import collections.abc
import copy
import pickle
import unittest
from test.support import get_c_recursion_limit
class DictSetTest(unittest.TestCase):
def test_constructors_not_callable(self):
kt = type({}.keys())
self.assertRaises(TypeError, kt, {})
self.assertRaises(TypeError, kt)
it = type({}.items())
self.assertRaises(TypeError, it, {})
self.assertRaises(TypeError, it)
vt = type({}.values())
self.assertRaises(TypeError, vt, {})
self.assertRaises(TypeError, vt)
def test_dict_keys(self):
d = {1: 10, "a": "ABC"}
keys = d.keys()
self.assertEqual(len(keys), 2)
self.assertEqual(set(keys), {1, "a"})
self.assertEqual(keys, {1, "a"})
self.assertNotEqual(keys, {1, "a", "b"})
self.assertNotEqual(keys, {1, "b"})
self.assertNotEqual(keys, {1})
self.assertNotEqual(keys, 42)
self.assertIn(1, keys)
self.assertIn("a", keys)
self.assertNotIn(10, keys)
self.assertNotIn("Z", keys)
self.assertEqual(d.keys(), d.keys())
e = {1: 11, "a": "def"}
self.assertEqual(d.keys(), e.keys())
del e["a"]
self.assertNotEqual(d.keys(), e.keys())
def test_dict_items(self):
d = {1: 10, "a": "ABC"}
items = d.items()
self.assertEqual(len(items), 2)
self.assertEqual(set(items), {(1, 10), ("a", "ABC")})
self.assertEqual(items, {(1, 10), ("a", "ABC")})
self.assertNotEqual(items, {(1, 10), ("a", "ABC"), "junk"})
self.assertNotEqual(items, {(1, 10), ("a", "def")})
self.assertNotEqual(items, {(1, 10)})
self.assertNotEqual(items, 42)
self.assertIn((1, 10), items)
self.assertIn(("a", "ABC"), items)
self.assertNotIn((1, 11), items)
self.assertNotIn(1, items)
self.assertNotIn((), items)
self.assertNotIn((1,), items)
self.assertNotIn((1, 2, 3), items)
self.assertEqual(d.items(), d.items())
e = d.copy()
self.assertEqual(d.items(), e.items())
e["a"] = "def"
self.assertNotEqual(d.items(), e.items())
def test_dict_mixed_keys_items(self):
d = {(1, 1): 11, (2, 2): 22}
e = {1: 1, 2: 2}
self.assertEqual(d.keys(), e.items())
self.assertNotEqual(d.items(), e.keys())
def test_dict_values(self):
d = {1: 10, "a": "ABC"}
values = d.values()
self.assertEqual(set(values), {10, "ABC"})
self.assertEqual(len(values), 2)
def test_dict_repr(self):
d = {1: 10, "a": "ABC"}
self.assertIsInstance(repr(d), str)
r = repr(d.items())
self.assertIsInstance(r, str)
self.assertTrue(r == "dict_items([('a', 'ABC'), (1, 10)])" or
r == "dict_items([(1, 10), ('a', 'ABC')])")
r = repr(d.keys())
self.assertIsInstance(r, str)
self.assertTrue(r == "dict_keys(['a', 1])" or
r == "dict_keys([1, 'a'])")
r = repr(d.values())
self.assertIsInstance(r, str)
self.assertTrue(r == "dict_values(['ABC', 10])" or
r == "dict_values([10, 'ABC'])")
def test_keys_set_operations(self):
d1 = {'a': 1, 'b': 2}
d2 = {'b': 3, 'c': 2}
d3 = {'d': 4, 'e': 5}
d4 = {'d': 4}
class CustomSet(set):
def intersection(self, other):
return CustomSet(super().intersection(other))
self.assertEqual(d1.keys() & d1.keys(), {'a', 'b'})
self.assertEqual(d1.keys() & d2.keys(), {'b'})
self.assertEqual(d1.keys() & d3.keys(), set())
self.assertEqual(d1.keys() & set(d1.keys()), {'a', 'b'})
self.assertEqual(d1.keys() & set(d2.keys()), {'b'})
self.assertEqual(d1.keys() & set(d3.keys()), set())
self.assertEqual(d1.keys() & tuple(d1.keys()), {'a', 'b'})
self.assertEqual(d3.keys() & d4.keys(), {'d'})
self.assertEqual(d4.keys() & d3.keys(), {'d'})
self.assertEqual(d4.keys() & set(d3.keys()), {'d'})
self.assertIsInstance(d4.keys() & frozenset(d3.keys()), set)
self.assertIsInstance(frozenset(d3.keys()) & d4.keys(), set)
self.assertIs(type(d4.keys() & CustomSet(d3.keys())), set)
self.assertIs(type(d1.keys() & []), set)
self.assertIs(type([] & d1.keys()), set)
self.assertEqual(d1.keys() | d1.keys(), {'a', 'b'})
self.assertEqual(d1.keys() | d2.keys(), {'a', 'b', 'c'})
self.assertEqual(d1.keys() | d3.keys(), {'a', 'b', 'd', 'e'})
self.assertEqual(d1.keys() | set(d1.keys()), {'a', 'b'})
self.assertEqual(d1.keys() | set(d2.keys()), {'a', 'b', 'c'})
self.assertEqual(d1.keys() | set(d3.keys()),
{'a', 'b', 'd', 'e'})
self.assertEqual(d1.keys() | (1, 2), {'a', 'b', 1, 2})
self.assertEqual(d1.keys() ^ d1.keys(), set())
self.assertEqual(d1.keys() ^ d2.keys(), {'a', 'c'})
self.assertEqual(d1.keys() ^ d3.keys(), {'a', 'b', 'd', 'e'})
self.assertEqual(d1.keys() ^ set(d1.keys()), set())
self.assertEqual(d1.keys() ^ set(d2.keys()), {'a', 'c'})
self.assertEqual(d1.keys() ^ set(d3.keys()),
{'a', 'b', 'd', 'e'})
self.assertEqual(d1.keys() ^ tuple(d2.keys()), {'a', 'c'})
self.assertEqual(d1.keys() - d1.keys(), set())
self.assertEqual(d1.keys() - d2.keys(), {'a'})
self.assertEqual(d1.keys() - d3.keys(), {'a', 'b'})
self.assertEqual(d1.keys() - set(d1.keys()), set())
self.assertEqual(d1.keys() - set(d2.keys()), {'a'})
self.assertEqual(d1.keys() - set(d3.keys()), {'a', 'b'})
self.assertEqual(d1.keys() - (0, 1), {'a', 'b'})
self.assertFalse(d1.keys().isdisjoint(d1.keys()))
self.assertFalse(d1.keys().isdisjoint(d2.keys()))
self.assertFalse(d1.keys().isdisjoint(list(d2.keys())))
self.assertFalse(d1.keys().isdisjoint(set(d2.keys())))
self.assertTrue(d1.keys().isdisjoint({'x', 'y', 'z'}))
self.assertTrue(d1.keys().isdisjoint(['x', 'y', 'z']))
self.assertTrue(d1.keys().isdisjoint(set(['x', 'y', 'z'])))
self.assertTrue(d1.keys().isdisjoint(set(['x', 'y'])))
self.assertTrue(d1.keys().isdisjoint(['x', 'y']))
self.assertTrue(d1.keys().isdisjoint({}))
self.assertTrue(d1.keys().isdisjoint(d3.keys()))
de = {}
self.assertTrue(de.keys().isdisjoint(set()))
self.assertTrue(de.keys().isdisjoint([]))
self.assertTrue(de.keys().isdisjoint(de.keys()))
self.assertTrue(de.keys().isdisjoint([1]))
def test_items_set_operations(self):
d1 = {'a': 1, 'b': 2}
d2 = {'a': 2, 'b': 2}
d3 = {'d': 4, 'e': 5}
self.assertEqual(
d1.items() & d1.items(), {('a', 1), ('b', 2)})
self.assertEqual(d1.items() & d2.items(), {('b', 2)})
self.assertEqual(d1.items() & d3.items(), set())
self.assertEqual(d1.items() & set(d1.items()),
{('a', 1), ('b', 2)})
self.assertEqual(d1.items() & set(d2.items()), {('b', 2)})
self.assertEqual(d1.items() & set(d3.items()), set())
self.assertEqual(d1.items() & (("a", 1), ("b", 2)),
{('a', 1), ('b', 2)})
self.assertEqual(d1.items() & (("a", 2), ("b", 2)), {('b', 2)})
self.assertEqual(d1.items() & (("d", 4), ("e", 5)), set())
self.assertEqual(d1.items() | d1.items(),
{('a', 1), ('b', 2)})
self.assertEqual(d1.items() | d2.items(),
{('a', 1), ('a', 2), ('b', 2)})
self.assertEqual(d1.items() | d3.items(),
{('a', 1), ('b', 2), ('d', 4), ('e', 5)})
self.assertEqual(d1.items() | set(d1.items()),
{('a', 1), ('b', 2)})
self.assertEqual(d1.items() | set(d2.items()),
{('a', 1), ('a', 2), ('b', 2)})
self.assertEqual(d1.items() | set(d3.items()),
{('a', 1), ('b', 2), ('d', 4), ('e', 5)})
self.assertEqual(d1.items() | (('a', 1), ('b', 2)),
{('a', 1), ('b', 2)})
self.assertEqual(d1.items() | (('a', 2), ('b', 2)),
{('a', 1), ('a', 2), ('b', 2)})
self.assertEqual(d1.items() | (('d', 4), ('e', 5)),
{('a', 1), ('b', 2), ('d', 4), ('e', 5)})
self.assertEqual(d1.items() ^ d1.items(), set())
self.assertEqual(d1.items() ^ d2.items(),
{('a', 1), ('a', 2)})
self.assertEqual(d1.items() ^ d3.items(),
{('a', 1), ('b', 2), ('d', 4), ('e', 5)})
self.assertEqual(d1.items() ^ (('a', 1), ('b', 2)), set())
self.assertEqual(d1.items() ^ (("a", 2), ("b", 2)),
{('a', 1), ('a', 2)})
self.assertEqual(d1.items() ^ (("d", 4), ("e", 5)),
{('a', 1), ('b', 2), ('d', 4), ('e', 5)})
self.assertEqual(d1.items() - d1.items(), set())
self.assertEqual(d1.items() - d2.items(), {('a', 1)})
self.assertEqual(d1.items() - d3.items(), {('a', 1), ('b', 2)})
self.assertEqual(d1.items() - set(d1.items()), set())
self.assertEqual(d1.items() - set(d2.items()), {('a', 1)})
self.assertEqual(d1.items() - set(d3.items()), {('a', 1), ('b', 2)})
self.assertEqual(d1.items() - (('a', 1), ('b', 2)), set())
self.assertEqual(d1.items() - (("a", 2), ("b", 2)), {('a', 1)})
self.assertEqual(d1.items() - (("d", 4), ("e", 5)), {('a', 1), ('b', 2)})
self.assertFalse(d1.items().isdisjoint(d1.items()))
self.assertFalse(d1.items().isdisjoint(d2.items()))
self.assertFalse(d1.items().isdisjoint(list(d2.items())))
self.assertFalse(d1.items().isdisjoint(set(d2.items())))
self.assertTrue(d1.items().isdisjoint({'x', 'y', 'z'}))
self.assertTrue(d1.items().isdisjoint(['x', 'y', 'z']))
self.assertTrue(d1.items().isdisjoint(set(['x', 'y', 'z'])))
self.assertTrue(d1.items().isdisjoint(set(['x', 'y'])))
self.assertTrue(d1.items().isdisjoint({}))
self.assertTrue(d1.items().isdisjoint(d3.items()))
de = {}
self.assertTrue(de.items().isdisjoint(set()))
self.assertTrue(de.items().isdisjoint([]))
self.assertTrue(de.items().isdisjoint(de.items()))
self.assertTrue(de.items().isdisjoint([1]))
def test_set_operations_with_iterator(self):
origin = {1: 2, 3: 4}
self.assertEqual(origin.keys() & iter([1, 2]), {1})
self.assertEqual(origin.keys() | iter([1, 2]), {1, 2, 3})
self.assertEqual(origin.keys() ^ iter([1, 2]), {2, 3})
self.assertEqual(origin.keys() - iter([1, 2]), {3})
items = origin.items()
self.assertEqual(items & iter([(1, 2)]), {(1, 2)})
self.assertEqual(items ^ iter([(1, 2)]), {(3, 4)})
self.assertEqual(items | iter([(1, 2)]), {(1, 2), (3, 4)})
self.assertEqual(items - iter([(1, 2)]), {(3, 4)})
def test_set_operations_with_noniterable(self):
with self.assertRaises(TypeError):
{}.keys() & 1
with self.assertRaises(TypeError):
{}.keys() | 1
with self.assertRaises(TypeError):
{}.keys() ^ 1
with self.assertRaises(TypeError):
{}.keys() - 1
with self.assertRaises(TypeError):
{}.items() & 1
with self.assertRaises(TypeError):
{}.items() | 1
with self.assertRaises(TypeError):
{}.items() ^ 1
with self.assertRaises(TypeError):
{}.items() - 1
def test_recursive_repr(self):
d = {}
d[42] = d.values()
r = repr(d)
# Cannot perform a stronger test, as the contents of the repr
# are implementation-dependent. All we can say is that we
# want a str result, not an exception of any sort.
self.assertIsInstance(r, str)
d[42] = d.items()
r = repr(d)
# Again.
self.assertIsInstance(r, str)
def test_deeply_nested_repr(self):
d = {}
for i in range(get_c_recursion_limit()//2 + 100):
d = {42: d.values()}
self.assertRaises(RecursionError, repr, d)
def test_copy(self):
d = {1: 10, "a": "ABC"}
self.assertRaises(TypeError, copy.copy, d.keys())
self.assertRaises(TypeError, copy.copy, d.values())
self.assertRaises(TypeError, copy.copy, d.items())
def test_compare_error(self):
class Exc(Exception):
pass
class BadEq:
def __hash__(self):
return 7
def __eq__(self, other):
raise Exc
k1, k2 = BadEq(), BadEq()
v1, v2 = BadEq(), BadEq()
d = {k1: v1}
self.assertIn(k1, d)
self.assertIn(k1, d.keys())
self.assertIn(v1, d.values())
self.assertIn((k1, v1), d.items())
self.assertRaises(Exc, d.__contains__, k2)
self.assertRaises(Exc, d.keys().__contains__, k2)
self.assertRaises(Exc, d.items().__contains__, (k2, v1))
self.assertRaises(Exc, d.items().__contains__, (k1, v2))
with self.assertRaises(Exc):
v2 in d.values()
def test_pickle(self):
d = {1: 10, "a": "ABC"}
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
self.assertRaises((TypeError, pickle.PicklingError),
pickle.dumps, d.keys(), proto)
self.assertRaises((TypeError, pickle.PicklingError),
pickle.dumps, d.values(), proto)
self.assertRaises((TypeError, pickle.PicklingError),
pickle.dumps, d.items(), proto)
def test_abc_registry(self):
d = dict(a=1)
self.assertIsInstance(d.keys(), collections.abc.KeysView)
self.assertIsInstance(d.keys(), collections.abc.MappingView)
self.assertIsInstance(d.keys(), collections.abc.Set)
self.assertIsInstance(d.keys(), collections.abc.Sized)
self.assertIsInstance(d.keys(), collections.abc.Iterable)
self.assertIsInstance(d.keys(), collections.abc.Container)
self.assertIsInstance(d.values(), collections.abc.ValuesView)
self.assertIsInstance(d.values(), collections.abc.MappingView)
self.assertIsInstance(d.values(), collections.abc.Sized)
self.assertIsInstance(d.values(), collections.abc.Collection)
self.assertIsInstance(d.values(), collections.abc.Iterable)
self.assertIsInstance(d.values(), collections.abc.Container)
self.assertIsInstance(d.items(), collections.abc.ItemsView)
self.assertIsInstance(d.items(), collections.abc.MappingView)
self.assertIsInstance(d.items(), collections.abc.Set)
self.assertIsInstance(d.items(), collections.abc.Sized)
self.assertIsInstance(d.items(), collections.abc.Iterable)
self.assertIsInstance(d.items(), collections.abc.Container)
if __name__ == "__main__":
unittest.main()
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