def test_values(self):
d = dict()
self.assertEqual(d.values(), [])
d = dict({1:2})
self.assertEqual(d.values(), [2])
self.assertRaises(TypeError, d.values, None)
def test_popitem(self):
# dict.popitem()
for copymode in -1, +1:
# -1: b has same structure as a
# +1: b is a.copy()
for log2size in range(12):
size = 2**log2size
a = dict()
b = dict()
for i in range(size):
a[repr(i)] = i
if copymode < 0:
b[repr(i)] = i
if copymode > 0:
b = a.copy()
for i in range(size):
ka, va = ta = a.popitem()
self.assertEqual(va, int(ka))
kb, vb = tb = b.popitem()
self.assertEqual(vb, int(kb))
self.assertFalse(copymode < 0 and ta != tb)
self.assertFalse(a)
self.assertFalse(b)
d = dict()
self.assertRaises(KeyError, d.popitem)
def test_items(self):
d = dict()
self.assertEqual(d.items(), [])
d = dict({1:2})
self.assertEqual(d.items(), [(1, 2)])
self.assertRaises(TypeError, d.items, None)
def test_fromkeys(self):
self.assertEqual(dict.fromkeys('abc'), {'a':None, 'b':None, 'c':None})
d = dict()
self.assertIsNot(d.fromkeys('abc'), d)
self.assertEqual(d.fromkeys('abc'), {'a':None, 'b':None, 'c':None})
self.assertEqual(d.fromkeys((4,5),0), {4:0, 5:0})
self.assertEqual(d.fromkeys([]), {})
def g():
yield 1
self.assertEqual(d.fromkeys(g()), {1:None})
self.assertRaises(TypeError, dict().fromkeys, 3)
class dictlike(dict): pass
self.assertEqual(dictlike.fromkeys('a'), {'a':None})
self.assertEqual(dictlike().fromkeys('a'), {'a':None})
self.assertIsInstance(dictlike.fromkeys('a'), dictlike)
self.assertIsInstance(dictlike().fromkeys('a'), dictlike)
# class mydict(dict):
# def __new__(cls):
# return UserDict.UserDict()
# ud = mydict.fromkeys('ab')
# self.assertEqual(ud, {'a':None, 'b':None})
# self.assertIsInstance(ud, UserDict.UserDict)
# self.assertRaises(TypeError, dict.fromkeys)
class Exc(Exception): pass
class baddict1(dict):
def __init__(self):
raise Exc()
self.assertRaises(Exc, baddict1.fromkeys, [1])
@implements_iterator
class BadSeq(object):
def __iter__(self):
return self
def __next__(self):
raise Exc()
self.assertRaises(Exc, dict.fromkeys, BadSeq())
class baddict2(dict):
def __setitem__(self, key, value):
raise Exc()
self.assertRaises(Exc, baddict2.fromkeys, [1])
# test fast path for dictionary inputs
d = dict(zip(range(6), range(6)))
self.assertEqual(dict.fromkeys(d, 0), dict(zip(range(6), [0]*6)))
class baddict3(dict):
def __new__(cls):
return d
d = dict((i, i) for i in range(10))
res = d.copy()
res.update(a=None, b=None, c=None)
def test_has_key(self):
d = dict()
self.assertFalse(d.has_key('a'))
d = dict({'a': 1, 'b': 2})
k = d.keys()
k.sort()
self.assertEqual(k, ['a', 'b'])
self.assertRaises(TypeError, d.has_key)
def test_keys(self):
d = dict()
self.assertEqual(d.keys(), [])
d = dict({'a': 1, 'b': 2})
k = d.keys()
self.assertTrue(d.has_key('a'))
self.assertTrue(d.has_key('b'))
self.assertRaises(TypeError, d.keys, None)
def test_dict_keys(self):
"""
The keys, values and items methods should now return lists on
Python 3.x.
"""
d = self.d1
self.assertEqual(set(dict(d)), set(d))
self.assertEqual(set(dict(d).keys()), set(d.keys()))
keys = dict(d).keys()
assert isinstance(keys, list)
key0 = keys[0]
def test_contains(self):
d = dict()
self.assertNotIn('a', d)
self.assertFalse('a' in d)
self.assertTrue('a' not in d)
d = dict({'a': 1, 'b': 2})
self.assertIn('a', d)
self.assertIn('b', d)
self.assertNotIn('c', d)
self.assertRaises(TypeError, d.__contains__)
def test_get(self):
d = dict()
self.assertIs(d.get('c'), None)
self.assertEqual(d.get('c', 3), 3)
d = dict({'a': 1, 'b': 2})
self.assertIs(d.get('c'), None)
self.assertEqual(d.get('c', 3), 3)
self.assertEqual(d.get('a'), 1)
self.assertEqual(d.get('a', 3), 1)
self.assertRaises(TypeError, d.get)
self.assertRaises(TypeError, d.get, None, None, None)
def test_set_like_behaviour(self):
d1, d2 = self.d1, self.d2
self.assertEqual(dict(d1).viewkeys() & dict(d2).viewkeys(), set())
self.assertEqual(dict(d1).viewkeys() | dict(d2).viewkeys(),
set(['key1', 'key2', 'C', 'B', 'A']))
self.assertTrue(isinstance(d1.viewvalues() | d2.viewkeys(), set))
self.assertTrue(isinstance(d1.viewitems() | d2.viewitems(), set))
with self.assertRaises(TypeError):
d1.values() | d2.values()
d1.keys() | d2.keys()
d1.items() | d2.items()
def test_setdefault(self):
# dict.setdefault()
d = dict()
self.assertIs(d.setdefault('key0'), None)
d.setdefault('key0', [])
self.assertIs(d.setdefault('key0'), None)
d.setdefault('key', []).append(3)
self.assertEqual(d['key'][0], 3)
d.setdefault('key', []).append(4)
self.assertEqual(len(d['key']), 2)
self.assertRaises(TypeError, d.setdefault)
class Exc(Exception): pass
class BadHash(object):
fail = False
def __hash__(self):
if self.fail:
raise Exc()
else:
return 42
x = BadHash()
d[x] = 42
x.fail = True
self.assertRaises(Exc, d.setdefault, x, [])
def test_mutatingiteration(self):
# changing dict size during iteration
d = dict()
d[1] = 1
with self.assertRaises(RuntimeError):
for i in d:
d[i+1] = 1
def test_pop(self):
# Tests for pop with specified key
d = dict()
k, v = 'abc', 'def'
d[k] = v
self.assertRaises(KeyError, d.pop, 'ghi')
self.assertEqual(d.pop(k), v)
self.assertEqual(len(d), 0)
self.assertRaises(KeyError, d.pop, k)
self.assertEqual(d.pop(k, v), v)
d[k] = v
self.assertEqual(d.pop(k, 1), v)
self.assertRaises(TypeError, d.pop)
class Exc(Exception): pass
class BadHash(object):
fail = False
def __hash__(self):
if self.fail:
raise Exc()
else:
return 42
x = BadHash()
d[x] = 42
x.fail = True
self.assertRaises(Exc, d.pop, x)
def test_dict_getitem(self):
d = dict({'C': 1, 'B': 2, 'A': 3})
self.assertEqual(d['C'], 1)
self.assertEqual(d['B'], 2)
self.assertEqual(d['A'], 3)
with self.assertRaises(KeyError):
self.assertEqual(d['D'])
def test_repr(self):
d = dict()
self.assertEqual(repr(d), '{}')
d[1] = 2
self.assertEqual(repr(d), '{1: 2}')
d = dict()
d[1] = d
self.assertEqual(repr(d), '{1: {...}}')
class Exc(Exception): pass
class BadRepr(object):
def __repr__(self):
raise Exc()
d = dict({1: BadRepr()})
self.assertRaises(Exc, repr, d)
def test_literal_constructor(self):
# check literal constructor for different sized dicts
# (to exercise the BUILD_MAP oparg).
for n in (0, 1, 6, 256, 400):
items = [(''.join(random.sample(string.ascii_letters, 8)), i)
for i in range(n)]
random.shuffle(items)
formatted_items = ('{!r}: {:d}'.format(k, v) for k, v in items)
dictliteral = '{' + ', '.join(formatted_items) + '}'
self.assertEqual(eval(dictliteral), dict(items))
def test_getitem(self):
d = dict({'a': 1, 'b': 2})
self.assertEqual(d['a'], 1)
self.assertEqual(d['b'], 2)
d['c'] = 3
d['a'] = 4
self.assertEqual(d['c'], 3)
self.assertEqual(d['a'], 4)
del d['b']
self.assertEqual(d, dict({'a': 4, 'c': 3}))
self.assertRaises(TypeError, d.__getitem__)
class BadEq(object):
def __eq__(self, other):
raise Exc()
def __hash__(self):
return 24
d = dict()
d[BadEq()] = 42
self.assertRaises(KeyError, d.__getitem__, 23)
class Exc(Exception): pass
class BadHash(object):
fail = False
def __hash__(self):
if self.fail:
raise Exc()
else:
return 42
x = BadHash()
d[x] = 42
x.fail = True
self.assertRaises(Exc, d.__getitem__, x)
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,))
def test_setdefault_atomic(self):
# Issue #13521: setdefault() calls __hash__ and __eq__ only once.
class Hashed(object):
def __init__(self):
self.hash_count = 0
self.eq_count = 0
def __hash__(self):
self.hash_count += 1
return 42
def __eq__(self, other):
self.eq_count += 1
return id(self) == id(other)
hashed1 = Hashed()
y = dict({hashed1: 5})
hashed2 = Hashed()
y.setdefault(hashed2, [])
self.assertEqual(hashed1.hash_count, 1)
if PY3:
self.assertEqual(hashed2.hash_count, 1)
self.assertEqual(hashed1.eq_count + hashed2.eq_count, 1)
def test_le(self):
self.assertFalse(dict() < {})
self.assertFalse(dict() < dict())
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
def test_le(self):
self.assertFalse(dict() < {})
self.assertFalse(dict() < dict())
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
def setUp(self):
self.d1 = dict({'C': 1, 'B': 2, 'A': 3})
self.d2 = dict(key1='value1', key2='value2')
def test_len(self):
d = dict()
self.assertEqual(len(d), 0)
d = dict({'a': 1, 'b': 2})
self.assertEqual(len(d), 2)
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_dict_items(self):
d = self.d1
self.assertEqual(set(dict(d).items()), set(d.items()))
items = dict(d).items()
assert isinstance(items, list)
item0 = items[0]
def test_dict_eq(self):
d = self.d1
self.assertEqual(dict(d), d)
def test_dict_values(self):
d = self.d1
self.assertEqual(set(dict(d).values()), set(d.values()))
values = dict(d).values()
assert isinstance(values, list)
val0 = values[0]
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_update(self):
d = dict()
d.update({1:100})
d.update(dict({2:20}))
d.update({1:1, 2:2, 3:3})
self.assertEqual(d, {1:1, 2:2, 3:3})
d.update()
self.assertEqual(d, {1:1, 2:2, 3:3})
self.assertRaises((TypeError, AttributeError), d.update, None)
class SimpleUserDict:
def __init__(self):
self.d = dict({1:1, 2:2, 3:3})
def keys(self):
return self.d.keys()
def __getitem__(self, i):
return self.d[i]
d.clear()
d.update(SimpleUserDict())
self.assertEqual(d, {1:1, 2:2, 3:3})
class Exc(Exception): pass
d.clear()
class FailingUserDict:
def keys(self):
raise Exc
self.assertRaises(Exc, d.update, FailingUserDict())
class FailingUserDict:
def keys(self):
@implements_iterator
class BogonIter:
def __init__(self):
self.i = 1
def __iter__(self):
return self
def __next__(self):
if self.i:
self.i = 0
return 'a'
raise Exc
return BogonIter()
def __getitem__(self, key):
return key
self.assertRaises(Exc, d.update, FailingUserDict())
class FailingUserDict:
def keys(self):
@implements_iterator
class BogonIter:
def __init__(self):
self.i = ord('a')
def __iter__(self):
return self
def __next__(self):
if self.i <= ord('z'):
rtn = chr(self.i)
self.i += 1
return rtn
raise StopIteration
return BogonIter()
def __getitem__(self, key):
raise Exc
self.assertRaises(Exc, d.update, FailingUserDict())
@implements_iterator
class badseq(object):
def __iter__(self):
return self
def __next__(self):
raise Exc()
self.assertRaises(Exc, {}.update, badseq())
self.assertRaises(ValueError, {}.update, [(1, 2, 3)])
def test_update(self):
d = dict()
d.update({1:100})
d.update(dict({2:20}))
d.update({1:1, 2:2, 3:3})
self.assertEqual(d, {1:1, 2:2, 3:3})
d.update()
self.assertEqual(d, {1:1, 2:2, 3:3})
self.assertRaises((TypeError, AttributeError), d.update, None)
class SimpleUserDict:
def __init__(self):
self.d = dict({1:1, 2:2, 3:3})
def keys(self):
return self.d.keys()
def __getitem__(self, i):
return self.d[i]
d.clear()
d.update(SimpleUserDict())
self.assertEqual(d, {1:1, 2:2, 3:3})
class Exc(Exception): pass
d.clear()
class FailingUserDict:
def keys(self):
raise Exc
self.assertRaises(Exc, d.update, FailingUserDict())
class FailingUserDict:
def keys(self):
@implements_iterator
class BogonIter:
def __init__(self):
self.i = 1
def __iter__(self):
return self
def __next__(self):
if self.i:
self.i = 0
return 'a'
raise Exc
return BogonIter()
def __getitem__(self, key):
return key
self.assertRaises(Exc, d.update, FailingUserDict())
class FailingUserDict:
def keys(self):
@implements_iterator
class BogonIter:
def __init__(self):
self.i = ord('a')
def __iter__(self):
return self
def __next__(self):
if self.i <= ord('z'):
rtn = chr(self.i)
self.i += 1
return rtn
raise StopIteration
return BogonIter()
def __getitem__(self, key):
raise Exc
self.assertRaises(Exc, d.update, FailingUserDict())
@implements_iterator
class badseq(object):
def __iter__(self):
return self
def __next__(self):
raise Exc()
self.assertRaises(Exc, {}.update, badseq())
self.assertRaises(ValueError, {}.update, [(1, 2, 3)])
def test_clear(self):
d = dict({1:1, 2:2, 3:3})
d.clear()
self.assertEqual(d, {})
self.assertRaises(TypeError, d.clear, None)
def __init__(self):
self.d = dict({1:1, 2:2, 3:3})
def test_dict_eq(self):
d = self.d1
self.assertEqual(dict(d), d)
def test_copy(self):
d = dict({1:1, 2:2, 3:3})
self.assertEqual(d.copy(), {1:1, 2:2, 3:3})
self.assertEqual({}.copy(), {})
self.assertRaises(TypeError, d.copy, None)
def test_dict_empty(self):
"""
dict() -> {}
"""
self.assertEqual(dict(), {})
def test_methods_produce_lists(self):
for d in (dict(self.d1), self.d2):
assert isinstance(d.keys(), list)
assert isinstance(d.values(), list)
assert isinstance(d.items(), list)
def test_clear(self):
d = dict({1:1, 2:2, 3:3})
d.clear()
self.assertEqual(d, {})
self.assertRaises(TypeError, d.clear, None)
def test_dict_empty(self):
"""
dict() -> {}
"""
self.assertEqual(dict(), {})
def __init__(self):
self.d = dict({1:1, 2:2, 3:3})
def test_fromkeys(self):
self.assertEqual(dict.fromkeys('abc'), {
'a': None,
'b': None,
'c': None
})
d = dict()
self.assertIsNot(d.fromkeys('abc'), d)
self.assertEqual(d.fromkeys('abc'), {'a': None, 'b': None, 'c': None})
self.assertEqual(d.fromkeys((4, 5), 0), {4: 0, 5: 0})
self.assertEqual(d.fromkeys([]), {})
def g():
yield 1
self.assertEqual(d.fromkeys(g()), {1: None})
self.assertRaises(TypeError, dict().fromkeys, 3)
class dictlike(dict):
pass
self.assertEqual(dictlike.fromkeys('a'), {'a': None})
self.assertEqual(dictlike().fromkeys('a'), {'a': None})
self.assertIsInstance(dictlike.fromkeys('a'), dictlike)
self.assertIsInstance(dictlike().fromkeys('a'), dictlike)
# class mydict(dict):
# def __new__(cls):
# return UserDict.UserDict()
# ud = mydict.fromkeys('ab')
# self.assertEqual(ud, {'a':None, 'b':None})
# self.assertIsInstance(ud, UserDict.UserDict)
# self.assertRaises(TypeError, dict.fromkeys)
class Exc(Exception):
pass
class baddict1(dict):
def __init__(self):
raise Exc()
self.assertRaises(Exc, baddict1.fromkeys, [1])
@implements_iterator
class BadSeq(object):
def __iter__(self):
return self
def __next__(self):
raise Exc()
self.assertRaises(Exc, dict.fromkeys, BadSeq())
class baddict2(dict):
def __setitem__(self, key, value):
raise Exc()
self.assertRaises(Exc, baddict2.fromkeys, [1])
# test fast path for dictionary inputs
d = dict(zip(range(6), range(6)))
self.assertEqual(dict.fromkeys(d, 0), dict(zip(range(6), [0] * 6)))
class baddict3(dict):
def __new__(cls):
return d
d = dict((i, i) for i in range(10))
res = d.copy()
res.update(a=None, b=None, c=None)
def test_copy(self):
d = dict({1:1, 2:2, 3:3})
self.assertEqual(d.copy(), {1:1, 2:2, 3:3})
self.assertEqual({}.copy(), {})
self.assertRaises(TypeError, d.copy, None)
def test_constructor(self):
# calling built-in types without argument must return empty
self.assertEqual(dict(), {})
self.assertIsNot(dict(), {})
def test_dict_items(self):
d = self.d1
self.assertEqual(set(dict(d).items()), set(d.items()))
items = dict(d).items()
assert isinstance(items, list)
item0 = items[0]
def test_bool(self):
self.assertIs(not dict(), True)
self.assertTrue(dict({1: 2}))
self.assertIs(bool(dict({})), False)
self.assertIs(bool(dict({1: 2})), True)
def test_methods_produce_lists(self):
for d in (dict(self.d1), self.d2):
assert isinstance(d.keys(), list)
assert isinstance(d.values(), list)
assert isinstance(d.items(), list)
def test_dict_values(self):
d = self.d1
self.assertEqual(set(dict(d).values()), set(d.values()))
values = dict(d).values()
assert isinstance(values, list)
val0 = values[0]
