))
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items = dict(d).items()
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assert isinstance(items, list)
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item0 = items[0]
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def test_isinstance_dict(self):
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self.assertTrue(isinstance(self.d1, dict))
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def test_dict_getitem(self):
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d = dict({'C': 1, 'B': 2, 'A': 3})
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self.assertEqual(d['C'], 1)
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self.assertEqual(d['B'], 2)
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self.assertEqual(d['A'], 3)
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with self.assertRaises(KeyError):
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self.assertEqual(d['D'])
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def test_methods_produce_lists(self):
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for d in (dict(self.d1), self.d2):
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assert isinstance(d.keys(), list)
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assert isinstance(d.values(), list)
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assert isinstance(d.items(), list)
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@unittest.skipIf(sys.version_info[:2] == (2, 6),
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'set-like behaviour of dict methods is only available in Py2.7+')
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def test_set_like_behaviour(self):
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d1, d2 = self.d1, self.d2
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self.assertEqual(dict(d1).viewkeys() & dict(d2).viewkeys(), set())
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self.assertEqual(dict(d1).viewkeys() | dict(d2).viewkeys(),
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set(['key1', 'key2', 'C', 'B', 'A']))
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self.assertTrue(isinstance(d1.viewvalues() | d2.viewkeys(), set))
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self.assertTrue(isinstance(d1.viewitems() | d2.viewitems(), set))
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with self.assertRaises(TypeError):
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d1.values() | d2.values()
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d1.keys() | d2.keys()
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d1.items() | d2.items()
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def test_braces_create_newdict_object(self):
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"""
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It would nice if the {} dict syntax could be coaxed
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into producing our new dict objects somehow ...
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"""
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d = self.d1
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if False: # This doesn't work ...
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self.assertTrue(type(d) == dict)
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# import UserDict
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import random, string
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import gc, weakref
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class Py2DictTest(unittest.TestCase):
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"""
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These are Py2/3-compatible ports of the unit tests from Python 2.7's
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tests/test_dict.py
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"""
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def test_constructor(self):
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# calling built-in types without argument must return empty
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self.assertEqual(dict(), {})
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self.assertIsNot(dict(), {})
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@skip26
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def test_literal_constructor(self):
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# check literal constructor for different sized dicts
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# (to exercise the BUILD_MAP oparg).
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for n in (0, 1, 6, 256, 400):
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items = [(''.join(random.sample(string.ascii_letters, 8)), i)
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for i in range(n)]
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random.shuffle(items)
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formatted_items = ('{!r}: {:d}'.format(k, v) for k, v in items)
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dictliteral = '{' + ', '.join(formatted_items) + '}'
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self.assertEqual(eval(dictliteral), dict(items))
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def test_bool(self):
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self.assertIs(not dict(), True)
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self.assertTrue(dict({1: 2}))
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self.assertIs(bool(dict({})), False)
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self.assertIs(bool(dict({1: 2})), True)
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def test_keys(self):
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d = dict()
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self.assertEqual(d.keys(), [])
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d = dict({'a': 1, 'b': 2})
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k = d.keys()
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self.assertTrue(d.has_key('a'))
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self.assertTrue(d.has_key('b'))
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self.assertRaises(TypeError, d.keys, None)
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def test_values(self):
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d = dict()
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self.assertEqual(d.values(), [])
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d = dict({1:2})
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self.assertEqual(d.values(), [2])
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self.assertRaises(TypeError, d.values, None)
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def test_items(self):
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d = dict()
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self.assertEqual(d.items(), [])
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d = dict({1:2})
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self.assertEqual(d.items(), [(1, 2)])
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self.assertRaises(TypeError, d.items, None)
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def test_has_key(self):
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d = dict()
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self.assertFalse(d.has_key('a'))
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d = dict({'a': 1, 'b': 2})
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k = d.keys()
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k.sort()
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self.assertEqual(k, ['a', 'b'])
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self.assertRaises(TypeError, d.has_key)
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def test_contains(self):
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d = dict()
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self.assertNotIn('a', d)
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self.assertFalse('a' in d)
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self.assertTrue('a' not in d)
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d = dict({'a': 1, 'b': 2})
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self.assertIn('a', d)
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self.assertIn('b', d)
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self.assertNotIn('c', d)
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self.assertRaises(TypeError, d.__contains__)
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def test_len(self):
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d = dict()
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self.assertEqual(len(d), 0)
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d = dict({'a': 1, 'b': 2})
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self.assertEqual(len(d), 2)
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def test_getitem(self):
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d = dict({'a': 1, 'b': 2})
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self.assertEqual(d['a'], 1)
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self.assertEqual(d['b'], 2)
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d['c'] = 3
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d['a'] = 4
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self.assertEqual(d['c'], 3)
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self.assertEqual(d['a'], 4)
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del d['b']
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self.assertEqual(d, dict({'a': 4, 'c': 3}))
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self.assertRaises(TypeError, d.__getitem__)
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class BadEq(object):
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def __eq__(self, other):
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raise Exc()
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def __hash__(self):
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return 24
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d = dict()
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d[BadEq()] = 42
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self.assertRaises(KeyError, d.__getitem__, 23)
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class Exc(Exception): pass
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class BadHash(object):
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fail = False
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def __hash__(self):
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if self.fail:
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raise Exc()
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else:
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return 42
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x = BadHash()
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d[x] = 42
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x.fail = True
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self.assertRaises(Exc, d.__getitem__, x)
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def test_clear(self):
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d = dict({1:1, 2:2, 3:3})
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d.clear()
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self.assertEqual(d, {})
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self.assertRaises(TypeError, d.clear, None)
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def test_update(self):
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d = dict()
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d.update({1:100})
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d.update(dict({2:20}))
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d.update({1:1, 2:2, 3:3})
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self.assertEqual(d, {1:1, 2:2, 3:3})
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d.update()
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self.assertEqual(d, {1:1, 2:2, 3:3})
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self.assertRaises((TypeError, AttributeError), d.update, None)
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class SimpleUserDict:
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def __init__(self):
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self.d = dict({1:1, 2:2, 3:3})
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def keys(self):
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return self.d.keys()
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def __getitem__(self, i):
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return self.d[i]
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d.clear()
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d.update(SimpleUserDict())
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self.assertEqual(d, {1:1, 2:2, 3:3})
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class Exc(Exception): pass
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d.clear()
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class FailingUserDict:
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def keys(self):
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raise Exc
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self.assertRaises(Exc, d.update, FailingUserDict())
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class FailingUserDict:
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def keys(self):
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@implements_iterator
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class BogonIter:
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def __init__(self):
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self.i = 1
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def __iter__(self):
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return self
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def __next__(self):
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if self.i:
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self.i = 0
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return 'a'
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raise Exc
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return BogonIter()
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def __getitem__(self, key):
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return key
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self.assertRaises(Exc, d.update, FailingUserDict())
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class FailingUserDict:
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def keys(self):
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@implements_iterator
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class BogonIter:
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def __init__(self):
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self.i = ord('a')
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def __iter__(self):
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return self
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def __next__(self):
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if self.i <= ord('z'):
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rtn = chr(self.i)
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self.i += 1
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return rtn
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raise StopIteration
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return BogonIter()
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def __getitem__(self, key):
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raise Exc
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self.assertRaises(Exc, d.update, FailingUserDict())
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@implements_iterator
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class badseq(object):
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def __iter__(self):
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return self
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def __next__(self):
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raise Exc()
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self.assertRaises(Exc, {}.update, badseq())
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self.assertRaises(ValueError, {}.update, [(1, 2, 3)])
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def test_fromkeys(self):
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self.assertEqual(dict.fromkeys('abc'), {'a':None, 'b':None, 'c':None})
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d = dict()
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self.assertIsNot(d.fromkeys('abc'), d)
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self.assertEqual(d.fromkeys('abc'), {'a':None, 'b':None, 'c':None})
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self.assertEqual(d.fromkeys((4,5),0), {4:0, 5:0})
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self.assertEqual(d.fromkeys([]), {})
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def g():
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yield 1
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self.assertEqual(d.fromkeys(g()), {1:None})
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self.assertRaises(TypeError, dict().fromkeys, 3)
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class dictlike(dict): pass
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self.assertEqual(dictlike.fromkeys('a'), {'a':None})
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self.assertEqual(dictlike().fromkeys('a'), {'a':None})
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self.assertIsInstance(dictlike.fromkeys('a'), dictlike)
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self.assertIsInstance(dictlike().fromkeys('a'), dictlike)
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# class mydict(dict):
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# def __new__(cls):
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# return UserDict.UserDict()
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# ud = mydict.fromkeys('ab')
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# self.assertEqual(ud, {'a':None, 'b':None})
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# self.assertIsInstance(ud, UserDict.UserDict)
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# self.assertRaises(TypeError, dict.fromkeys)
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class Exc(Exception): pass
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class baddict1(dict):
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def __init__(self):
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raise Exc()
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self.assertRaises(Exc, baddict1.fromkeys, [1])
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@implements_iterator
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class BadSeq(object):
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def __iter__(self):
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return self
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def __next__(self):
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raise Exc()
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self.assertRaises(Exc, dict.fromkeys, BadSeq())
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class baddict2(dict):
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def __setitem__(self, key, value):
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raise Exc()
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self.assertRaises(Exc, baddict2.fromkeys, [1])
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# test fast path for dictionary inputs
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d = dict(zip(range(6), range(6)))
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self.assertEqual(dict.fromkeys(d, 0), dict(zip(range(6), [0]*6)))
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class baddict3(dict):
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def __new__(cls):
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return d
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d = dict((i, i) for i in range(10))
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res = d.copy()
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res.update(a=None, b=None, c=None)
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# Was: self.assertEqual(baddict3.fromkeys(set(["a", "b", "c"])), res)
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# Infinite loop on Python 2.6 and 2.7 ...
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def test_copy(self):
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d = dict({1:1, 2:2, 3:3})
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self.assertEqual(d.copy(), {1:1, 2:2, 3:3})
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self.assertEqual({}.copy(), {})
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self.assertRaises(TypeError, d.copy, None)
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def test_get(self):
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d = dict()
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self.assertIs(d.get('c'), None)
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self.assertEqual(d.get('c', 3), 3)
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d = dict({'a': 1, 'b': 2})
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self.assertIs(d.get('c'), None)
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self.assertEqual(d.get('c', 3), 3)
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self.assertEqual(d.get('a'), 1)
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self.assertEqual(d.get('a', 3), 1)
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self.assertRaises(TypeError, d.get)
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self.assertRaises(TypeError, d.get, None, None, None)
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@skip26
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def test_setdefault(self):
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# dict.setdefault()
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d = dict()
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self.assertIs(d.setdefault('key0'), None)
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d.setdefault('key0', [])
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self.assertIs(d.setdefault('key0'), None)
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d.setdefault('key', []).append(3)
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self.assertEqual(d['key'][0], 3)
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d.setdefault('key', []).append(4)
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self.assertEqual(len(d['key']), 2)
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self.assertRaises(TypeError, d.setdefault)
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class Exc(Exception): pass
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class BadHash(object):
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fail = False
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def __hash__(self):
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if self.fail:
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raise Exc()
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else:
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return 42
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x = BadHash()
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d[x] = 42
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x.fail = True
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self.assertRaises(Exc, d.setdefault, x, [])
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@skip26
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def test_setdefault_atomic(self):
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# Issue #13521: setdefault() calls __hash__ and __eq__ only once.
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class Hashed(object):
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def __init__(self):
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self.hash_count = 0
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self.eq_count = 0
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def __hash__(self):
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self.hash_count += 1
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return 42
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def __eq__(self, other):
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self.eq_count += 1
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return id(self) == id(other)
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hashed1 = Hashed()
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y = dict({hashed1: 5})
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hashed2 = Hashed()
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y.setdefault(hashed2, [])
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self.assertEqual(hashed1.hash_count, 1)
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if PY3:
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self.assertEqual(hashed2.hash_count, 1)
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self.assertEqual(hashed1.eq_count + hashed2.eq_count, 1)
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def test_popitem(self):
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# dict.popitem()
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for copymode in -1, +1:
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# -1: b has same structure as a
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# +1: b is a.copy()
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for log2size in range(12):
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size = 2**log2size
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a = dict()
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b = dict()
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for i in range(size):
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a[repr(i)] = i
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if copymode < 0:
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b[repr(i)] = i
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if copymode > 0:
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b = a.copy()
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for i in range(size):
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ka, va = ta = a.popitem()
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self.assertEqual(va, int(ka))
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kb, vb = tb = b.popitem()
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self.assertEqual(vb, int(kb))
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self.assertFalse(copymode < 0 and ta != tb)
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self.assertFalse(a)
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self.assertFalse(b)
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d = dict()
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self.assertRaises(KeyError, d.popitem)
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def test_pop(self):
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# Tests for pop with specified key
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d = dict()
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k, v = 'abc', 'def'
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d[k] = v
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self.assertRaises(KeyError, d.pop, 'ghi')
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self.assertEqual(d.pop(k), v)
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self.assertEqual(len(d), 0)
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self.assertRaises(KeyError, d.pop, k)
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self.assertEqual(d.pop(k, v), v)
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d[k] = v
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self.assertEqual(d.pop(k, 1), v)
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self.assertRaises(TypeError, d.pop)
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class Exc(Exception): pass
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class BadHash(object):
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fail = False
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def __hash__(self):
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if self.fail:
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raise Exc()
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else:
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return 42
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x = BadHash()
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d[x] = 42
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x.fail = True
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self.assertRaises(Exc, d.pop, x)
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def test_mutatingiteration(self):
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# changing dict size during iteration
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d = dict()
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d[1] = 1
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with self.assertRaises(RuntimeError):
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for i in d:
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d[i+1] = 1
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def test_repr(self):
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d = dict()
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self.assertEqual(repr(d), '{}')
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d[1] = 2
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self.assertEqual(repr(d), '{1: 2}')
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d = dict()
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d[1] = d
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self.assertEqual(repr(d), '{1: {...}}')
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class Exc(Exception): pass
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class BadRepr(object):
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def __repr__(self):
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raise Exc()
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d = dict({1: BadRepr()})
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self.assertRaises(Exc, repr, d)
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@unittest.skip('Comparing dicts for order has not been forward-ported')
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def test_le(self):
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self.assertFalse(dict() < {})
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self.assertFalse(dict() < dict())
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self.assertFalse(dict({1: 2}) < {1: 2})
|
|
|
|
class Exc(Exception): pass
|
|
|
|
class BadCmp(object):
|
|
def __eq__(self, other):
|
|
raise Exc()
|
|
def __hash__(self):
|
|
return 42
|
|
|
|
d1 = dict({BadCmp(): 1})
|
|
d2 = dict({1: 1})
|
|
|
|
with self.assertRaises(Exc):
|
|
d1 < d2
|
|
|
|
@skip26
|
|
def test_missing(self):
|
|
# Make sure dict doesn't have a __missing__ method
|
|
self.assertFalse(hasattr(dict, "__missing__"))
|
|
self.assertFalse(hasattr(dict(), "__missing__"))
|
|
# Test several cases:
|
|
# (D) subclass defines __missing__ method returning a value
|
|
# (E) subclass defines __missing__ method raising RuntimeError
|
|
# (F) subclass sets __missing__ instance variable (no effect)
|
|
# (G) subclass doesn't define __missing__ at a all
|
|
class D(dict):
|
|
def __missing__(self, key):
|
|
return 42
|
|
d = D({1: 2, 3: 4})
|
|
self.assertEqual(d[1], 2)
|
|
self.assertEqual(d[3], 4)
|
|
self.assertNotIn(2, d)
|
|
self.assertNotIn(2, d.keys())
|
|
self.assertEqual(d[2], 42)
|
|
|
|
class E(dict):
|
|
def __missing__(self, key):
|
|
raise RuntimeError(key)
|
|
e = E()
|
|
with self.assertRaises(RuntimeError) as c:
|
|
e[42]
|
|
self.assertEqual(c.exception.args, (42,))
|
|
|
|
class F(dict):
|
|
def __init__(self):
|
|
# An instance variable __missing__ should have no effect
|
|
self.__missing__ = lambda key: None
|
|
f = F()
|
|
with self.assertRaises(KeyError) as c:
|
|
f[42]
|
|
self.assertEqual(c.exception.args, (42,))
|
|
|
|
class G(dict):
|
|
pass
|
|
g = G()
|
|
with self.assertRaises(KeyError) as c:
|
|
g[42]
|
|
self.assertEqual(c.exception.args, (42,))
|
|
|
|
@skip26
|
|
def test_tuple_keyerror(self):
|
|
# SF #1576657
|
|
d = dict()
|
|
with self.assertRaises(KeyError) as c:
|
|
d[(1,)]
|
|
self.assertEqual(c.exception.args, ((1,),))
|
|
|
|
# def test_bad_key(self):
|
|
# # Dictionary lookups should fail if __cmp__() raises an exception.
|
|
# class CustomException(Exception):
|
|
# pass
|
|
|
|
# class BadDictKey:
|
|
# def __hash__(self):
|
|
# return hash(self.__class__)
|
|
|
|
# def __cmp__(self, other):
|
|
# if isinstance(other, self.__class__):
|
|
# raise CustomException
|
|
# return other
|
|
|
|
# d = dict()
|
|
# x1 = BadDictKey()
|
|
# x2 = BadDictKey()
|
|
# d[x1] = 1
|
|
# for stmt in ['d[x2] = 2',
|
|
# 'z = d[x2]',
|
|
# 'x2 in d',
|
|
# 'd.has_key(x2)',
|
|
# 'd.get(x2)',
|
|
# 'd.setdefault(x2, 42)',
|
|
# 'd.pop(x2)',
|
|
# 'd.update({x2: 2})']:
|
|
# with self.assertRaises(CustomException):
|
|
# utils.exec_(stmt, locals())
|
|
#
|
|
# def test_resize1(self):
|
|
# # Dict resizing bug, found by Jack Jansen in 2.2 CVS development.
|
|
# # This version got an assert failure in debug build, infinite loop in
|
|
# # release build. Unfortunately, provoking this kind of stuff requires
|
|
# # a mix of inserts and deletes hitting exactly the right hash codes in
|
|
# # exactly the right order, and I can't think of a randomized approach
|
|
# # that would be *likely* to hit a failing case in reasonable time.
|
|
|
|
# d = {}
|
|
# for i in range(5):
|
|
# d[i] = i
|
|
# for i in range(5):
|
|
# del d[i]
|
|
# for i in range(5, 9): # i==8 was the problem
|
|
# d[i] = i
|
|
|
|
# def test_resize2(self):
|
|
# # Another dict resizing bug (SF bug #1456209).
|
|
# # This caused Segmentation faults or Illegal instructions.
|
|
|
|
# class X(object):
|
|
# def __hash__(self):
|
|
# return 5
|
|
# def __eq__(self, other):
|
|
# if resizing:
|
|
# d.clear()
|
|
# return False
|
|
# d = {}
|
|
# resizing = False
|
|
# d[X()] = 1
|
|
# d[X()] = 2
|
|
# d[X()] = 3
|
|
# d[X()] = 4
|
|
# d[X()] = 5
|
|
# # now trigger a resize
|
|
# resizing = True
|
|
# d[9] = 6
|
|
|
|
# def test_empty_presized_dict_in_freelist(self):
|
|
# # Bug #3537: if an empty but presized dict with a size larger
|
|
# # than 7 was in the freelist, it triggered an assertion failure
|
|
# with self.assertRaises(ZeroDivisionError):
|
|
# d = {'a': 1 // 0, 'b': None, 'c': None, 'd': None, 'e': None,
|
|
# 'f': None, 'g': None, 'h': None}
|
|
# d = {}
|
|
|
|
# def test_container_iterator(self):
|
|
# # Bug #3680: tp_traverse was not implemented for dictiter objects
|
|
# class C(object):
|
|
# pass
|
|
# iterators = (dict.iteritems, dict.itervalues, dict.iterkeys)
|
|
# for i in iterators:
|
|
# obj = C()
|
|
# ref = weakref.ref(obj)
|
|
# container = {obj: 1}
|
|
# obj.x = i(container)
|
|
# del obj, container
|
|
# gc.collect()
|
|
# self.assertIs(ref(), None, "Cycle was not collected")
|
|
|
|
# def _not_tracked(self, t):
|
|
# # Nested containers can take several collections to untrack
|
|
# gc.collect()
|
|
# gc.collect()
|
|
# self.assertFalse(gc.is_tracked(t), t)
|
|
|
|
# def _tracked(self, t):
|
|
# self.assertTrue(gc.is_tracked(t), t)
|
|
# gc.collect()
|
|
# gc.collect()
|
|
# self.assertTrue(gc.is_tracked(t), t)
|
|
|
|
# @test_support.cpython_only
|
|
# def test_track_literals(self):
|
|
# # Test GC-optimization of dict literals
|
|
# x, y, z, w = 1.5, "a", (1, None), []
|
|
|
|
# self._not_tracked({})
|
|
# self._not_tracked({x:(), y:x, z:1})
|
|
# self._not_tracked({1: "a", "b": 2})
|
|
# self._not_tracked({1: 2, (None, True, False, ()): int})
|
|
# self._not_tracked({1: object()})
|
|
|
|
# # Dicts with mutable elements are always tracked, even if those
|
|
# # elements are not tracked right now.
|
|
# self._tracked({1: []})
|
|
# self._tracked({1: ([],)})
|
|
# self._tracked({1: {}})
|
|
# self._tracked({1: set()})
|
|
|
|
# @test_support.cpython_only
|
|
# def test_track_dynamic(self):
|
|
# # Test GC-optimization of dynamically-created dicts
|
|
# class MyObject(object):
|
|
# pass
|
|
# x, y, z, w, o = 1.5, "a", (1, object()), [], MyObject()
|
|
|
|
# d = dict()
|
|
# self._not_tracked(d)
|
|
# d[1] = "a"
|
|
# self._not_tracked(d)
|
|
# d[y] = 2
|
|
# self._not_tracked(d)
|
|
# d[z] = 3
|
|
# self._not_tracked(d)
|
|
# self._not_tracked(d.copy())
|
|
# d[4] = w
|
|
# self._tracked(d)
|
|
# self._tracked(d.copy())
|
|
# d[4] = None
|
|
# self._not_tracked(d)
|
|
# self._not_tracked(d.copy())
|
|
|
|
# # dd isn't tracked right now, but it may mutate and therefore d
|
|
# # which contains it must be tracked.
|
|
# d = dict()
|
|
# dd = dict()
|
|
# d[1] = dd
|
|
# self._not_tracked(dd)
|
|
# self._tracked(d)
|
|
# dd[1] = d
|
|
# self._tracked(dd)
|
|
|
|
# d = dict.fromkeys([x, y, z])
|
|
# self._not_tracked(d)
|
|
# dd = dict()
|
|
# dd.update(d)
|
|
# self._not_tracked(dd)
|
|
# d = dict.fromkeys([x, y, z, o])
|
|
# self._tracked(d)
|
|
# dd = dict()
|
|
# dd.update(d)
|
|
# self._tracked(dd)
|
|
|
|
# d = dict(x=x, y=y, z=z)
|
|
# self._not_tracked(d)
|
|
# d = dict(x=x, y=y, z=z, w=w)
|
|
# self._tracked(d)
|
|
# d = dict()
|
|
# d.update(x=x, y=y, z=z)
|
|
# self._not_tracked(d)
|
|
# d.update(w=w)
|
|
# self._tracked(d)
|
|
|
|
# d = dict([(x, y), (z, 1)])
|
|
# self._not_tracked(d)
|
|
# d = dict([(x, y), (z, w)])
|
|
# self._tracked(d)
|
|
# d = dict()
|
|
# d.update([(x, y), (z, 1)])
|
|
# self._not_tracked(d)
|
|
# d.update([(x, y), (z, w)])
|
|
# self._tracked(d)
|
|
|
|
# @test_support.cpython_only
|
|
# def test_track_subtypes(self):
|
|
# # Dict subtypes are always tracked
|
|
# class MyDict(dict):
|
|
# pass
|
|
# self._tracked(MyDict())
|
|
|
|
|
|
if __name__ == '__main__':
|
|
# Only run these tests on Python 3 ...
|
|
if PY3:
|
|
unittest.main()
|