814 lines
24 KiB
Python
814 lines
24 KiB
Python
import unittest
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from test import test_support
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import UserDict, random, string
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import gc, weakref
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import sys
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class DictTest(unittest.TestCase):
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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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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.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 {}, True)
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self.assertTrue({1: 2})
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self.assertIs(bool({}), False)
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self.assertIs(bool({1: 2}), True)
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def test_keys(self):
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d = {}
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self.assertEqual(d.keys(), [])
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d = {'a': 1, 'b': 2}
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k = d.keys()
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self.assertEqual(set(k), {'a', 'b'})
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self.assertIn('a', k)
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self.assertIn('b', k)
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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 = {}
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self.assertEqual(d.values(), [])
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d = {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 = {}
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self.assertEqual(d.items(), [])
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d = {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 = {}
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self.assertFalse(d.has_key('a'))
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d = {'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 = {}
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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 = {'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 = {}
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self.assertEqual(len(d), 0)
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d = {'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 = {'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, {'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 = {}
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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 = {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 = {}
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d.update({1:100})
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d.update({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 = {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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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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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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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 = {}
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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, {}.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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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 = {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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self.assertEqual(baddict3.fromkeys({"a", "b", "c"}), res)
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def test_copy(self):
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d = {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 = {}
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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 = {'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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def test_setdefault(self):
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# dict.setdefault()
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d = {}
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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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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 = {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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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 = {}
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b = {}
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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 = {}
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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 = {}
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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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# verify longs/ints get same value when key > 32 bits
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# (for 64-bit archs). See SF bug #689659.
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x = 4503599627370496L
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y = 4503599627370496
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h = {x: 'anything', y: 'something else'}
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self.assertEqual(h[x], h[y])
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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 = {}
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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 = {}
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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 = {}
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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 = {1: BadRepr()}
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self.assertRaises(Exc, repr, d)
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def test_repr_deep(self):
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d = {}
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for i in range(sys.getrecursionlimit() + 100):
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d = {1: d}
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self.assertRaises(RuntimeError, repr, d)
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def test_le(self):
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self.assertFalse({} < {})
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self.assertFalse({1: 2} < {1L: 2L})
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class Exc(Exception): pass
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class BadCmp(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 42
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d1 = {BadCmp(): 1}
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d2 = {1: 1}
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with self.assertRaises(Exc):
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d1 < d2
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def test_missing(self):
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# Make sure dict doesn't have a __missing__ method
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self.assertFalse(hasattr(dict, "__missing__"))
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self.assertFalse(hasattr({}, "__missing__"))
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# Test several cases:
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# (D) subclass defines __missing__ method returning a value
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# (E) subclass defines __missing__ method raising RuntimeError
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# (F) subclass sets __missing__ instance variable (no effect)
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# (G) subclass doesn't define __missing__ at all
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class D(dict):
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def __missing__(self, key):
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return 42
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d = D({1: 2, 3: 4})
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self.assertEqual(d[1], 2)
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self.assertEqual(d[3], 4)
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self.assertNotIn(2, d)
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self.assertNotIn(2, d.keys())
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self.assertEqual(d[2], 42)
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class E(dict):
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def __missing__(self, key):
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raise RuntimeError(key)
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e = E()
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with self.assertRaises(RuntimeError) as c:
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e[42]
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self.assertEqual(c.exception.args, (42,))
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class F(dict):
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def __init__(self):
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# An instance variable __missing__ should have no effect
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self.__missing__ = lambda key: None
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f = F()
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with self.assertRaises(KeyError) as c:
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f[42]
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self.assertEqual(c.exception.args, (42,))
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class G(dict):
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pass
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g = G()
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with self.assertRaises(KeyError) as c:
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g[42]
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self.assertEqual(c.exception.args, (42,))
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def test_tuple_keyerror(self):
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# SF #1576657
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d = {}
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with self.assertRaises(KeyError) as c:
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d[(1,)]
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self.assertEqual(c.exception.args, ((1,),))
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def test_bad_key(self):
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# Dictionary lookups should fail if __cmp__() raises an exception.
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class CustomException(Exception):
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pass
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class BadDictKey:
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def __hash__(self):
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return hash(self.__class__)
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def __cmp__(self, other):
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if isinstance(other, self.__class__):
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raise CustomException
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return other
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d = {}
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x1 = BadDictKey()
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x2 = BadDictKey()
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d[x1] = 1
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for stmt in ['d[x2] = 2',
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'z = d[x2]',
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'x2 in d',
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'd.has_key(x2)',
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'd.get(x2)',
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'd.setdefault(x2, 42)',
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'd.pop(x2)',
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'd.update({x2: 2})']:
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with self.assertRaises(CustomException):
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exec stmt in locals()
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def test_resize1(self):
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# Dict resizing bug, found by Jack Jansen in 2.2 CVS development.
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# This version got an assert failure in debug build, infinite loop in
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# release build. Unfortunately, provoking this kind of stuff requires
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# a mix of inserts and deletes hitting exactly the right hash codes in
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# exactly the right order, and I can't think of a randomized approach
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# that would be *likely* to hit a failing case in reasonable time.
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|
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())
|
|
|
|
|
|
def test_free_after_iterating(self):
|
|
test_support.check_free_after_iterating(self, iter, dict)
|
|
test_support.check_free_after_iterating(self, lambda d: d.iterkeys(), dict)
|
|
test_support.check_free_after_iterating(self, lambda d: d.itervalues(), dict)
|
|
test_support.check_free_after_iterating(self, lambda d: d.iteritems(), dict)
|
|
test_support.check_free_after_iterating(self, lambda d: iter(d.viewkeys()), dict)
|
|
test_support.check_free_after_iterating(self, lambda d: iter(d.viewvalues()), dict)
|
|
test_support.check_free_after_iterating(self, lambda d: iter(d.viewitems()), dict)
|
|
|
|
def test_equal_operator_modifying_operand(self):
|
|
# test fix for seg fault reported in issue 27945 part 3.
|
|
class X(object):
|
|
def __del__(self):
|
|
dict_b.clear()
|
|
|
|
def __eq__(self, other):
|
|
dict_a.clear()
|
|
return True
|
|
|
|
def __hash__(self):
|
|
return 13
|
|
|
|
dict_a = {X(): 0}
|
|
dict_b = {X(): X()}
|
|
self.assertTrue(dict_a == dict_b)
|
|
|
|
def test_fromkeys_operator_modifying_dict_operand(self):
|
|
# test fix for seg fault reported in issue 27945 part 4a.
|
|
class X(int):
|
|
def __hash__(self):
|
|
return 13
|
|
|
|
def __eq__(self, other):
|
|
if len(d) > 1:
|
|
d.clear()
|
|
return False
|
|
|
|
d = {} # this is required to exist so that d can be constructed!
|
|
d = {X(1): 1, X(2): 2}
|
|
try:
|
|
dict.fromkeys(d) # shouldn't crash
|
|
except RuntimeError: # implementation defined
|
|
pass
|
|
|
|
def test_fromkeys_operator_modifying_set_operand(self):
|
|
# test fix for seg fault reported in issue 27945 part 4b.
|
|
class X(int):
|
|
def __hash__(self):
|
|
return 13
|
|
|
|
def __eq__(self, other):
|
|
if len(d) > 1:
|
|
d.clear()
|
|
return False
|
|
|
|
d = {} # this is required to exist so that d can be constructed!
|
|
d = {X(1), X(2)}
|
|
try:
|
|
dict.fromkeys(d) # shouldn't crash
|
|
except RuntimeError: # implementation defined
|
|
pass
|
|
|
|
def test_dictitems_contains_use_after_free(self):
|
|
class X(object):
|
|
def __eq__(self, other):
|
|
d.clear()
|
|
return NotImplemented
|
|
|
|
__hash__ = object.__hash__ # silence Py3k warning
|
|
|
|
d = {0: set()}
|
|
try:
|
|
(0, X()) in d.iteritems() # shouldn't crash
|
|
except RuntimeError: # implementation defined
|
|
pass
|
|
|
|
def test_init_use_after_free(self):
|
|
class X(object):
|
|
def __hash__(self):
|
|
pair[:] = []
|
|
return 13
|
|
|
|
pair = [X(), 123]
|
|
dict([pair])
|
|
|
|
def test_oob_indexing_dictiter_iternextitem(self):
|
|
class X(int):
|
|
def __del__(self):
|
|
d.clear()
|
|
|
|
d = {i: X(i) for i in range(8)}
|
|
|
|
def iter_and_mutate():
|
|
for result in d.iteritems():
|
|
if result[0] == 2:
|
|
d[2] = None # free d[2] --> X(2).__del__ was called
|
|
|
|
self.assertRaises(RuntimeError, iter_and_mutate)
|
|
|
|
|
|
from test import mapping_tests
|
|
|
|
class GeneralMappingTests(mapping_tests.BasicTestMappingProtocol):
|
|
type2test = dict
|
|
|
|
class Dict(dict):
|
|
pass
|
|
|
|
class SubclassMappingTests(mapping_tests.BasicTestMappingProtocol):
|
|
type2test = Dict
|
|
|
|
def test_main():
|
|
with test_support.check_py3k_warnings(
|
|
('dict(.has_key..| inequality comparisons) not supported in 3.x',
|
|
DeprecationWarning)):
|
|
test_support.run_unittest(
|
|
DictTest,
|
|
GeneralMappingTests,
|
|
SubclassMappingTests,
|
|
)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|