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49c522be80
Many of these tests are redundant, but this will ensure that the mapping protocols all stay in sync. Also, added a test for dictionary subclasses.
417 lines
12 KiB
Python
417 lines
12 KiB
Python
import unittest
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from test import test_support
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import sys, UserDict, cStringIO
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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.assert_(dict() is not {})
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def test_bool(self):
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self.assert_(not {})
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self.assert_({1: 2})
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self.assert_(bool({}) is False)
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self.assert_(bool({1: 2}) is 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.assert_(d.has_key('a'))
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self.assert_(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.assert_(not 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.assert_(not ('a' in d))
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self.assert_('a' not in d)
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d = {'a': 1, 'b': 2}
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self.assert_('a' in d)
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self.assert_('b' in d)
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self.assert_('c' not in 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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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.assert_(not(d.fromkeys('abc') is 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.assert_(type(dictlike.fromkeys('a')) is dictlike)
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self.assert_(type(dictlike().fromkeys('a')) is 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.assert_(isinstance(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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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.assert_(d.get('c') is 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.assert_(d.get('c') is 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.assert_(d.setdefault('key0') is None)
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d.setdefault('key0', [])
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self.assert_(d.setdefault('key0') is 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_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.assert_(not(copymode < 0 and ta != tb))
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self.assert_(not a)
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self.assert_(not 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 (for 64-bit archs)
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# 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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d = {}
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d[1] = 1
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try:
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for i in d:
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d[i+1] = 1
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except RuntimeError:
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pass
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else:
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self.fail("changing dict size during iteration doesn't raise Error")
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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_le(self):
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self.assert_(not ({} < {}))
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self.assert_(not ({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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d1 = {BadCmp(): 1}
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d2 = {1: 1}
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try:
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d1 < d2
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except Exc:
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pass
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else:
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self.fail("< didn't raise Exc")
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import mapping_tests
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class GeneralMappingTests(mapping_tests.BasicTestMappingProtocol):
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type2test = dict
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class Dict(dict):
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pass
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class SubclassMappingTests(mapping_tests.BasicTestMappingProtocol):
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type2test = Dict
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def test_main():
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test_support.run_unittest(
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DictTest,
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GeneralMappingTests,
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SubclassMappingTests,
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)
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if __name__ == "__main__":
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test_main()
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